Commit Graph

1843 Commits

Author SHA1 Message Date
Ingo Weinhold
5f679d1cd3 Resize(): Added boolean "force" parameter that allows to force setting the
new memory, even if it isn't needed at that time.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35231 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-21 22:16:03 +00:00
Ingo Weinhold
453a2bdd18 Replaced the locking strategy (formerly a recursive lock for the depot and
one for each per CPU store):
* The depot is now protected by a R/W lock combined with a spinlock. It is
  required to either hold read lock + spinlock or just the write lock.
* When accessing the per CPU stores we only need to acquire the read lock
  and disable interrupts. When switching magazines with the depot we
  additionally get the spinlock.
* When allocating a new magazine we do completely unlock.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35200 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-20 13:00:57 +00:00
Ingo Weinhold
5662ae4585 Changed the team shutdown process a bit:
* The threads beside the main thread are killed earlier now (in the new
  team_shutdown_team()), before removing the team from the team hash and from
  its process group. This fixes #5296.
* Use a condition variable instead of a semaphore to wait for the non-main
  threads to die. We notify the condition right after a thread has left the
  team. The semaphore was released by the undertaker.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35196 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-20 09:34:53 +00:00
Ingo Weinhold
7dcd388aa6 Coding style fix.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35180 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 20:36:29 +00:00
Ingo Weinhold
825566f82f * Split the slab allocator code into separate source files and C++-ified
things a bit.
* Some style cleanup.
* The object depot does now have a cookie that will be passed to the return
  hook.
* Fixed object_cache_return_object_wrapper() using the new cookie.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35174 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 19:13:25 +00:00
Ingo Weinhold
0fc052b47d Moved the definition of the CACHE_ALIGN_ON_SIZE flag to the header and fixed
its value.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35163 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 10:17:16 +00:00
Ingo Weinhold
a8806e5e0d * Renamed headers/private/kernel/slab/Depot.h to ObjectDepot.h.
* Moved the object depot code to its own source file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35161 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 10:12:48 +00:00
Ingo Weinhold
6379e53e2d vm_page no longer points directly to its containing cache, but rather to a
VMCacheRef object which points to the cache. This allows to optimize
VMCache::MoveAllPages(), since it no longer needs to iterate over all pages
to adjust their cache pointer. It can simple swap the cache refs of the two
caches instead.

Reduces the total -j8 Haiku image build time only marginally. The kernel time
drops almost 10%, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35155 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 08:34:14 +00:00
Ingo Weinhold
3632eeedb9 * VMCache: Added a UserData attribute which can be used by the lock holder.
* Added "bool consumerLocked" parameter to VMCache::Unlock() and
  ReleaseRefAndUnlock(). Since Unlock() may cause the cache to be merged with
  a consumer cache, the flag is needed to prevent a deadlock in case the
  caller still holds a lock to the consumer. Hasn't been a problem yet, since
  that situation never occurred.
* VMCacheChainLocker: Reversed unlocking order to bottom-up. The other
  direction could cause a deadlock in case caches would be merged, since the
  locking order would be reversed. The way VMCacheChainLocker was used this
  didn't happen, though.
* fault_get_page(): While copying a page from a lower cache to the top cache,
  we do now unlock all caches but the top one, so we don't unnecessarily
  kill concurrency.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35153 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-19 03:02:11 +00:00
Ingo Weinhold
f082f7f019 * Added vm_page::accessed flag. Works analogously to vm_page::modified.
* Reorganized the code for [un]mapping pages:
  - Added new VMTranslationMap::Unmap{Area,Page[s]}() which essentially do what
    vm_unmap_page[s]() did before, just in the architecture specific code, which
    allows for specific optimizations. UnmapArea() is for the special case that
    the complete area is unmapped. Particularly in case the address space is
    deleted, some work can be saved. Several TODOs could be slain.
  - Since they are only used within vm.cpp vm_map_page() and vm_unmap_page[s]()
    are now static and have lost their prefix (and the "preserveModified"
    parameter).
* Added VMTranslationMap::Protect{Page,Area}(). They are just inline wrappers
  for Protect().
* X86VMTranslationMap::Protect(): Make sure not to accidentally clear the
  accessed/dirty flags.
* X86VMTranslationMap::Unmap()/Protect(): Make page table skipping actually
  work. It was only skipping to the next page.
* Adjusted the PPC code to at least compile.

No measurable effect for the -j8 Haiku image build time, though the kernel time
drops minimally.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35089 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-15 22:32:51 +00:00
Ingo Weinhold
c6aa013564 Changed VMTranslationMap::Lock()/Unlock() return types to the usual.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35075 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-14 20:44:29 +00:00
Ingo Weinhold
bcc2c157a1 Refactored vm_translation_map:
* Pulled the physical page mapping functions out of vm_translation_map into
  a new interface VMPhysicalPageMapper.
* Renamed vm_translation_map to VMTranslationMap and made it a proper C++
  class. The functions in the operations vector have become methods.
* Added class GenericVMPhysicalPageMapper implementing VMPhysicalPageMapper
  as far as possible (without actually writing new code).
* Adjusted the x86 and the PPC specifics accordingly (untested for the
  latter). For the other architectures the build is, I'm afraid, seriously
  broken.

The next steps will modify and extend the VMTranslationMap interface, so that
it will be possible to fix the bugs in vm_unmap_page[s]() and employ
architecture specific optimizations.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35066 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-14 03:26:12 +00:00
Ingo Weinhold
946325051b * Added boolean "alreadyWired" parameter to vm_map_physical_memory().
* ioapic_init(): map_physical_memory() was called for already mapped
  addresses. This worked fine, but only because the x86 page mapping code
  didn't mind.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35059 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-13 22:02:21 +00:00
Ingo Weinhold
3b8c056da0 Should have been part of r35023: Introduction of the vm_page::modified flag.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35024 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-12 01:24:40 +00:00
Ingo Weinhold
3fb2a94dfb * Inline {acquire,release}_spinlock(), when spinlock debugging is disabled.
* Use atomic_{and,or}() instead of atomic_set(), as there are no built-ins
  for the latter.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35021 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-11 22:13:11 +00:00
Ingo Weinhold
451ca8b4b4 PAGE_TYPE_GUARD was unused and for the other two types a simple one bit flag
suffices. Therefore replaced vm_page::type by vm_page::is_dummy.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35013 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-11 19:13:14 +00:00
Ingo Weinhold
d7455de2f6 allocate_page_run(): Use temporary lists to store the pages we're allocating.
This makes appending the pages to the active queue more efficient and we
don't need the vm_page::is_cleared bit anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35011 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-11 16:36:31 +00:00
Ingo Weinhold
509f1174ce * Added Size() method.
* Added Debug{First,Next}() methods to allow easy iteration through the
  address spaces in kernel debugger commands.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34978 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-09 20:21:43 +00:00
Ingo Weinhold
db28a227c4 Added GetIterator() version that takes a key and returns an iterator to the
respective element (if in the table).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34977 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-09 20:19:29 +00:00
Ingo Weinhold
924a3e5f9b Removed unused <arch>_switch_stack_and_call() and
arch_thread_switch_kstack_and_call().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34971 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-09 15:09:02 +00:00
Michael Lotz
14429e896e Reverted the part of r31520 that made devfs_unpublish_partition() take a raw
device path + child partition name. When a "raw" device is unpublished the node
removal notification triggers the partition and child partitions to be
unpublished/removed. Since in that case the "raw" node is already unpublished
trying to resolve it in devfs_unpublish_partition() again to unpublish the child
partitions would fail, leaving the child partition nodes behind. When a new raw
device would then become available publishing its partitions would fail because
of these left behind nodes, causing bug #4587. Seeing that this code is more
compact and straight forward anyway I don't quite see why it was changed in the
first place.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34967 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-09 03:55:38 +00:00
Ingo Weinhold
77690f288e Added VMCache::SwitchFromReadLock(), atomically unlocking a read lock and
starting to lock the cache.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34936 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-07 15:32:28 +00:00
Ingo Weinhold
c4f9831292 Added new mutex_switch_from_read_lock() for unlocking a read lock and
starting to lock a mutex in an atomic operation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34935 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-07 15:31:29 +00:00
Ingo Weinhold
8ab820f076 VMAddressSpace::Put() is too hot to always write lock the address spaces
table. It is now inline and uses double-checked locking. This reduces the
contention on the lock to insignificant. Total -j8 Haiku image build speedup
is marginal, but the total kernel time drops 12%.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34934 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-07 14:09:56 +00:00
Ingo Weinhold
3cd2094396 * Added new debug feature (DEBUG_PAGE_ACCESS) to detect invalid concurrent
access to a vm_page. It is basically an atomically accessed thread ID field
  in the vm_page structure, which is explicitly set by macros marking the
  critical sections. As a first positive effect I had to review quite a bit of
  code and found several issues.
* Added several TODOs and comments. Some harmless ones, but also a few
  troublesome ones in vm.cpp regarding page unmapping.
* file_cache: PrecacheIO::Prepare()/read_into_cache: Removed superfluous
  vm_page_allocate_page() return value checks. It cannot fail anymore.
* Removed the heavily contended "pages" lock. We use different policies now:
  - sModifiedTemporaryPages is accessed atomically.
  - sPageDeficitLock and sFreePageCondition are protected by a new mutex.
  - The page queues have individual locks (mutexes).
  - Renamed set_page_state_nolock() to set_page_state(). Unless the caller says
    otherwise, it does now lock the affected pages queues itself. Also changed
    the return value to void -- we panic() anyway.
* set_page_state(): Add free/clear pages to the beginning of their respective
  queues as this is more cache-friendly.
* Pages with the states PAGE_STATE_WIRED or PAGE_STATE_UNUSED are no longer
  in any queue. They were in the "active" queue, but there's no good reason
  to have them there. In case we decide to let the page daemon work the queues
  (like FreeBSD) they would just be in the way.
* Pulled the common part of vm_page_allocate_page_run[_no_base]() into a helper
  function. Also fixed a bug I introduced previously: The functions must not
  vm_page_unreserve_pages() on success, since they remove the pages from the
  free/clear queue without decrementing sUnreservedFreePages.
* vm_page_set_state(): Changed return type to void. The function cannot really
  fail and no-one was checking it anyway.
* vm_page_free(), vm_page_set_state(): Added assertion: The page must not be
  free/clear before. This is implied by the policy that no-one is allowed to
  access free/clear pages without holding the respective queue's lock, which is
  not the case at this point. This found the bug fixed in r34912.
* vm_page_requeue(): Added general assertions. panic() when requeuing of
  free/clear pages is requested. Same reason as above.
* vm_clone_area(), B_FULL_LOCK case: Don't map busy pages. The implementation is
  still not correct, though.

My usual -j8 Haiku build test runs another 10% faster, now. The total kernel
time drops about 18%. As hoped the new locks have only a fraction of the old
"pages" lock contention. Other locks lead the "most wanted list" now.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34933 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-07 02:37:05 +00:00
Ingo Weinhold
5800e8a486 * Moved the page management functionality into its own file.
* Renamed page_queue to VMPageQueue and made it a proper C++ class. Use
  DoublyLinkedList instead of own list code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34874 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-03 17:10:32 +00:00
Ingo Weinhold
be7782af0f * Removed DoublyLinkedListLinkImpl constructor. DoublyLinkedListLink doesn't
have one anymore anyway.
* Removed unnecessary setting the list links to NULL after removing a node.
* Replaced "element == NULL" check in Insert() by an assert. This just hid
  potential errors.
* Added Insert{Before,After}() methods and declared the Insert() version
  with the InsertBefore() semantics obsolete.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34873 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-03 17:07:56 +00:00
Ingo Weinhold
355dc6bef4 Inlined several VMCache methods.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34837 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 17:09:23 +00:00
Ingo Weinhold
1021fd2826 * agp_gart(): Use vm_page_[un]reserve_pages().
* Removed unused vm_page_allocate_pages().
* Removed now unused (always true) "reserved" parameter from
  vm_page_allocate_page().
* Removed unused (always false) "stealActive" parameter from steal_page().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34836 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 16:37:14 +00:00
Axel Dörfler
e30dd2c076 * If the VESA driver remaps the frame buffer on init, it will now also make
sure that the kernel's frame buffer console points to the right data.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34835 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-01-01 14:54:41 +00:00
Ingo Weinhold
2ea2527fe4 R/W lock implementation:
* Changed the rw_lock_{read,write}_unlock() return values to void. They
  returned a value != B_OK only in case of user error and no-one checked them
  anyway.
* Optimized rw_lock_read_[un]lock(). They are inline now and as long as
  there's no contending write locker, they will only perform an atomic_add().
* Changed the semantics of nested locking after acquiring a write lock: Read
  and write locks are counted separately, so read locks no longer implicitly
  become write locks. This does e.g. make degrading a write lock to a read
  lock by way of read_lock + write_unlock (as used in the VM) actually work.

These changes speed up the -j8 Haiku image build on my machine by a few
percent, but more interestingly they reduce the total kernel time by 25 %.
Apparently we get more contention on other locks, now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34830 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-31 17:03:41 +00:00
Ingo Weinhold
eb8dc1ebfb * Removed DEBUG_PAGE_CACHE_TRANSITIONS debugging.
* Added VMCache::MovePage() and MoveAllPages() to move pages between caches.
* VMAnonymousCache:
  - _MergeSwapPages(): Avoid doing anything, if neither cache has swapped out
    pages.
  - _MergeSwapPages() does now also remove source cache pages that are
    shadowed by consumer swap pages. This allows us to call _MergeSwapPages()
    before _MergePagesSmallerSource(), save the swap page shadowing check
    there and get rid of the vm_page::merge_swap flag. This is an
    optimization based on the assumption that usually none or only few pages
    are swapped out, so we save a lot of checks.
  - Implemented _MergePagesSmallerConsumer() as an alternative to
    _MergePagesSmallerSource(). The former is used when the source cache has
    more pages than the consumer cache. It iterates over the consumer cache's
    pages, moves them to the source and finally moves all pages back to the
    consumer. The final move is relatively cheap (though unfortunately we
    still have to update all pages' vm_page::cache field), so that overall we
    save iterations of the main loop with the more expensive checks.

The optimizations particularly improve the common fork()+exec*() situations.
fork() uses CoW, which is implemented by putting two new empty caches between
the to be copied area and its cache. exec*() destroys one copy of the area,
its cache and thus causes merging of the other new cache with the old cache.
Since this usually happens in a very short time, the old cache does still
contain many pages and the new cache only few. Previously the many pages were
all checked and moved individually. Now we do that for the few pages instead.

A very extreme example of this situation is the Haiku image build. jam has a
huge heap (> 200 MB) and it fork()s+exec*()s for every action to be executed.
Since during the cache merging the cache is locked, any write access to a
heap page causes jam to block until the cache merging is done. Formerly that
took so long that it killed a lot of parallelism in multi-job builds. That
could be observed particularly well when lots of small actions where executed
(like the Link, XRes, Mimeset, SetType, SetVersion combos when building
executables/libraries/add-ons). Those look dramatically better now.
The overall speed improvement for a -j8 image build on my machine is only
about 15%, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34784 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-27 16:14:13 +00:00
Ingo Weinhold
6afe50d424 * Added assignment operators.
* Some automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34783 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-27 15:19:17 +00:00
Ingo Weinhold
2e74d74f4f * Added method VMCache::TransferAreas() moving areas from one cache to
another. The code originates from vm_copy_on_write_area(). We now generate
  the VM cache tracing entries, though.
* count_writable_areas() -> VMCache::CountWritableAreas()
* Added debugger command "cache_stack" which is enabled when VM cache tracing
  is enabled. It prints the source caches of a given cache or area at the
  time of a specified tracing entry.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34751 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-22 22:00:35 +00:00
Ingo Weinhold
a38f850360 * arch_debug_get_stack_trace():
- Replaced the "userOnly" parameter by a "flags" parameter, that allows to
    specify kernel and userland stack traces individually.
  - x86, m68k: Don't always skip the first frame as that prevents the caller
    from being able to record its own address.
* capture_tracing_stack_trace(): Replaced the "userOnly" parameter by
  "kernelOnly", since one is probably always interested in the kernel stack
  trace, but might not want the userland stack trace.
* Added stack trace support for VM cache kernel tracing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34742 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-22 15:15:07 +00:00
Ingo Weinhold
1fde952c1d DefaultNotificationService:
* Added Lock()/Unlock() for explicit locking by a service user.
* Added NotifyLocked() and made Notify() inline.
* Added HasListeners() so one can check whether there is a listener at all
  before preparing the event message.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34736 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-21 20:56:50 +00:00
Ingo Weinhold
0338371f26 * All scheduler implementations:
- enqueue_in_run_queue() no longer returns whether rescheduling is supposed
    to happen. Instead is sets cpu_ent::invoke_scheduler on the current CPU.
  - reschedule() does now handle cpu_ent::invoke_scheduler_if_idle(). No need
    to let all callers do that.
* thread_unblock[_locked]() no longer return whether rescheduling is supposed
  to happen.
* Got rid of the B_INVOKE_SCHEDULER handling. The interrupt hooks really
  can't know, when it makes sense to reschedule or not.
* Introduced scheduler_reschedule_if_necessary[_locked]() functions for
  checking+invoking the scheduler.
* Some semaphore functions (e.g. delete_sem()) invoke the scheduler now, if
  they wake up anything with greater priority.
  I've also tried to add scheduler invocations in the condition variable and
  mutex/rw_lock code, but that actually has a negative impact on performance,
  probably because it causes too much ping-ponging between threads when
  multiple locking primitives are involved.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34657 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-13 21:18:27 +00:00
Ingo Weinhold
b4be7c9021 * Added cpu_ent::running_thread which is maintained by the schedulers.
* simple_smp scheduler: Rewrote the interesting part of
  enqueue_in_run_queue(). It always selects a target CPU for the inserted
  thread, now. If no CPU is idle, the CPU running the thread with the lowest
  priority is chosen. If the thread running on the target CPU has a lower
  priority than the inserted one, it will be asked to reschedule. If that's
  the current CPU, we'll return the correct value (wasn't done before at
  all).
  These changes help reducing latencies. On my machine in an idle system
  playing music DebugAnalyzer shows maximum latencies of about 1 us. I still
  find that a bit much, but it's several orders of magnitude better than
  before. The -j8 Haiku image build time dropped about 10%.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34635 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-11 19:06:57 +00:00
Ingo Weinhold
3533b6597d * Reintroduced the SMP_MSG_RESCHEDULE_IF_IDLE ICI message. This time
implemented by means of an additional member in cpu_ent.
* Removed thread::keep_scheduled and the related functions. The feature
  wasn't used yet and wouldn't have worked as implemented anyway.
* Resurrected an older, SMP aware version of our simple scheduler and made it
  the default instead of the affine scheduler. The latter is in no state to
  be used yet. It causes enormous latencies (I've seen up to 0.1s) even when
  six or seven CPUs were idle at the same time, totally killing parallelism.
  That's also the reason why a -j8 build was slower than a -j2. This is no
  longer the case. On my machine the -j2 build takes about 10% less time now
  and the -j8 build saves another 20%. The latter is not particularly
  impressive (compared with Linux), but that seems to be due to lock
  contention.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34615 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-10 11:54:38 +00:00
Ingo Weinhold
34a48c70ef Added type nanotime_t (an int64 storing a nanoseconds value) and function
system_time_nsecs(), returning the system time in nanoseconds. The function
is only really implemented for x86. For the other architectures
system_time() * 1000 is returned.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34543 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 21:43:19 +00:00
Ingo Weinhold
522c2f19d4 * Added a simple mechanism to wait for events to VMCache. WaitForPageEvents()
waits for certain events on a given page, NotifyPageEvents() wakes up
  waiting threads respectively.
* Used the new feature instead of condition variables for waiting on busy
  pages. We save publishing and unpublishing of a condition variable whenever
  a page is marked busy. There's only something to do, if there's at least
  one thread waiting in the list of the respective cache. The general
  assumption is that this is only rarely the case and even if it happens,
  there should be only very few threads.
* Added an apparently missing notification in cache_io(). At least I didn't
  see the reason for it not being there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34537 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 15:42:08 +00:00
Ingo Weinhold
6440406a59 Style changes
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34536 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 14:28:56 +00:00
Ingo Weinhold
be7328a9f6 Moved VMCache related definitions to <vm/VMCache.h>.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34535 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 14:14:21 +00:00
Ingo Weinhold
e55886c3a3 Make iteration safe. VMKernelAddressSpace::Next() doesn't like NULL pointers.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34531 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-07 01:56:01 +00:00
Ingo Weinhold
40cd019ea0 * Renamed VMAddressSpace::ResizeArea{Head,Tail}() to ShrinkArea{Head,Tail}()
to clarify that they never enlarge the area.
* Reimplemented VMKernelAddressSpace. It is somewhat inspired by Bonwick's
  vmem resource allocator (though we have different requirements):
  - We consider the complete address space to be divided into contiguous
    ranges of type free, reserved, or area, each range being represented by
    a VMKernelAddressRange object.
  - The range objects are managed in an AVL tree and a doubly linked list
    (the latter only for faster iteration) sorted by address. This provides
    O(log(n)) lookup, insertion and removal.
  - For each power of two size we maintain a list of free ranges of at least
    that size. Thus for the most common case of B_ANY*_ADDRESS area
    allocation, we find a free range in constant time (the rest of the
    processing being O(log(n))) with a rather good fit. This should also
    help avoiding address space fragmentation.
  While the new implementation should be faster, particularly with an
  increasing number of areas, I couldn't measure any difference in the -j2
  haiku build. From a cursory test the -j8 build hasn't tangibly benefitted
  either.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34528 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 17:18:04 +00:00
Ingo Weinhold
a54549a8cd * AVLTree:
- Renamed to AVLTreeBase and moved it into its own header/source file.
  - Renamed FindClose() to FindClosest().
  - Added CheckTree() method for debugging purposes. It checks the validity
    of the tree.
* Added a templatized class AVLTree which doesn't offer a map-like interface
  like AVLTreeMap, but rather one similar to BOpenHashMap and SplayTree. It
  is more convenient to use, if one wants to store objects that already
  contain the key.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34526 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 15:59:37 +00:00
Ingo Weinhold
4fb60da357 Removed the DoublyLinkedListLink constructor and destructor. They are not
necessary and prevent the structures from being used in a union.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34525 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-06 15:47:34 +00:00
Ingo Weinhold
2c1886aeae * Added VMArea subclasses VM{Kernel,User}Area and moved the address space list
link to them.
* VM{Kernel,User}AddressSpace manage the respective VMArea subclass now, and
  VMAddressSpace has grown factory methods {Create,Delete}Area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34493 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 17:07:16 +00:00
Ingo Weinhold
e2518ddbb1 Made VMAddressSpace an abstract base class and moved the area management into
new derived classes VM{Kernel,User}AddressSpace. Currently those are
identical, but that will change.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34492 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 14:45:08 +00:00
Ingo Weinhold
38a97b2c36 Moved all knowledge of reserved areas from vm.cpp to VMAddressSpace. It's a
pure address space feature, so it should be handled there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34491 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-04 13:33:25 +00:00
Ingo Weinhold
f69032f22b * Added VMAddressSpace::ResizeArea{Head,Tail}() to adjust an area's base
and size.
* Made VMArea::Set{Base,Size}() private and made VMAddressSpace a friend.
  In vm.cpp the new VMAddressSpace::ResizeArea{Head,Tail}() are used
  instead.
Finally all address space changes happen in VMAddressSpace only. *phew*
Now it's ready to be thoroughly butchered. :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34467 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 15:21:18 +00:00
Ingo Weinhold
bbd97b4bb4 Made the VMArea fields base and size private and added accessors instead.
This makes it more explicit where the fields are modified.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34464 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 14:18:24 +00:00
Colin Günther
af983c175d Coding style cleanups. Thanks axeld.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34462 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 13:05:39 +00:00
Ingo Weinhold
f5251d5b60 Added comment regarding use restriction.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34460 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 12:47:29 +00:00
Ingo Weinhold
35d940014e * Changed the address space area list to doubly linked. The reason is to
simplify migration of the area management, but as a side effect, it also
  makes area deletion O(1) (instead of O(n), n == number of areas in the
  address space).
* Moved more area management functionality from vm.cpp to VMAddressSpace and
  VMArea structure creation to VMArea. Made the list and list link members
  itself private.
* VMAddressSpace tracks its amount of free space, now. This also replaces
  the previous mechanism to do that only for the kernel address space. It
  was broken anyway, since delete_area() subtracted the area size instead of
  adding it.
* vm_free_unused_boot_loader_range():
  - lastEnd could be set to a value < start, which could cause memory
    outside of the given range to be unmapped. Haven't checked whether this
    could happen in practice -- if so, it would be seriously unhealthy.
  - The range between the end of the last area in the range and the end of
    the range would never be freed.
  - Fixed potential integer overflows when computing addresses.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34459 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 12:41:11 +00:00
Colin Günther
1581b764e0 * Adding static Notify{One,All} functions. This allows a cleaner implementation
of the condition variable and synchronization subsystem of the freebsd compat
  layer which will be committed next.
* Also there was a discussion about adding these functions on the commit
  mailing list. The mail in http://www.freelists.org/post/haiku-commits/r34395-in-haikutrunksrclibscompatfreebsd-network-compatsys,3
  is a good sum up of it (need to scroll somewhat down, though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34458 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-03 12:24:17 +00:00
Ingo Weinhold
f34a1dd5d7 Created VMArea.{h,cpp} and moved VMArea and the global area hash table (new
class VMAreaHash) there.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34450 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 19:55:59 +00:00
Ingo Weinhold
e50cf8765b * Moved the VM headers into subdirectory vm/.
* Renamed vm_cache.h/vm_address_space.h to VMCache.h/VMAddressSpace.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34449 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 18:05:10 +00:00
Ingo Weinhold
90d870c155 * Moved VMAddressSpace definition to vm_address_space.h.
* "Classified" VMAddressSpace, i.e. turned the vm_address_space_*() functions
  into methods, made all attributes (but "areas") private, and added
  accessors.
* Also turned the vm.cpp functions vm_area_lookup() and
  remove_area_from_address_space() into VMAddressSpace methods. The rest of
  the area management functionality will follow soon.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34447 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 16:12:15 +00:00
Ingo Weinhold
fc7864091e Attempt at allowing to use C++ structures in C only code: We use the
CreateAsmStructOffsetsHeader mechanism to generate a header with macros
defined to the sizes of the structures we're interested in and when compiling
in C mode define the structures as "struct { char bytes[size]; }".
It works in principle, but due to how jam works, one would have to specify the
dependency to the generated header for all sources that include it directly or
indirectly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34441 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-02 10:56:10 +00:00
Ingo Weinhold
a477e3cf20 Finished renaming of vm_cache to VMCache.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34424 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:45:55 +00:00
Ingo Weinhold
a99eb6b56f vm_area -> VMArea
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34423 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:40:04 +00:00
Ingo Weinhold
b0db552cd9 Renamed vm_address_space to VMAddressSpace.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34422 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 17:27:09 +00:00
Axel Dörfler
8de72f9d58 * Cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34416 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 16:32:48 +00:00
Ingo Weinhold
e182b46db6 Since there were no further complaints: Added mutex_lock_with_timeout().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34403 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-12-01 09:38:34 +00:00
Axel Dörfler
b8a73945cf * The kernel's address space is now also a resource that is known to the low
resource manager.
* Could be drastically improved, though, by taking the fragmentation into
  account.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34309 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-27 13:03:28 +00:00
Axel Dörfler
486fffdaaf * Forgot to add linkat(), this really closes #4928 now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34289 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:30:16 +00:00
Axel Dörfler
fb2500da15 * Added missing AT_EACCESS.
* Implemented renameat(), faccessat(), fchownat(), fchmodat(), and mkfifoat().
* Added stub for mknodat().
* The kernel backend for faccessat() does not yet differentiate between
  effective and real user/group IDs, though.
* Removed B_ENABLE_INCOMPLETE_POSIX_AT_SUPPORT, as we now support everything
  (more or less). This also closes ticket #4928.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34288 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-26 16:17:17 +00:00
Axel Dörfler
1ba04177d3 * load_image() now has exec() semantics wrt file descriptors; before each team
would always inherit them all, causing quite a number of open files.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34247 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-25 16:16:22 +00:00
Axel Dörfler
5472c0c23e * The VESA driver now tries to find the PCI card that it is controlling by
checking the physical frame buffer location.
* This allows us to map the whole frame buffer at once, which means there is no
  need anymore to remap the memory on mode change.
* Also, this will ease the burden of the MTRRs, as the memory size will be
  properly aligned.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34206 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-24 15:26:52 +00:00
Ingo Weinhold
bb163c0289 * Added a set_mtrrs() hook to x86_cpu_module_info, which is supposed to set
all MTRRs at once.
* Added a respective x86_set_mtrrs() kernel function.
* x86 CPU module:
  - Implemented the new hook.
  - Prefixed most debug output with the CPU index. Otherwise it gets quite
    confusing with multiple CPUs.
  - generic_init_mtrrs(): No longer clear all MTRRs, if they are already
    enabled. This lets us benefit from the BIOS's setup until we install our
    own -- otherwise with caching disabled things are *really* slow.
* arch_vm.cpp: Completely rewrote the MTRR handling as the old one was not
  only slow (O(2^n)), but also broken (resulting in incorrect setups (e.g.
  with cachable ranges larger than requested)), and not working by design for
  certain cases (subtractive setups intersecting ranges added later).
  Now we maintain an array with the successfully set ranges. When a new range
  is added, we recompute the complete MTRR setup as we need to. The new
  algorithm analyzing the ranges has linear complexity and also handles range
  base addresses with an alignment not matching the range size (e.g. a range
  at address 0x1000 with size 0x2000) and joining of adjacent/overlapping
  ranges of the same type.

This fixes the slow graphics on my 4 GB machine (though unfortunately the
8 MTRRs aren't enough to fully cover the complete frame buffer (about 35
pixel lines remain uncachable), but that can't be helped without rounding up
the frame buffer size, for which we don't have enough information). It might
also fix #1823.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34197 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-23 15:06:08 +00:00
Ingo Weinhold
4d7a736bbf Some more style cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34156 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 13:57:20 +00:00
Ingo Weinhold
0d1fab522b * Added flag KMESSAGE_CLONE_BUFFER, which will cause buffer passed to SetTo()
to be cloned.
* Added "flags" parameter to the SetTo(const void*,...) version.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34155 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 13:52:23 +00:00
Ingo Weinhold
395fb0895f Style cleanup. No functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34152 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 11:04:12 +00:00
Ingo Weinhold
9837ec16c8 Fixed spelling.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34144 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-20 07:10:23 +00:00
Axel Dörfler
01ce3f26d2 * Cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33951 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-08 17:31:39 +00:00
Ingo Weinhold
8d24cfc6c2 * Added Iterator::NextValuePointer().
* Made reference returned by _GetKey() const. That's sufficient.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33898 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-05 17:18:12 +00:00
Colin Günther
8ac8b52a03 Removed part about where RadixBitmap is currently used, because the FreeBSD compat layer uses it, too. I think it is prone to inconsistency managing a usage list in the header file.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33860 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-11-01 20:37:03 +00:00
Axel Dörfler
d337132b41 * Coding style cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33792 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-27 18:22:39 +00:00
Axel Dörfler
86a999adfb * delete_owned_ports() no longer scans the whole port array for ports belonging
to the owning team.
* Instead, the team now maintains a list containing the ports it owns.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33771 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-26 13:34:43 +00:00
Axel Dörfler
ddbe12007a * Semaphores are now put into the team struct in a doubly linked list.
* This makes sem_delete_owned_sems() a lot more efficient; before it would need
  to scan the entire semaphore table.
* This speeds up the test build of the kernel by another 2 seconds (with
  KDEBUG=2) on my laptop.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33743 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-23 02:06:51 +00:00
Axel Dörfler
f28dd36b82 * The alphabet is obviously hard, moved some tracing defines at their
(hopefully) correct place.
* It seems to be even harder to understand basic locking primitives: when you
  think about it, it shouldn't surprise you that conditional variables never
  return B_WOULD_BLOCK. This fixes gdb again.
* Added tracing support to the ports subsystem.
* get_port_message() will now resize the port heap if needed (but will also
  take timeouts into account while doing so, more or less). The initial port
  space is 4MB (as before), the growth rate is the same, and the system wide
  limit is arbitrarily set to 64 MB (all swappable). A team limit has been set
  to 8 MB, but is not enforced yet. Since ports are using up address space in
  the kernel, those seems to be proper limits.
* This also fixes a strange, and rare lockup where the mouse cursor would still
  move, but everything else would basically hang, but look perfectly normal from
  KDL on the first look. As recently happened on Brecht's laptop, and debugged
  by mmlr and me: the cbuf space got used up when lots of windows wanted to
  redraw after a workspace switch. The app_server wouldn't answer anymore to
  client requests, but thought it would have done so, as LinkSender::Flush()
  doesn't care if it got a B_NO_MEMORY (the ports will now block until memory
  is available if possible, so that should not be a problem anymore).
* Improved "port" KDL command, it now also prints the messages in the port.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33735 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 23:14:10 +00:00
Axel Dörfler
e8885f2097 Basically rewrote the ports subsystem to use:
* its own heap allocator instead of cbuf - this makes cbuf superfluous, and I
  therefore removed it from the kernel. The heap is swappable, so lifts the
  kernel's resource usage a bit. In the future, the heap should grow as well;
  right now it should be at least as good as before.
* it no longer uses spinlocks, but just mutexes now for better scalability - it
  was not usable with interrupts turned off anyway (due to its semaphore usage).
* it no longer uses semaphores, but condition variables.
* Needed to move the port initialization to a later point, as swappable memory
  wasn't usable that early.
* All ports test are still passing, hopefully I didn't mess anything up :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33728 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 13:24:12 +00:00
Axel Dörfler
e0aad96f94 * Allow to use symbols as variables (prefixed with '@'). Now only tab completion
for variable names is missing B-}


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33723 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 11:44:29 +00:00
Axel Dörfler
68d9d8809b * Just use the heap instead of cbuf for send_data().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33722 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 11:42:51 +00:00
Michael Lotz
4bee71c211 * Implement per-CPU heaps. They only get enabled in case there's enough memory.
* Allow an allocator to be created on the heap to allow for non-locked
  allocators to be created.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-22 08:57:34 +00:00
Michael Lotz
5ee1f125e5 Make use of the wait status field so it can be provided in Notify() and then
read out in the ConditionVariableEntry::WaitStatus(). That way you can notify
with a specific status that can be read out on the other end.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33718 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-21 23:44:59 +00:00
François Revol
546376e654 Typo.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33671 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 23:23:33 +00:00
François Revol
7c595f3353 ARM920T specific definitions (not done yet).
Board config file for the FreeRunner.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33667 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 21:13:46 +00:00
Axel Dörfler
39e3058e5b * Reverted r33643 - while it doubled the performance for my test case (with
high contention of the read lock (I experimented with the VM page mapping
  lock)), it actually hurt the compile performance pretty obviously.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33647 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-19 00:16:54 +00:00
Axel Dörfler
22ea088498 * The rw_lock is now using a mutex to protect its reader/writer counts. This
makes the reader case a lot less expensive, and should relieve the thread
  spinlock contention a bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33643 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 19:52:09 +00:00
Axel Dörfler
b2a7fcb404 * Added an arch_debug_stack_trace() function that is called from the KDL loop
in case there aren't any KDL commands available yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33642 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-18 19:50:13 +00:00
Axel Dörfler
9b912c694a * Cleanup, no functional change - this is now a pure C++ header.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33596 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 10:13:02 +00:00
Axel Dörfler
3066f3dbf8 * Reverted r33547, this closes bug #4782 - this is obviously a regression in
GCC4.
* Adapted code accordingly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33592 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-15 07:48:31 +00:00
Axel Dörfler
b74a098352 * Got rid of the duplicated functionalities provided by RWLocker.cpp, and
Locker.cpp.
* The services are now using recursive_locks, and rw_locks instead.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33548 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 14:29:05 +00:00
Axel Dörfler
4baa865937 * Added casts to the *_INITIALIZER macros, so that they can also be used in
a member constructor list.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33547 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-12 14:27:02 +00:00
Michael Lotz
7ebd7cfc40 Add a vm_page_allocate_page_run_no_base. It bases its search on the pages found
in the free and/or clear queue. This performs better in the case where only few
pages are free/clear but performs worse in the case where there are a lot of
usable pages. It's not used anywhere but it might come in handy one time.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33527 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:55:21 +00:00
Michael Lotz
44778a8a28 Introduce vm_map_physical_memory_vecs. It is like vm_map_physical_memory but
takes a list of iovecs describing the physical pages to be mapped. With it one
can map a set of physically disjoint pages into one linear virtual range. This
is a private API right now, but we might want to make it public as
map_physical_memory_vecs alongside map_physical_memory.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33523 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-11 16:48:03 +00:00
Michael Lotz
1af7d11504 * Rework page writing to combine page writes where possible. For now the pages
are required to be physically contiguos, which should be reworked to put them
  into seperate iovecs. Still this manages to combine a great deal of page
  writes into larger bursts already. Reduces the amount of IO requests being
  scheduled (and greatly benefits media where page wise writes are slow when
  they are accessed through a non-IOScheduler path, i.e. USB mass storage until
  that is properly implemented).
* Abstracted per page page writing tasks into a PageWriteWrapper class.
* Abstracted per transfer page writing tasks into PageWriteTransfer class which
  formerly was the PageWriterCallback.
* Use both classes from the PageWriterRun and from
  vm_page_write_modified_page_range to remove code duplication.
* Adjusted synchronous VMAnonymousCache::Write() to cope correctly with larger
  iovecs and more than one iovec. It assumed that there was exactly one page per
  vector previously.
* Introduced MaxPagesPerWrite() and MaxPagesPerAsyncWrite() to VMCache to allow
  a cache to specify restricitions. VMAnonymousCache does restrict the max pages
  to 1 for WriteAsync right now as I didn't feel like reworking that one to cope
  with non single page writes just yet.
* Pulled out PageWriteTransfer methods for better readability.
* Some typo fixes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33507 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-10 22:37:26 +00:00
Michael Lotz
793d0f340d Add a nogrow variant for new[] as well.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33506 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-10 22:29:11 +00:00
Ingo Weinhold
a9689e8492 * VFS:
- Fixed vfs_get_vnode_from_fd() return type.
  - Added vfs_open_vnode().
  - Added a "bool traverseLeafLink" parameter to vfs_get_fs_node_from_path().
    It was always resolving symlinks.
* device manager/devfs:
  - devfs: get_node_for_path() no longer resolves leaf symlinks. That still
    doesn't help with file disk devices, as creating partition wouldn't work
    anyway.
  - Pulled the module-related implementation part of BaseDevice into new class
    AbstractModuleDevice and made all methods of BaseDevice virtual. Small
    adjustments to devfs to be happy with the new BaseDevice interface.
  - Added BaseDevice subclass FileDevice, which maps the interface to a file's
    file descriptor. Still got a few TODOs, but should basically work.
  - Use FileDevice for publishing file disk devices in devfs. Now those do
    actually work, though there's some BFS trouble with one of the images I
    tested.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33385 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:06:34 +00:00
Ingo Weinhold
be51dd0f4c Added debug_strlcpy() for use in the kernel debugger.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33380 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-10-01 03:02:34 +00:00
François Revol
858a20cab8 Patch by Vincent Duvert:
Remove the 4 cores limit at boot, and fix the allocator to handle 8 cores.
There are still performance problems, but this allows booting with 8 cores.
WARNING: since this changes x86 platform kernel args, you really don't want to update haiku_loader and kernel_x86 separately!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33349 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-29 13:07:10 +00:00
Stefano Ceccherini
ea40a61a84 Some big changes, still not working on my laptop, since hpet interrupts
aren't routed correctly over the 8259, it seems.
- Removed passing the hpet_regs around, since there's a static variable.
- Added lots of debug dprintfs.
- Fixed setting the timer interrupt to edge
- Timer is initialized once.
- Use the timer 0 instead of 2.
- Renamed register definitions to be more readable
- Use 64 bits registers and unions where applicable.
- Other things I don't remember


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33345 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-29 08:36:36 +00:00
Stefano Ceccherini
8593bcad87 Use the hpet defines in the source.
Also shortened some defines using "TN" instead of "TIMER". It's also
the same scheme used in the specs


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33334 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 13:14:16 +00:00
Stefano Ceccherini
6e53324663 Added more HPET defines, not yet used in the source.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33331 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 05:10:43 +00:00
Ingo Weinhold
ac106be534 Inherit the disable_debugger() flag to a fork()ed child. load_image() doesn't
-- I'm undecided whether it should, too. Fixes #4642.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33330 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-28 02:54:38 +00:00
Stefano Ceccherini
3cafc2ec3e Update comments
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33316 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-27 08:50:42 +00:00
Rene Gollent
4e79886a59 Fix gcc4 build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33294 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 14:36:26 +00:00
Stefano Ceccherini
d54e62b2c8 Added dumping the timer configuration, and the possibility to use any of
the hpet timer, not just the first 3.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33285 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-25 05:08:22 +00:00
Stefano Ceccherini
cd1352fe63 Fix endianess problem: the period and capabilities bits were reversed in the hpet registers
struct definition.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33274 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-24 22:06:02 +00:00
Michael Lotz
0f4242de40 Implement a vm_block_address_range() function which creates an area with no
mapped pages and a non-read and non-write protection to block a certain address
range from being used by anything.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33030 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-10 01:40:46 +00:00
Stephan Aßmus
74e8797f5e Fixed the build. Axel is probably going to commit the cleaned up header soon.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32893 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-09-01 15:14:57 +00:00
Jonas Sundström
893988af82 Added and modified kernel stubs and headers for arch mipsel. Correctness not included.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32621 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-23 02:52:09 +00:00
Jonas Sundström
8e8130d1f0 Adding routerboard_mipsel platform stubs and linker script.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32594 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-22 01:48:18 +00:00
Michael Lotz
29bd9bfd7d Remove SMP_MSG_RESCHEDULE_IF_IDLE as it is not used anymore.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32574 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 16:14:18 +00:00
Rene Gollent
009ccc2962 anevilyak+mmlr:
* scheduler_enqueue_in_runqueue() now allows the scheduler to return a hint as to whether a reschedule is desirable or not. This is used in a few other places in order to relegate scheduling decisions entirely to the scheduler rather than the priority hacks previously used. There are probably other places in the kernel that could now make use of that information to more intelligently call reschedule() though.
* Switch over the default scheduler to scheduler_affine().



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32554 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-21 04:11:40 +00:00
Michael Lotz
152132f08a mmlr+anevilyak:
* Keep track of the currently running threads.
* Make use of that info to decide if a thread that becomes ready should preempt
  the running thread.
* If we should preempt we send the target CPU a reschedule message.
* This preemption strategy makes keeping track of idle CPUs by means of a bitmap
  superflous and it is therefore removed.
* Right now only other CPUs are preempted though, not the current one.
* Add missing initialization of the quantum tracking code.
* Do not extend the quantum of the idle thread based quantum tracking as we want
  it to not run longer than necessary. Once the preemption works completely
  adding a quantum timer for the idle thread will become unnecessary though.
* Fix thread stealing code, it did missed the last thread in the run queue.
* When stealing, try to steal the highest priority thread that is currently
  waiting by taking priorities into account when finding the target run queue.
* Simplify stealing code a bit as well.
* Minor cleanups.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32503 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-19 03:19:17 +00:00
François Revol
47eb033980 [GSoC] [ARM] Patch by Johannes Wischert.
Revert back start of kernel space to the usual place, no need to differ from other archs here.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32401 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 22:33:39 +00:00
François Revol
7db9fbfe80 Factor out the splash image display logic too.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32395 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 20:51:29 +00:00
François Revol
0573d397e1 Factor out the RLE and blitting functions from bios_ia32 to platform/generic/ so it can be reused by other platforms.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32383 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 18:15:44 +00:00
François Revol
b044ca6a19 "Haiku" -> "MIT" license.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32381 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 18:10:37 +00:00
François Revol
cf4cc90528 Fix (c) style; and use "MIT" since there is no "Haiku" license by itself.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32380 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 18:09:38 +00:00
François Revol
3f6f17cf36 [ARM]
Start of framebuffer initialization for the Verdex board.
For now it points to the data section as framebuffer for testing and shows an RGB pattern.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32352 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 12:40:16 +00:00
Axel Dörfler
bb693d7764 * Added VESA capabilities field to the kernel args.
* The vesa driver no longer uses VGA programming if the chip does not support
  VGA compatibility.
* The VESA driver now tries to set the DAC to 8 bits per color gun.
* In VESA modes, the driver no longer tries to use VGA programming; introduced
  the new vesa_set_indexed_colors() that is now used for palette programming.
  This should fix wrong colors of 8 bit BWindowScreen users with VESA on real
  hardware (emulators usually didn't mind either way).
* Note that the app_server needs to maintain a palette per 8 bit screen, as
  right now, the colors are garbled after a workspace switch. Stefano, are you
  looking into that already?


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32347 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-14 09:49:28 +00:00
François Revol
715a9925f1 [ARM]
Move ARM MMU definitions to a separate header file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32332 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 21:09:48 +00:00
François Revol
ffb5971f0d [GSoC] [ARM] Patch by Johannes Wischert.
- fix header guard,
- add needed fields to arch kernel args to pass mmu info.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32329 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 18:57:36 +00:00
François Revol
8a07056253 [ARM]
Identify cpus more precisely.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32315 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 14:45:06 +00:00
Axel Dörfler
8166e6e477 * Enlarged kernel_args array even more, as network boot needs this with all the
extra kernel drivers.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32303 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 11:07:57 +00:00
François Revol
01c8294cc7 [ARM]
- don't clobber the parameter regs in the entry point,
- fix entry point address for netbsd loader emulation,
- added a gUImage global to point to the uimage blob with the tgz,
- added tgz info to platform stage2 args,
- add simple uimage support, just dumps the header and gets the nth blob in the image, (seems we have a bug in the math code, some infos don't print),
- made devices.cpp use them to publish the MemoryDisk,
- add an haiku_loader_nbsd.ub target which puts both the loader and kernel_arm for now (need to replace with the tgz).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32295 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 05:28:30 +00:00
François Revol
b6d77b2e49 - cleanup,
- assign (c) to Haiku Inc as it's just empty anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32292 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-13 01:24:44 +00:00
François Revol
f875744d56 [ARM]
Remove duplicate header.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32202 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-08 02:26:01 +00:00
François Revol
a4d5e47408 [ARM]
debug UART is [0] on Verdex.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32200 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-08 02:18:29 +00:00
François Revol
afd3d7cbaa [ARM]
Map UARTs to the cpu specific addresses.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32198 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-08 01:05:49 +00:00
François Revol
15317caafe [ARM]
- moved board/ folder around again, it probably belongs only to kernel stuff,
- added board_config.h templates for gumstix boards.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32197 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-08 00:35:48 +00:00
François Revol
98977abc9b Fix m68k build, still unimplemented.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32102 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-03 21:17:03 +00:00
François Revol
56c6c0fefb - introduced an "argumetns" field in stage2_args to hold command line args from chaining loader,
- added some multiboot support code:
	- dump some of the passed info,
	- parse command line (skip the 'kernel' name and pass the rest to stage2_args.arguments),
- added an add_stage2_driver_settings() function which takes stage2_args.arguments and translates it into safe mode driver settings, a bit dumb for now.
This allows using qemu -kernel haiku_loader -append 'debug_screen true' and get debug output without having to enter the menu (once multiboot info is used to determine the boot device too).
The idea is to allow passing driver settings and using them to pass extra stuff (like 'force_keymap fr' and other stuff for demo), and to help automate tests ('run_test /bin/sometest').
This should answer Axel's question :)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32076 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-03 14:39:41 +00:00
Michael Lotz
255c9104e5 * Rework the heap locking strategy. Use a read-write lock for the area lock to
allow for more parallelism. Also introduce seperate locks for the bins and
  for page allocation. This greatly reduces lock contention and reduces the
  duration the locks are held due to them overall protecting less code. Now only
  allocations of the same size hitting the same allocator or allocating larger
  chunks of memory should block. Previously, basically any allocation and also
  free would be mutually exclusive, making it scale pretty badely.
* Added memalign_nogrow(). As it uses heap_memalign() anyway, there's no real
  reason not to allow for an alignment.
* Some cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32074 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-03 13:59:45 +00:00
Ingo Weinhold
ea2abd110b * Renamed the ROUNDOWN macro to ROUNDDOWN. Also changed the implementation of
ROUNDUP to use '*' and '/' -- the compiler will optimize that for powers of
  two anyway and this implementation works for other numbers as well.
* The thread::fault_handler use in C[++] code was broken with gcc 4. At least
  when other functions were invoked. Trying to trick the compiler wasn't a
  particularly good idea anyway, since the next compiler version could break
  the trick again. So the general policy is to use the fault handlers only in
  assembly code where we have full control. Changed that for x86 (save for the
  vm86 mode, which has a similar mechanism), but not for the other
  architectures.
* Introduced fault_handler, fault_handler_stack_pointer, and fault_jump_buffer
  fields in the cpu_ent structure, which must be used instead of
  thread::fault_handler in the kernel debugger. Consequently user_memcpy() must
  not be used in the kernel debugger either. Introduced a debug_memcpy()
  instead.
* Introduced debug_call_with_fault_handler() function which calls a function
  in a setjmp() and fault handler context. The architecture specific backend
  arch_debug_call_with_fault_handler() has only been implemented for x86 yet.
* Introduced debug_is_kernel_memory_accessible() for use in the kernel
  debugger. It determines whether a range of memory can be accessed in the
  way specified. The architecture specific back end
  arch_vm_translation_map_is_kernel_page_accessible() has only been implemented
  for x86 yet.
* Added arch_debug_unset_current_thread() (only implemented for x86) to unset
  the current thread pointer in the kernel debugger. When entering the kernel
  debugger we do some basic sanity checks of the currently set thread structure
  and unset it, if they fail. This allows certain commands (most importantly
  the stack trace command) to avoid accessing the thread structure.
* x86: When handling a double fault, we do now install a special handler for
  page faults. This allows us to gracefully catch faulting commands, even if
  e.g. the thread structure is toast.

We are now in much better shape to deal with double faults. Hopefully avoiding
the triple faults that some people have been experiencing on their hardware
and ideally even allowing to use the kernel debugger normally.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32073 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-03 12:39:56 +00:00
François Revol
4b8d0e6856 Some ppc fixes for #4115, patch by kallisti5 (without the #ifdef _BOOT_MODE):
- stubbed out arch_cpu_init_percpu(),
- make atomic ops declarations extern "C",
- move calls to [i]sync inside the asm code that needs it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32067 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-03 10:10:22 +00:00
Ingo Weinhold
671a2442d9 More work towards making our double fault handler less triple fault prone:
* SMP:
  - Added smp_send_broadcast_ici_interrupts_disabled(), which is basically
    equivalent to smp_send_broadcast_ici(), but is only called with interrupts
    disabled and gets the CPU index, so it doesn't have to use
    smp_get_current_cpu() (which dereferences the current thread).
  - Added cpu index parameter to smp_intercpu_int_handler().
* x86:
  - arch_int.c -> arch_int.cpp
  - Set up an IDT per CPU. We were using a single IDT for all CPUs, but that
    can't work, since we need different tasks for the double fault interrupt
    vector.
  - Set the per CPU double fault task gates correctly.
  - Renamed set_intr_gate() to set_interrupt_gate and set_system_gate() to
    set_trap_gate() and documented them a bit.
  - Renamed double_fault_exception() x86_double_fault_exception() and fixed
    it not to use smp_get_current_cpu(). Instead we have the new
    x86_double_fault_get_cpu() that deducts the CPU index from the used stack.
  - Fixed the double_fault interrupt handler: It no longer calls int_bottom to
    avoid accessing the current thread.
* debug.cpp:
  - Introduced explicit debug_double_fault() to enter the kernel debugger from
    a double fault handler.
  - Avoid using smp_get_current_cpu().
  - Don't use kprintf() before sDebuggerOnCPU is set. Otherwise
    acquire_spinlock() is invoked by arch_debug_serial_puts().

Things look a bit better when the current thread pointer is broken -- we run
into kernel_debugger_loop() and successfully print the "Welcome to KDL"
message -- but we still dereference the thread pointer afterwards, so that we
don't get a usable kernel debugger yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32050 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-08-01 01:53:54 +00:00
Ingo Weinhold
cc77aba101 * Allocate a separate double fault stack for each CPU.
* Added x86_double_fault_get_cpu(), a save way to get the CPU index when in
  the double fault handler. smp_get_current_cpu() requires at least a somewhat
  intact thread structure, so we rather want to avoid it when handling a double
  fault. There are a lot more of those dependencies in the KDL entry code.
  Working on it...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32028 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-31 16:14:18 +00:00
Ingo Weinhold
3fccf0679f C++ified the code. Introduced new trace entry flags, which will eventually be
used to mark entries after recovering a tracing log from a previous session.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31991 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-30 19:50:50 +00:00
Ingo Weinhold
213d2d8f9d Added syscall _kern_kernel_debugger() to enter the kernel debugger.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31965 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-30 12:35:42 +00:00
Ingo Weinhold
d3b44ccb14 Added explicit physical address parameter to vm_create_anonymous_area() and
create_area_etc(). 0 for the default behavior.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31941 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-29 21:30:35 +00:00
Ingo Weinhold
069b477dd7 * Introduced CREATE_AREA_DONT_CLEAR create_area_etc() flag, which allows the
call to fetch non-clear pages.
* B_PHYSICAL_BASE_ADDRESS does now imply B_CONTIGUOUS.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31932 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-29 18:57:21 +00:00
Axel Dörfler
8ae594ffd4 * Introduced dedicated syscalls for the deprecated BeOS fs_attr API. Before,
each attribute access needed 3 syscalls, now only one as it should.
* Renamed the new Haiku call fs_open_attr() to fs_fopen_attr(), and added a new
  function fs_open_attr() that takes a path (same semantics as the
  fs_[f]open_attr_dir() functions already present in BeOS).
* Merged former _kern_open_attr(), and _kern_create_attr() into one syscall.
* Cleaned up vfs.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31881 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-29 00:34:44 +00:00
François Revol
bb1325a30e [GSoC] [ARM] Patch by Johannes Wischert.
Placeholder private headers for the kernel and libroot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31820 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-27 16:23:08 +00:00
Stephan Aßmus
5147963dcd headers/private/kernel/util/OpenHashTable.h, Hugo's version, is a bit nicer than
Tracker's OpenHashTable.h which it should eventually replace. We've renamed the
class to BOpenHashTable and changed the interface slightly so that HashTableLink
became superfluous.
Adapted all the code that used it. Since the OpenHashTables no longer clash,
this should fix the GCC4 build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31791 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-27 00:39:12 +00:00
Axel Dörfler
f75b8de3fc * Discarded the "parametersSize" parameter from various disk device manager
functions.
* Since we now use UserStringParameter, this fixes the missing null termination
  of the parameter string, and thus bug #4045.
* Removed UserMemoryParameter, as it's no longer in use.
* Adjusted syscalls accordingly.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31779 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-26 17:27:27 +00:00
Axel Dörfler
bdee97bc3a * Applied slightly changed patch by Alexander von Gluck.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31708 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-23 08:22:01 +00:00
François Revol
ff84453736 [GSoC] [ARM] Patch by Johannes Wischert.
Add dummy args structs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31700 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-22 18:10:06 +00:00
Ingo Weinhold
0b11ecb18c * Always include the public arch_debugger.h headers. The structures defined
there are prefixed with the respective architecture name. Useful for remote
  debugging a different architecture.
* <x86/arch_debugger.h>: Introduced a structure for the FPU state, so that it
  isn't left to the debugger.
* Removed the _kern_get_thread_cpu_state() syscall. Was originally intended for
  bdb compatiblity, but isn't really needed.
* Kernel x86 arch_get_debug_cpu_state(): The use of fnsave was broken, since
  it reinits the FPU after saving the state. This resulted in weird results
  when debugging functions using the FPU. We now use fxsave, if available.
  Otherwise fnsave + frstor should be used -- not fully implemented yet.
  Same for arch_set_debug_cpu_state().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31682 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-21 22:18:39 +00:00
Axel Dörfler
13aa1795dd * It seems we always have to specify all flags to make it work; removed "flags"
parameter from start_system_profiler().
* Added stack depth, and interval parameters to it, though.
* Profiling the boot process is now possible.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31671 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-21 12:09:15 +00:00
Axel Dörfler
c755ecfe96 * Added an emergency key mechanism to the kernel, inspired by Jan Klötzke's
patch from about a year ago (I couldn't use any code of his yet, though,
  but there are a few things left). The emergency keys are triggered by
  pressing Alt-SysReq + key.
* By default, only Alt-SysReq+'d' is used as a means to deliberately enter
  the kernel debugger. F12 belongs to userland again, now :-)
* Debugger add-ons now have another optional method to implement their own
  emergency keys - 'd' for the debugger cannot be overridden, though.
* The mechanism can be turned off via a new kernel setting, so it's not that
  easy anymore to "crash" Haiku if you don't want to.
* Right now, the PS/2 driver, and the pre-input_server in-kernel debugger
  keyboard mini-driver support this, USB not yet.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31660 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-20 20:39:37 +00:00
Ingo Weinhold
7f96148cac Patch by Bryce Groff with changes by myself:
* Added missing name parameter to the partitioning system module child creation
  and child creation validation hooks. Pass the name to them.
* Added BPartitionParameterEditor interface, which is/will be used for editing
  disk system specific parameters.
* Implemented partition parameter editors for BFS initialization and Intel
  partition map child creation.
* Fixed the incorrect supported child partition type iteration in the Intel
  partition map add-on. It does now return actual types.
* Handle the "active" flag parameter in the Intel partitioning system module.
* DriveSetup:
  - Replaced the "Create" submenu by a simple menu item. The type can now by
    chosen in the dialog.
  - Make use of initialization and child creation parameter editors. Some
    non-generic code has been moved to the respective editor implementations
    (BFS, intel partitioning system).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31658 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-20 20:29:16 +00:00
Axel Dörfler
5fbad060b3 * Work-in-progress on a kernel profile service that can be evaluated from
userland afterwards.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31621 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-17 16:21:06 +00:00
Ingo Weinhold
a365e1cfbb Patch by Bryce Groff, some changes by myself:
* devfs:
  - devfs_[un]publish_partition(): They no longer get the partition path as
    parameter, but rather the device path and the partition name.
  - Added devfs_rename_partition(), which renames an already published
    partition node.
* KPartition/KDiskDevice:
  - Replaced the fPublished flag by fPublishedName, the name under which the
    partition is published. This simplifies UnpublishDevice() and makes it
    practically infallible.
  - Added GetFileName(), which only returns the partition's file name.
    Simplified GetPath() by using it.
  - When a partition is added/removed the subsequent sibling partitions get a
    new index. Now we also rename their published device nodes (and those of
    their descendents). When something goes wrong we unpublish the concerned
    partition's device to be on the safe side. Would be a shame to accidentally
    format the wrong partition, eh? :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31520 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-11 14:35:04 +00:00
Ingo Weinhold
1cc5e46925 Added offset and size parameters to create_child_partition() and
KPartition::CreateChild(). CreateChild() calls AddChild(), which publishes
the new partition, though at that point offset and size were not set, so that
the published devices would not be usable.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31463 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-07-08 20:26:43 +00:00
Ingo Weinhold
fab1c05c05 Split the commpage initialization into two parts. The second part is executed
after all CPUs have been queried for their features. On SMP machines
sysenter/sysexit weren't used before due to the non-boot CPUs appearing not
to have the feature.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31226 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-24 13:53:58 +00:00
Ingo Weinhold
6a1f462e72 * arch_debug_get_interrupt_pc() does now optionally return whether the iframe
is a syscall iframe.
* User debugger support: Don't to call BreakpointManager::PrepareToContinue(),
  if the thread returns from a syscall. We don't want to skip breakpoints in
  that case.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31223 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-24 11:49:35 +00:00
Ingo Weinhold
b0f12d64f4 Added transparent software breakpoint support for user debuggers:
* The bulk of the work -- i.e. juggling the software and hardware breakpoints,
  watchpoints, and memory reads/writes -- is done in the new class
  BreakpointManager.
* For the architectures a few capability macros have to be defined, one
  pointing to the software breakpoint instruction opcode. Done for x86.
* Some more simplifications in the user debugger code, made possible by the
  recently introduced debugger_changed_condition attribute.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31214 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-23 21:03:57 +00:00
Ingo Weinhold
ba391bcc56 Added team_debug_info::debugger_changed_condition to serialize changes to the
installed team debugger and adjusted the code accordingly. It's not needed yet,
but I intend to add support for software breakpoints and those require a bit of
uninitialization that needs to be synchronized with debugger changes and can't
be done with interrupts disabled.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31194 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-23 01:39:51 +00:00
Ingo Weinhold
91393e7810 InterruptsSpinLocking:
* Removed unused inner struct State.
* Added work-around for the extremely annoying "fState my be used
  uninitialized" warning gcc 4 produces. I'm not aware of any solution that
  doesn't generate unnecessary code. :-/


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31193 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-23 01:32:46 +00:00
Ingo Weinhold
5ea5f51d84 Changed ConditionVariable from class to struct to make it more C-friendly.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31191 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-22 23:49:05 +00:00
Ingo Weinhold
6dcc2a7e00 Made destroy_team_debug_info() static, as it's not used outside the source
file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31190 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-22 23:46:55 +00:00
Axel Dörfler
3609af391d * Renamed _kern_reserve_heap_address_range() to _kern_reserve_address_range(),
and added a _kern_unreserve_address_range() as well.
* The runtime loader now reserves the space needed for all its areas first
  to make sure there is enough space left for all areas of a single image.
* This also fixes the final part of bug #4008.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31115 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-19 11:09:21 +00:00
Axel Dörfler
82db8a9e15 * Added an "unmapAddressRange" argument to the file mapping syscall. This is
the first part of making the runtime loader behave itself; it should already
  make Clockwerk run okay with any number of translators (even if not all of
  them will work yet).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31113 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-19 08:23:11 +00:00
Ingo Weinhold
568ade58d0 User debugger support:
* Generalized address checks. The debugger can now also read the commpage.
* Added new syscall _kern_get_thread_cpu_state() to get the CPU state of a
  not running thread. Introduced arch_get_thread_debug_cpu_state() for that
  purpose, which is only implemented for x86 ATM (uses the new
  i386_get_thread_user_iframe()).
* Don't allow a debugger to change a thread's "esp" anymore. That's the esp
  register in the kernel. "user_esp" can still be changed.
* Generally set RF (resume flag) in eflags in interrupt handlers, not only
  after a instruction breakpoint debug exception. This should prevent
  breakpoints from being triggered more than once (e.g. when the breakpoint is
  on an instruction that can cause a page fault). I still saw those with bdb
  in VMware, but that might be a VMware bug.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31045 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-14 12:14:06 +00:00
Axel Dörfler
477a4ca70e * vfs_boot.cpp now also exports gReadOnlyBootDevice which is true when the
boot device is actually read-only (even if it's using the write overlay).
* Do not create a swap file on a read-only device - this would really be a
  stupid use of the write overlay (just saw this happening on an older
  machine).
* Made swap_file_{add|delete}() take a const char* path - there was no reason
  this was writable, and this also avoids casting away the const when adding
  the default swap file.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30975 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-05 15:52:58 +00:00
Ingo Weinhold
360d4974b9 Replaced the temporary storage used in the kernel debug command parser. We now
have a simple dedicated heap for the kernel debugger with stacked allocation
pools (deleting a pool frees all memory allocated in it). The heap should
eventually be used for all commands that need temporary storage too large for
the stack instead of each using its own static buffer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30949 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-06-03 12:28:49 +00:00
Ingo Weinhold
eb0262fc4c * Reworked vm_soft_fault() and friends:
- While walking down the cache chain, we keep all upper caches locked.
  - When we have to unlock -- when waiting for a busy page or reading a page in
    -- we unlock completely, including the address space, and restart
    vm_soft_fault().
  - Folded fault_get_page() and fault_find_page() into one.
  This simplifies and improves things considerably:
  - We no longer need dummy pages.
  - We no longer need vm_area::no_cache_change.
  - #2710 is fixed, since we no longer hold the address space lock while
    waiting.
* vm_soft_fault(): When we have found our page, we first check whether a page
  is already mapped at the address. If it is already our page, we just change
  its protection. If not, we unmap it first. Fixes race conditions when multiple
  threads fault at the same address at the same time.
* fault_get_page(): When copying a read-only page from a lower cache, no longer
  mark it active, since at least for the fault area it is shadowed from then on.
* vm_set_area_protection(): Fixed potential overflow for in the
  vm_translation_map::protect() call.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30911 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-05-29 12:55:25 +00:00
Ingo Weinhold
7515c32c1f Not sure, if this was only a gcc 4.3.3 bug or if I misunderstand something, but
gcc could apparently assume that the register assigned to the one in the
clobber list would keep its value (as can be observed when disassembling
add_debugger_command_etc()).
Using a dummy output register works around the problem and also avoids the
unnecessary initialization of the register.

Comments explaining the mystery welcome.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30909 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-05-29 01:17:53 +00:00
Ingo Weinhold
9bf61a0ecc * Added GNU style ELF symbol versioning support in the kernel, too.
* Fixed memory leak in insert_preloaded_image() in error case.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30820 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-05-21 15:08:42 +00:00
Ingo Weinhold
6a1e04b121 Symbol resolution functions in the kernel: Removed the unused parameter
allowing optional prepending of a string to the symbol names.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30750 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-05-13 15:25:27 +00:00
Axel Dörfler
2d8073a9dc * Added a TODO about a problematic use of vm_page_allocate_page() in combination
with vm_cache_acquire_locked_page_cache().
* Added new function vm_page_num_unused_pages() which returns the pages that are
  actually completely free and unused.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30514 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-30 15:46:55 +00:00
Stephan Aßmus
eb2bd0e8e3 axeld:
* Implemented a way to do asynchronous pre-fetching when mapping files.
* There are slight code duplications in some places that could benefit
  from cleaning up, but nothing too bad.
* Implementing smarter ways to trigger prefetching and more analysis of
  the situations in the kernel would be nice. Currently up to 10 MB
  of every mapped file are pre-fetched without further analysis.
* The speed improvement is nice for certain operations. On our test
  system (real hardware), Firefox took 9 seconds from being launched
  to display a window. Now it takes 5 seconds. Both measurements
  right after booting. The same system took 35 seconds from launching
  Haiku in the GRUB menu to displaying the Tracker desktop background
  image. Now it takes 27 seconds.
* We didn't have the chance to check out the effects of this on the
  CD boot, but potentially, they could speed it up a lot.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30465 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-27 18:16:58 +00:00
Ingo Weinhold
57e7daa5a4 Added missing include.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30404 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-25 18:34:24 +00:00
Ingo Weinhold
a7ccfc910c Added WaitObjectListener destructor. Hopefully fixes the gcc 2 build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30346 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-23 14:53:18 +00:00
Ingo Weinhold
227fe7d34a * Scheduler/wait object listener:
- Moved scheduler listening interface to <listeners.h> and added more
    convenient to use templatized notification functions.
  - Added a listener mechanism for the wait objects (semaphores, condition
    variables, mutex, rw_lock).
* system profiler:
  - Hopefully fixed locking issues related to notifying the profiler thread
    for good. We still had an inconsistent locking order, since the scheduler
    notification callbacks are invoked with the thread lock held and have to
    acquire the object lock then, while the other callbacks acquired the object
    lock first and as a side effect of ConditionVariable::NotifyOne() acquired
    the thread lock. Now we make sure the object lock is the innermost lock.
  - Track the number of dropped events due to a full buffer.
    _user_system_profiler_next_buffer() returns this count now.
  - When scheduling profiling events are requested also listen to wait objects
    and generate the respective profiling events. We send those events lazily
    and cache the infos to avoid resending an event for the same wait object.
  - When starting profiling we do now generate "thread scheduled" events for
    the already running threads.
  - _user_system_profiler_start(): Check whether the parameters pointer is a
    userland address at all.
  - The system_profiler_team_added event does now also contain the team's name.
* Added a sem_get_name_unsafe() returning a semaphore's name. It is "unsafe",
  since the caller has to ensure that the semaphore exists and continues to
  exist as long as the returned name is used.
* Adjusted the "profile" and "scheduling_recorder" according to the system
  profiling changes. The latter prints the number of dropped events, now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30345 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-23 13:47:52 +00:00
Ingo Weinhold
8b3b05cbf9 Synchronize the TSCs of all CPUs early in the boot process, so system_time()
will return consistent values. This helps with debug measurements for the time
being. Obviously we'll have to think of something different when we support
speed-stepping on models with frequency-dependent TSCs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30287 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-21 00:38:11 +00:00
Ingo Weinhold
65d2b8a8e9 * Introduces VMCache::CanWritePage() returning whether the given cache can
theoretically write the given page.
* page writer: Fixed the incorrect check whether a temporary page can be
  written by using the new CanWritePage().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30281 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-20 15:19:41 +00:00
Ingo Weinhold
5b2f0f33f9 * Changed the interface of _kern_system_profiler_start(). The parameters are
passed in a structure now, so it is easier to extend it and ignore unused
  parameters.
* One can now select which system profiling events one is interested in.
* Added scheduling events to the system profiling interface. Those are pretty
  much the ones recorded when scheduler tracing is enabled. Still missing are
  the "wait object" events that allow to interpret what a thread is waiting
  for.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30243 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-18 17:35:28 +00:00
Ingo Weinhold
79257a4ad6 Added a listener mechanism to the scheduler (ATM only for scheduler_simple).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30242 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-18 17:24:58 +00:00
Ingo Weinhold
e2ae69da52 The kernel side of a new system-wide sampling-based profiling mechanism.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30127 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-11 22:20:51 +00:00
Ingo Weinhold
efd536ff89 * Cleared up a misconception in the notification mechanism. We already had
methods that used an "event mask" field. There was no need to introduce
  a "flags" field for the same purpose.
* Renamed protected DefaultNotificationService methods (removed "_" prefix).
* Adjusted the code providing a notification service accordingly.
* Changed the event message several notification services generated by renaming
  the "opcode" field to "event".
* Implemented the TEAM_ADDED event and also added a TEAM_EXEC event.
* Added notifications for threads and images.
* Added visitor-like iteration functions for teams, threads, and images.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30126 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-11 21:45:25 +00:00
Ingo Weinhold
60bfde6e0f Added data accessors for B_POINTER_TYPE.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30124 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-11 21:29:22 +00:00
Ingo Weinhold
b36c8ba26a Added elf_get_kernel_image() returning the image for the kernel.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30036 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-08 16:47:45 +00:00
Axel Dörfler
8263f82d90 * Missed that when cleaning up the style.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29980 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-06 21:13:06 +00:00
Axel Dörfler
fd0803f300 * Added RemoveTail() method.
* Renamed DoublyLinkedList::Size() to Count(), since it actually counts the
  items (ie. O(n)).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29979 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-06 21:06:19 +00:00
Oliver Tappe
f9ae64e9a5 zooey + bonefish:
* optimized unmapping of a single page that was rather inefficient
  for large areas

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29978 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-06 20:46:18 +00:00
Oliver Tappe
31ffd6533a zooey + bonefish:
* made usable from C

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29977 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-06 20:42:05 +00:00
Ingo Weinhold
328029e178 Patch by Alexander von Gluck (kallisti5) to get the PPC build going again
(mostly at least). Also disables -Werror for the binutils, but those should
be fixed eventually.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29804 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-30 15:00:10 +00:00
Rene Gollent
dc707c28aa Small cleanup, no functional change.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29784 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-29 16:53:38 +00:00
Ingo Weinhold
002c9410ed Missing "struct thread" declaration, breaking the PPC build.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29780 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-29 14:43:36 +00:00
Rene Gollent
0296b82ae6 Add several extra scheduler hook functions to allow the scheduler(s) to maintain private housekeeping data on the thread structs. These hooks are called on thread creation/destruction and when prepping a thread for use. Review welcome.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-26 00:58:20 +00:00
Axel Dörfler
3f78b216ad * Implemented a basic notification mechanism. Right now, only media changes and
device additions/removals can be monitored.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29582 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-18 08:55:49 +00:00
Axel Dörfler
51755cf832 * Added DefaultNotificationService and DefaultUserNotificationService
implementations that can be used by subsystems that want to have a pretty
  standard service. Only the latter is really complete, though.
* The notification manager is now available earlier in the boot process.
* Added notifications to teams/ports (only add/remove).
* The network notification implementation is now using the
  DefaultUserNotificationService.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29543 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-15 10:21:56 +00:00
Michael Lotz
5b9d5a2ec9 * Add has_debugger_command() so whether or not a debugger command is available
can be checked.
* Make the usb_keyboard module check the presence of the needed debugger
  commands to avoid the error messages in case of them being unavailable.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29472 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-11 12:17:23 +00:00
Ingo Weinhold
b538ceb816 Added dup_foreign_fd() to duplicate a FD from another team.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29468 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-11 00:57:17 +00:00
Ingo Weinhold
2d4fb82c0f Added TableSize(), CountElements(), and Clear() methods.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29428 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-07 21:19:15 +00:00
Ingo Weinhold
a7edf1f7c0 Moved RECURSIVE_LOCK_HOLDER() macro to the header and fixed it.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29407 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-05 23:15:15 +00:00
Ingo Weinhold
5ecc4b3775 * Introduced ref-counting for the I/O contexts.
* The I/O context related vfs_*() functions have io_context* instead of void*
  parameters/return values, now.
* vfs_new_io_context(): Lock the parent I/O context before getting its table
  size. Otherwise the table size could change until we do.
* vfs_resize_fd_table(): Fixed use of MutexLocker. We created only a temporary
  object, not one with function scope.
* Renamed load_image_etc() to load_image_internal() and added a parameter for
  specifying the parent team of the one to create.
* Introduced a kernel private load_image_etc() with a few more arguments than
  load_image().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29375 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-03-02 00:26:22 +00:00
François Revol
595d8a3b9c Fix for gcc4 build. Thx Monni.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29340 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-27 22:44:05 +00:00
Ingo Weinhold
42ef52132a Made usable from userland.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29335 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-27 16:11:57 +00:00
Ingo Weinhold
e1975d3353 * When a team debugger is installed automatically, the thread causing that is
stored now.
* Extended the debugger message for B_DEBUGGER_MESSAGE_HANDED_OVER by the
  causing thread.
* Also send B_DEBUGGER_MESSAGE_HANDED_OVER to the debugger to which the team
  was handed over. The message will be the very first one the debugger gets
  from the team in question.
* Some harmless refactoring (added thread_hit_serious_debug_event()).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29302 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-23 22:59:45 +00:00
Michael Lotz
6eba063647 * Added simplified possibility to schedule UHCI transfers from within KDL.
* Added debugger commands to resolve usb_ids to pipes.
* Adjusted the physical memory allocator to be usable in a slimmed down mode
  when running inside the kernel debugger.
* Implemented USB keyboard support for KDL through a kernel debugger add-on.
* Added kgetc() and made use of it where previously individual methods were used
  to ensure that reading characters always goes through the kernel debugger
  add-ons and the other methods.

This has some preconditions to meet though:
1) The keyboard must be in the boot protocol (currently the case but needs to
   be revisited once we have a full usb_hid).
2) The keyboard must be attached to a UHCI root port (i.e. not use EHCI or OHCI,
   also not through hubs unless those are USB 1.1).
3) the usb_hid driver has to be opened for this to work. This means that for the
   time between initializing USB and when usb_hid is opened by the input_server
   there is no keyboard support.

Also note that this has no way of detecting hot-plug, meaning that you can't
re-attach your USB keyboard from the hub to the root port once in KDL.

On the bright side of things, since this is a non-destructive mechanism it is
possible to enter and leave KDL without loosing the USB state.

Tested OK in QEMU, not tested on real hardware yet, will see in a few minutes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29291 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-22 20:46:27 +00:00
Michael Lotz
3684e40bb8 * Introduce a (private) flag B_NO_HANDLED_INFO for install_io_interrupt_handler.
It causes the interrupt handler to be inserted at the very end of the list
  instead of at the top. It is intended to be used as a workaround when a
  interrupt handler cannot know if it actually handled the interrupt. This
  should never be used by native drivers. Also if we know that the result is
  not valid because of this flag we won't disable the vector in case we count
  many unhandled interrupts as those numbers are then unreliable.
* Moved B_NO_LOCK_VECTOR to be a private flag as well.
* Made the interrupt handler list a simple manually maintaned singly linked list
  instead of the doubly linked one used with insque and remque as it greatly
  simplifies things for such an easy use case and is more compact.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29241 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-17 21:41:51 +00:00
Michael Lotz
c33667d400 Fixing warnings under GCC4 in preparation to enable -Werror there as well:
* Replaced the use of offsetof() for structs that aren't PODs. Add a
  offset_of_member() macro to util/khash.h because that's what it's used for
  in our cases.
* Change the signature of add_debugger_command()/remove_debugger_command() on
  GCC > 2 to avoid the depricated conversion from string constants to char *.
* Adding some "suggested" parenthesis. I know that not everyone likes that, but
  it pointed out at least one bug that is fixed here as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29113 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-02-01 20:48:02 +00:00
Axel Dörfler
2c1e463c7e * Removed B_{MIN|MAX}_PRIORITY from OS.h - they were never really intended
as public defines. They are now called THREAD_{MIN|MAX}_SET_PRIORITY to
  better reflect what they are for. Minimum priority is now 1, ie. you no
  longer can set another thread to the idle priority. This fixes part of
  ticket #2959.
* set_thread_priority() will no longer allow to change the priority of the
  idle thread to something else. This fixes the rest of ticket #2959.
* Automatic whitespace cleanup in OS.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28521 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-05 18:11:58 +00:00
Ingo Weinhold
56eb43e3ca * Made kernel_cpp.h usable in the runtime loader.
* Added new(mynothrow) operators which avoid clashes when also linking
  against libgcc.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28474 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-03 13:15:12 +00:00
François Revol
9da2356857 Work in progress to pass the image extents to the kernel,
- code is disabled yet as the bootloader doesn't have add_boot_item.. will need to pass via kernel args
- add a GetFileMap() method to the vfs, and implement it in FAT code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28445 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-01 20:39:14 +00:00
François Revol
ebb7d4466e add header & (c)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28444 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-11-01 20:33:39 +00:00
Ingo Weinhold
9a42ad7a77 When switching to a kernel thread we no longer set the page directory.
This is not necessary, since userland teams' page directories also
contain the kernel mappings, and avoids unnecessary TLB flushes. To make
that possible the vm_translation_map_arch_info objects are reference
counted now.

This optimization reduces the kernel time of the Haiku build on my
machine with SMP disabled a few percent, but interestingly the total
time decreases only marginally. Haven't tested with SMP yet, but for
full impact CPU affinity would be needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28287 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 15:12:32 +00:00
Ingo Weinhold
412319e8eb * Use a singly linked list for the deferred free entries.
* Added deferred_delete() that takes a DeferredDeletable and deletes it
  asynchronously.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28285 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 14:46:20 +00:00
Ingo Weinhold
63a9f18f31 Added MoveFrom().
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28284 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-22 14:43:46 +00:00
François Revol
d4dcbf95f6 - Fix build.
- make system_time() return something sensible until platform code works.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28271 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-21 21:23:55 +00:00
Ingo Weinhold
53892c92a0 * Replaced scheduler_remove_from_run_queue() by
scheduler_set_thread_priority(). Setting the thread priority was the
  only situation in which it was used.
* Renamed scheduler.cpp to scheduler_simple.cpp.
* The scheduler functions are no longer called directly. Instead there's
  an operation vector now, which is initialized at kernel init time.
  This allows for picking the most suitable scheduler for the machine
  (e.g. a non-SMP scheduler on a non-SMP machine).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28262 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-21 12:37:13 +00:00
Ingo Weinhold
59dbd26f5f * Moved more debug macros to kernel_debug_config.h.
* Turned the checks for all those macros to "#if"s instead of "#ifdef"s.
* Introduced macro KDEBUG_LEVEL which serves as a master setting.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28248 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 14:24:46 +00:00
Ingo Weinhold
1894a0a98b Consistently use KDEBUG. It is always defined and therefore must be
checked with "#if".


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28247 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 13:06:04 +00:00
Ingo Weinhold
47c40a10a1 * Prefixed memset_physical() and memcpy_to_physical() with "vm_",
added vm_memcpy_from_physical() and vm_memcpy_physical_page(), and
  added respective functions to the vm_translation_map operations. The
  architecture specific implementation can now decide how to implement
  them most efficiently. Added generic implementations that can be used,
  though.
* Changed vm_{get,put}_physical_page(). The former no longer accepts
  flags (the only flag PHYSICAL_PAGE_DONT_WAIT wasn't needed anymore).
  Instead it returns an implementation-specific handle that has to be
  passed to the latter. Added vm_{get,put}_physical_page_current_cpu()
  and *_debug() variants, that work only for the current CPU,
  respectively when in the kernel debugger. Also adjusted the
  vm_translation_map operations accordingly.
* Made consequent use of the physical memory operations in the source
  tree.
* Also adjusted the m68k and ppc implementations with respect to the
  vm_translation_map operation changes, but they are probably broken,
  nevertheless.
* For x86 the generic physical page mapper isn't used anymore. It is
  suboptimal in any case. For systems with small memory it is too much
  overhead, since one can just map the complete physical memory (that's
  not done yet, though). For systems with large memory it counteracts
  the VM strategy to reuse the least recently used pages. Since those
  pages will most likely not be mapped by the page mapper anymore, it
  will keep remapping chunks. This was also the reason why building
  Haiku in Haiku was significantly faster with only 256 MB RAM (since
  that much could be kept mapped all the time).
  Now we're using a different strategy: We have small pools of virtual
  page slots per CPU that are used for the physical page operations
  (memset_physical(), memcpy_*_physical()) with CPU-pinned thread.
  Furthermore we have four slots per translation map, which are used to
  map page tables.

These changes speed up the Haiku image build in Haiku significantly. On
my Core2 Duo 2.2 GHz 2 GB machine about 40% to 20 min 40 s (KDEBUG
disabled, block cache debug disabled). Still more than factor 3 slower
than FreeBSD and Linux, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28244 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-20 00:06:09 +00:00
Ingo Weinhold
7ab39de989 * Removed unused SMP_MSG_RESCHEDULE ICI message.
* Introduced flag "invoke_scheduler" in the per CPU structure. It is
  evaluated in hardware_interrupt() (x86 only ATM).
* Introduced SMP_MSG_RESCHEDULE_IF_IDLE message, which enters the
  scheduler when the CPU currently runs an idle thread.
* Don't do dprintf() "CPU x halted!" when handling a SMP_MSG_CPU_HALT
  ICI message. It uses nested spinlocks and could thus potentially
  deadlock itself (acquire_spinlock() processes ICI messages, so it
  could already hold one of the locks). This is a pretty likely scenario
  on machines with more than two CPUs, but is also possible when the
  panic()ing thread holds the threads spinlock. Probably fixes #2572.
* Reworked the way the kernel debugger is entered and added a "cpu"
  command that allows switching the CPU once in KDL. It is thus possible
  to get a stack trace of the thread not on the panic()ing CPU.
* When a thread is added to the run queue, we do now check, if another
  CPU is idle and ask it to reschedule, if it is. Before this change, the
  CPU was continuing to idle until the quantum of the idle thread
  expired. Speeds up the libbe.so build about 8% on my machine (haven't
  tested the full Haiku image build yet).
* When spinlock debugging is enabled (DEBUG_SPINLOCKS) we also record
  the spinlock acquirer on non-smp machines. Added "spinlock" debugger
  command to get the info.
* Added debugger commands "ici" and "ici_message", printing info on
  pending ICI message respectively on a given one.
* Process not only a single ICI message in acquire_spinlock() and other
  places, but all pending ones.
* Also process ICI messages when waiting for a free one -- avoids a
  potential deadlock.
* Mask out non-existing CPUs in send_multicast_ici(). panic() instead of
  just returning when there's no target CPU left.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28223 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 18:14:08 +00:00
Ingo Weinhold
78c90d44ca Moved definition of the PAUSE macro to <cpu.h>, respectively
<arch/cpu.h>.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28221 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 16:53:31 +00:00
Ingo Weinhold
901f1930e1 * Moved memset_physical() to vm.cpp and made it available in the kernel.
* Added memcpy_to_physical().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28219 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 16:32:12 +00:00
Michael Lotz
f7de7fa4e3 Add throw() to the nogrow new operator. This will cause the right version to be
used that handles NULL returns and doesn't expect an exception. This fixes that
certain constructors would still be called even if the allocation failed in low
memory situations.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28208 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-17 08:32:42 +00:00
Ingo Weinhold
6e595b29e3 Moved KERNEL_BREAKPOINTS to kernel_debug_config.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28197 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-16 21:43:32 +00:00
Ingo Weinhold
3b248948f2 Added ThreadCPUPinner AutoLocker class.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28196 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-16 21:41:11 +00:00
François Revol
2cf4975b4b Add FAT32 support. This allows the bootloader to find a BFS image file (currently named BEOS\IMAGE.BE) and start booting for it, until the kernel tries to mount the boot partition.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28156 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-15 23:54:04 +00:00
Michael Lotz
945a6a41ac bonefish + mmlr:
* Add possibility to restart a complete pipe through B_KDEBUG_RESTART_PIPE.
* Implement tail in the kernel debugger making use of the former.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28154 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-15 23:43:27 +00:00
François Revol
86cb5b45da - Move MFP freq to a separate header
- initialize the time_base_frequency kernel arg (should be done in the bootloader though...). We will use MFP timer to support system_time(). At least try to.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28098 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-14 18:40:45 +00:00
Axel Dörfler
38bbc95758 * Made the use of file devices more convenient and complete by adding
the methods IsFile() and GetFilePath() to BDiskDevice, and
  BDiskDeviceRoster::GetFileDeviceForPath().
* Added new syscalls to implement this functionality.
* Added new flag B_DISK_DEVICE_IS_FILE.
* Fixed wrong operator precedence assumption in the BDiskDevice class at
  several places.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28052 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 21:51:43 +00:00
François Revol
9a787d297d ADd platform hooks to read RTC. platform code should mimic the PC CMOS chip.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28035 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 13:55:57 +00:00
François Revol
7d49488b80 - cleanup
- remove dead ppc code
- add support for probing hardware registers the way linux does (early, hook with VBR to trap faults)
- detect MFPs this way.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28031 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-13 12:56:16 +00:00
Axel Dörfler
ddecb4a7da * Changed the way the demangle functionality works: instead of having a kernel
debugger add-on set a demangle hook, all modules under debugger/demangle/ are
  now considered demangle modules.
* Added another function to the demangle module interface that gives you access
  to the arguments.
* Implemented a demangling module for GCC2.
* The older demangling module is now called "gcc3+", but doesn't support
  getting the arguments yet.
* The "call" KDL command is now using demangling to automatically show you
  the arguments of a call from a stack crawl.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28018 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-12 23:50:41 +00:00
Ingo Weinhold
6503e5d9c6 Added functions to pin a thread to the current CPU (i.e. it will only be
scheduled on that CPU) and to avoid unscheduling it.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27974 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-11 18:11:12 +00:00
Ingo Weinhold
4eaa43ac48 * Added "flags" parameter to VMCache::Read().
* Use the new VMCache::Read() flags parameter to directly read into the
  physical page in the page fault handler instead of mapping it first.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27966 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-11 07:30:44 +00:00
Ingo Weinhold
b18c9b97ae * Implemented x86 assembly version of memset().
* memset() is now available through the commpage.
* CPU modules can provide a model-optimized memset().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27952 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-10 18:43:46 +00:00
Ingo Weinhold
74785e79db * Added "from" address space parameter to vm_swap_address_space()/
arch_vm_aspace_swap().
* The x86 implementation does now maintain a bit mask per
  vm_translation_map_arch_info indicating on which CPUs the address
  space is active. This allows flush_tmap() to avoid ICI for user
  address spaces when the team isn't currently running on any other CPU.
  In this context ICI is relatively expensive, particularly since we map
  most pages via vm_map_page() and therefore invoke flush_tmap() pretty
  much for every single page.
  This optimization speeds up a "hello world" compilation about 20% on
  my machine (KDEBUG turned off, freshly booted), but interestingly it
  has virtually no effect on the "-j2" haiku build time.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27912 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 21:39:19 +00:00
Ingo Weinhold
6bbe7eb8ca * smp.c -> smp.cpp
* Added smp_send_multicast_ici(), which sends the message to all CPUs
  specified via a mask.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27910 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 21:14:24 +00:00
Ingo Weinhold
dbe295f827 Moved vm_translation_map_arch_info definition to the header.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27902 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-07 11:49:13 +00:00
Ingo Weinhold
e43cb37bcd Moved several VM related debug settings to kernel_debug_config.h.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27876 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-05 13:15:04 +00:00
Ingo Weinhold
567f78895b Fully inline {disable,restore}_interrupts() and friends when including
<int.h>. Performance-wise not really significant, but gives nicer
profiling results.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27827 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-01 14:33:10 +00:00
Ingo Weinhold
f8bdc2443d Created a central place for putting kernel debug enabling macros.
Currently it only contains KDEBUG and the block cache debugging macros.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27816 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-01 11:56:44 +00:00
Ingo Weinhold
f965a969b1 Extended the profiling API. When using the variable stack trace depth
buffer format, the buffer can now also contain other events than just
stack traces. ATM these are only references to the image events
(created/deleted). Therefore we no longer have to flush the profiling
buffer after such an event, since the debugger can exactly match the
samples. Since we couldn't flush when the profiling timer hit while the
thread was in the kernel, that wasn't working that well anyway.
"profile -f" fails to translate stack trace addresses only very rarely,
now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27775 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-29 00:53:38 +00:00
Ingo Weinhold
0dc4d1e5ca Reverted r27685, r27676, r27665, and r27664, the changes related to
letting the boot loader provide full paths for the pre-loaded images.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27753 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-27 00:28:10 +00:00
Ingo Weinhold
6075e354ab * Call module_init_post_boot_device() right after the boot volume has
been mounted, before anyone could try to load any modules from it.
  Also pass it a flag whether the boot volume is where the boot loader
  pre-loaded the modules from.
* module_init_post_boot_device() changes the pre-loaded module image
  paths to normalized boot volume paths, now. Got rid of the code in
  register_preloaded_module_image() which tried something like this.
* Changed module image ref counting. A referenced module has single
  reference to its image, which is released when the module becomes
  unreferenced.
* get_module() for a reference module will not try to re-get and re-set
  the module's image anymore. That could lead to a similar module (from
  different paths) being loaded at the same time. A module from a new
  file can only be loaded when the old one has been put completely.
* Simplified B_KEEP_ALIVE module handling a bit. When the module is
  initialized, we add another reference, which we'll never free. Thus
  the module remains loaded without special handling. Removed
  module_image::keep_loaded. A B_KEEP_ALIVE module remains referenced
  and thus its image remains referenced, too.
* Removed module::file, a cached path to the module's image. An
  optimization that wouldn't work with multiple root directories for
  modules (/boot/beos/..., /boot/common/...) or when module files were
  moved. get_module() does now always search the image file, when the
  module is still unreferenced. This should be a bit slower than before,
  but I didn't notice any difference in VMware at least. If it turns out
  to be a problem we could introduce a more intelligent cache that stays
  up to date by using node monitoring.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27752 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-26 23:59:53 +00:00
Ingo Weinhold
e8d3eff968 * vfs_normalize_path() and _user_normalize_path() use a common helper
function (normalize_path()), now. There was some code duplication
  before.
* Added "bool traverseLink" parameter to vfs_normalize_path(). When
  true and the leaf component is a symlink, it will be resolved.
* KPath:
  - Added similar leaf link traversal parameter to SetTo() and
    SetPath().
  - Added Normalize().
  - Added DetachBuffer(), which returns the object's current buffer and
    unsets itself.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27751 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-26 23:30:28 +00:00
Ingo Weinhold
8a85be4636 Register the commpage as an image and its entries as symbols.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27722 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-24 14:41:42 +00:00
Ingo Weinhold
fec47a5702 Added functions elf_create_memory_image() and
elf_add_memory_image_symbol(). The former creates and registers a new
image that has not been loaded from a file. The latter adds a symbol to
its symbol table. This is mainly a debug feature, allowing to name code
or data in memory regions that aren't associated with loaded ELF
objects.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27721 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-24 14:40:24 +00:00
Ingo Weinhold
5181b35bee Introduced a separate flag for indicating that disable_debugger() had
been called for a team, and fail installing the default debugger if it
is set. This makes disable_debugger() actually work. Fixes bug #2763.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27713 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-23 20:17:58 +00:00