Commit Graph

23 Commits

Author SHA1 Message Date
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
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
53e1017720 bonefish + mmlr:
* We started the "main2" thread too late. Since the scheduler was already
  started on all CPUs, the idle thread could wait (for a mutex) while
  spawing the "main2" thread. This violated the assumption in the scheduler
  that all idle threads would always be ready or running. We now create the
  thread while the kernel runs still single-threaded.
* scheduler_start() is now invoked with interrupts still disabled. We enable
  them after the function returns. This prevents scheduler_reschedule() from
  potentially being invoked before scheduler_start().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29914 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-04 23:54:01 +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
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
Michael Lotz
83d8936cff Move semaphore initialization a bit earlier in boot. They'll be needed by ACPI.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28186 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-10-16 21:11:37 +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
Axel Dörfler
ca7cb625b9 * Implemented a (private for now) get_system_info_etc() call, that can retrieve
various system information.
* Implemented retrieving some VM stats via this call.
* The VM now maintains a page fault counter, and sets system_info::page_faults
  accordingly.
* Added a (pretty simple) "vmstat" command line app.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27597 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-17 16:27:17 +00:00
Salvatore Benedetto
40dae3708f * Adding msg{rcv,snd,get,ctl} syscalls to the system
* Add message queue init function call to main.cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27417 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-11 15:03:01 +00:00
Salvatore Benedetto
f273b13ddb * Renamed xsi_ipc_init() to xsi_sem_init() as there will be a xsi_msg_init()
for message queue
* Removed unnecessary header Vector.h
* Removed HasSemaphoreSet method: since there will be an IPC table for each
  subsystem, if a key exist, it already has a semaphore set associated
  with it


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27256 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-31 15:59:32 +00:00
Axel Dörfler
5a123e3591 * Added a post boot device module init function that unloads all unused modules,
as they aren't unloaded when there is no boot device yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27136 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-22 09:41:10 +00:00
Axel Dörfler
423fcd43ae * Shuffled initializers around: the team, ELF, and module initializers come
now a lot earlier.
* That makes it now possible to use modules pretty early in the kernel (like
  before timer_init(), or int_init_post_vm()).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26790 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-04 13:26:13 +00:00
Ingo Weinhold
355604212d Patch by Zhao Shuai with changes by myself:
* Keep track of the stack space actually allocated for the cache and let
  Write() fail when we've already allocated as much as reserved.
* Added second phase of swap initialization (swap_init_post_modules())
  which reads the virtual memory driver settings and creates/resizes a
  swap file. ATM truncate() is used to resize the swap file, but that is
  a bit slow. We should probably introduce a VFS function to use BFS's
  fast method.

This should make swap support work somewhat, but since swap space is
never freed ATM this would be a relatively short pleasure. Still
disabled by default.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26783 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-04 03:28:46 +00:00
Axel Dörfler
272457553e * Renamed kernel_startup to gKernelStartup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26731 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-02 15:03:03 +00:00
Axel Dörfler
11790544cd Minor cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26729 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-08-02 14:52:18 +00:00
Axel Dörfler
47ca7595ca First patch by Salvatore to implement XSI semaphores with a few changes
by myself:
* renamed xsi_do_undo() to xsi_sem_undo() (there is more to XSI than sems).
* Fixed coding style issues in sys/sem.h and xsi_sem.cpp.
* Added _kern_*() syscall prototypes to syscalls.h.
* Added a TODO in xsi_sem.cpp and xsi_semaphore.h about moving union semun to
  a shared header.
* Made the team::xsi_sem_undo_requests int32 - due to padding, it would have
  needed 4 bytes anyway; please always use specific types over int/short/long.
* xsi_sem_undo() now checks if it needs to do anything - the calls in team.cpp
  no longer needs to do this.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26676 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-29 12:03:41 +00:00
Ingo Weinhold
c586076dca Patch by Zhao Shuai with changes by myself:
* Init swap support in main().
* Added "bool swappable" parameter to
  VMCacheFactory::CreateAnonymousCache(). A cache supporting swapping
  is created when true. Adjusted invocations accordingly.
* The page writer does now write non-locked swappable pages (when
  memory is low).
* Fixed header guard of VMAnonymousNoSwapCache.h.
* Swap support is compiled conditionally, controlled by the
  ENABLE_SWAP_SUPPORT in src/system/kernel/vm/VMAnonymousCache.h. It is
  disabled ATM. Since no swap files are added, it wouldn't have much
  effect anyway.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26625 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-24 23:33:38 +00:00
Ingo Weinhold
5c99d63970 Merged branch haiku/branches/developer/bonefish/vm into trunk. This
introduces the following relevant changes:
* VMCache:
  - Renamed vm_cache to VMCache, merged it with vm_store and made it a
    C++ class with virtual methods (replacing the store operations).
    Turned the different store implementations into subclasses.
  - Introduced MergeStore() callback, changed semantics of Commit().
  - Changed locking and referencing semantics. A reference can only be
    acquired/released with the cache locked. An unreferenced cache is
    deleted and a mergeable cache merged when it is unlocked. This
    removes the "busy" state of a cache and simplifies the page fault
    code.
* Added VMAnonymousCache, which will implement swap support (work by
  Zhao Shuai). It is not integrated and used yet, though.
* Enabled the mutex/recursive lock holder asserts.
* Fixed DoublyLinkedList::Swap().
* Generalized the low memory handler to a low resource handler. And made
  semaphores and reserved memory handled resources. Made
  vm_try_resource_memory() optionally wait (with timeout), and used that
  feature to reserve memory for areas.
...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26572 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-22 20:36:32 +00:00
Ingo Weinhold
383a9ac435 * Added an explicit boot_splash_uninit(). Not really needed, but makes
it clear when boot_splash_set_stage() must no longer be used.
* Free the memory associated with the kernel args before starting the
  init process. Unlike the original TODO stated there are quite a few
  more users of the kernel args (including the boot splash screen),
  hence we can't really do that earlier, unless we decide to copy the
  data over to the kernel heap. 


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26344 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-07-09 15:25:01 +00:00
Michael Lotz
f5b3a6a796 * Initialize all static mutexes in the kernel through a MUTEX_INITIALIZER()
and remove the then unneeded mutex_init() for them.
* Remove the workaround for allowing uninitialized mutexes on kernel startup.
  As they are all initialized statically through the MUTEX_INITIALIZER() now
  this is not needed anymore.
* An uninitialized mutex will now cause a panic when used to find possibly
  remaining cases.
* Remove now unnecessary driver_settings_init_post_sem() function.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25812 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-06-05 23:19:27 +00:00
Ingo Weinhold
1c8de8581b * Added optional spinlock contention measurement feature. Enabled when
B_DEBUG_SPINLOCK_CONTENTION is defined to 1. It typedefs spinlock to a
  structure (thus breaking BeOS binary compatibility), containing a
  counter which is incremented whenever a thread has to wait for the
  spinlock.
* Added macros for spinlock initialization and access and changed
  code using spinlocks accordingly. This breaks compilation for BeOS --
  the macros should be defined in the respective compatibility wrappers.
* Added generic syscall to get the spinlock counters for the thread and
  the team spinlocks.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25752 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-06-02 02:04:12 +00:00
Axel Dörfler
368167ede8 * Integration of the new driver architecture.
* Moved devfs from fs/ to device_manager/, and separated the legacy driver
  support from it.
* Removed fast_log module.
* There are a couple of (temporary) regressions, though:
  - legacy SATA and ISA IDE support is disabled, the drivers haven't been
    ported yet.
  - The not yet used ATA bus manager hasn't been ported yet, either.
  - AHCI changes have not been tested.
  - the listdev command has been removed from the build (as it currently
    doesn't work anymore).
  - device manager generated IDs currently are not freed anymore when a device
    node is removed.
  - generic drivers can't yet use the new driver architecture.
  - simple busses that do not support device types won't work yet.
  - legacy driver publishing/unpublishing (ie. what USB needs) has not been
    tested, and may be broken.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25662 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-26 16:52:27 +00:00
Stephan Aßmus
7c61d84fcd Patch by Vasilis Kaoutsis:
* Renamed main.c to main.cpp
* Use find_directory() to construct the Bootscript path.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25509 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-15 12:10:12 +00:00