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1469 Commits

Author SHA1 Message Date
rmind eb51bf5884 uvm_map_lock_entry: fix the order of locking. Spotted by yamt@. 
Also, keep uvm_map_unlock_entry() symmetric.
 2011-06-13 23:19:40 +00:00
mrg a14dae9853 include uvm_object.c in the rump kernel for the new uvm_obj* functions. 
don't build the uvm_object.c uvm_object_printit() for _RUMPKERNEL. (XXX)
add empty panic() stubs for uvm_loanbreak() and ubc_purge().

fixes some more 5.99.53 rump build issues.
 2011-06-12 06:36:38 +00:00
rmind e225b7bd09 Welcome to 5.99.53! Merge rmind-uvmplock branch: 
- Reorganize locking in UVM and provide extra serialisation for pmap(9).
  New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
  the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
  Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
  kernel-lock on some ports).  Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.
 2011-06-12 03:35:36 +00:00
matt 8704f281b7 Fix fencepost error. 2011-06-05 16:58:00 +00:00
tsutsui 2d7fb158b6 No need to pass UVM_FLAG_COLORMATCH to uvm_pagealloc() 
if no valid vaddr is specified.
 2011-05-21 11:49:34 +00:00
yamt 3b8a580f96 g/c unused function prototypes 2011-05-19 09:57:20 +00:00
rmind 4b0ec60601 ubc_release: use voff_t for offsets, rather than int. Constify. 
Reviewed by matt@.
 2011-05-19 03:44:19 +00:00
mrg a852848eef fix the ordering and make UVMHIST enable KERNHIST automatically. 2011-05-17 05:32:31 +00:00
mrg 8169e46991 move and rename the uvm history code out of uvm_stat to "kernhist". 
rename "UVMHIST" option to enable the uvm histories.

TODO:
- make UVMHIST properly depend upon KERNHIST
- enable dynamic registration of histories.  this is mostly just
  allocating something in a bitmap, and is only for viewing multiple
  histories in a merged form.


tested on amd64 and sparc64.
 2011-05-17 04:18:05 +00:00
rmind fe41737f5c Remove public uvm_swap_stats() routine, keep it internal. 2011-04-27 00:35:52 +00:00
rmind 520d1ecfd3 Initialize UVM loaning subsystem a bit later, after kmem(9). 
Makes UVMHIST work again.
 2011-04-24 03:56:50 +00:00
rmind c22a36981f Replace "malloc" in comments, remove unnecessary header inclusions. 2011-04-23 18:14:12 +00:00
yamt 500e2272be - ensure that the promoted page is on the queue even when later pmap_enter 
failed.
- don't activate a page twice.
- remove an argument which is used only for an assertion.
- assertions and comments.
 2011-04-08 10:42:51 +00:00
yamt 09f62f3554 comment 2011-04-08 10:36:58 +00:00
rmind 5940ea9676 uvm_pageidlezero: use try-lock to not occupy uvm_fpageqlock, which may 
be on demand by other CPUs.  Reduces lock contention in some workloads
on many CPU (8+) systems.

Tested by tls@.
 2011-04-01 00:47:11 +00:00
drochner f376d5576a make this build w/o HAVE_CPU_UAREA_ROUTINES 2011-02-18 10:43:52 +00:00
matt 4f38307d62 Add support for cpu-specific uarea allocation routines. Allows different 
allocation for user and system lwps.  MIPS will use this to map uareas of
system lwp used direct-mapped addresses (to reduce the overhead of
switching to kernel threads).  ibm4xx could use to map uareas via direct
mapped addresses and avoid the problem of having the kernel stack not in
the TLB.
 2011-02-17 19:27:13 +00:00
jmcneill 50ba38fe0a need uvm_pmap.h for pmap_mmap_flags definition 2011-02-12 14:45:31 +00:00
jmcneill ee6551845f add optional MD pmap_mmap_flags macro for passing flags between cdev_mmap 
and pmap_enter, ok matt@
 2011-02-11 23:05:55 +00:00
rmind cdc76ff97e Replace uvm_aobj_cache with kmem(9). 2011-02-11 00:21:18 +00:00
skrll b5b02ca20c Spell uvm_fault_lower_neighbor correctly in UVMHIST_FUNC by using 
__func__
 2011-02-10 21:05:52 +00:00
pooka 22c822c7f3 Make vmapbuf() return success/error and make physio deal with a 
failure.
 2011-02-10 14:46:44 +00:00
yamt c6c7ed993c pageobj: remove a wrong assertion. 2011-02-05 13:33:47 +00:00
chuck afca0358a6 udpate license clauses on my code to match the new-style BSD licenses. 
verified with Mike Hibler it is ok to remove clause 3 on utah copyright,
as per UCB.
based on diff that rmind@ sent me.

no functional change with this commit.
 2011-02-02 20:07:25 +00:00
chuck beb929a933 udpate license clauses on my code to match the new-style BSD licenses. 
based on diff that rmind@ sent me.

no functional change with this commit.
 2011-02-02 17:53:41 +00:00
chuck f9d8cc1a37 udpate license clauses on chuck^2 code to match the new-style BSD licenses. 
based on diff that rmind@ sent me (and confirmed with chs@ via email).

no functional change with this commit.
 2011-02-02 15:28:38 +00:00
chuck 40ec801a13 udpate license clauses on my code to match the new-style BSD licenses. 
based on second diff that rmind@ sent me.

no functional change with this commit.
 2011-02-02 15:25:27 +00:00
chuck 3ba477b154 udpate license clauses on my code to match the new-style BSD licenses. 
based on diff that rmind@ sent me.

no functional change with this commit.
 2011-02-02 15:13:33 +00:00
enami 40713a94c3 Introducing inner loop prevent us from exiting from the original loop. 2011-01-26 08:49:48 +00:00
matt d32b258b78 When starting the second pass, don't continue the for loop but instead 
just test try exceeding limit.
 2011-01-25 17:22:43 +00:00
enami 7f4cb8b53c Remove nop code; the code is moved to uao_dropswap_range1() when it is 
introduced in rev. 1.75.
 2011-01-25 03:34:29 +00:00
matt cb4ebd8be4 Use the (new) KDASSERTMSG 2011-01-24 22:54:01 +00:00
matt 12708a66ee Fix start_hint in "simple" alloc (fencepost error). 
When restarting the loop, make sure end is not above current limit.
Do a quick test to see if the physseg is within the range of desired addresses.
 2011-01-24 19:13:55 +00:00
he e9075e068f DEBUG does not imply DIAGNOSTIC; make sure we have a non-null 
KASSERTMSG implementation (DIAGNOSTIC) so that the variable inside
the DEBUG section gets used.
 2011-01-23 21:29:52 +00:00
matt 5f98725eda Fix the corruption of ps->start_hint. 2011-01-22 01:36:27 +00:00
matt 651bde3939 Cleanup/add some asserts. no functional change. 2011-01-21 19:27:09 +00:00
cegger c6a6ce3477 buildfix: use PRIxPADDR for type paddr_t 2011-01-21 16:56:38 +00:00
matt 37726e8583 Improve the efficiency of searching for a contiguous set of free pages. 2011-01-18 21:43:29 +00:00
rmind 7146b2f61d Retire struct user, remove sys/user.h inclusions. Note sys/user.h header 
as obsolete.  Remove USER_TO_UAREA/UAREA_TO_USER macros.

Various #include fixes and review by matt@.
 2011-01-14 02:06:22 +00:00
enami eaefa873fe Fix bugs introduced by previous commit; allocated page needs to be bound 
with the anon, and uvmfault_anonget may be called with ufi NULL.
 2011-01-06 05:51:57 +00:00
enami 7b2a66bec9 Fix format string; use PRIu64 for uint64_t. 2011-01-05 21:20:44 +00:00
matt 4d8e8a7e36 Add better color matching selecting free pages. KM pages will now allocated 
so that VA and PA have the same color.  On a page fault, choose a physical
page that has the same color as the virtual address.

When allocating kernel memory pages, allow the MD to specify a preferred
VM_FREELIST from which to choose pages.  For machines with large amounts
of memory (> 4GB), all kernel memory to come from <4GB to reduce the amount
of bounce buffering needed with 32bit DMA devices.
 2011-01-04 08:26:33 +00:00
matt 5d3db402fb Add a MD hook to indicate a change of vmspace due to exec. (This is useful 
to update any cpu flag due to a change to/from a 64bit and a 32bit address
space).  This can set the state needed for copyout/copyin before setregs
is invoked.
 2011-01-04 08:21:18 +00:00
matt b3322481fa Print the number of page colors in use with db> show uvm 2011-01-04 08:17:01 +00:00
matt 6a66466f0c Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch 
from uvmexp to per-cpu cpu_data and move them to 64bits.  Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.
 2010-12-20 00:25:23 +00:00
yamt 473b1715a5 cosmetics. no functional changes. 
- constify
- wrap long lines
- assertions
- comments
 2010-12-17 22:00:43 +00:00
pooka fe0a6aa142 Remove duplicate asserts from when uvm_fault_lower1() was merged 
into uvm_fault_lower() (the duplicates were there already before,
just in different functions).

reported by Alexander Nasonov on tech-kern
 2010-12-15 13:44:17 +00:00
matt 9898b7c4fd When panicing due a non-power of 2 pagesize, include the pagesize in the 
panic message.
 2010-12-11 22:34:03 +00:00
uebayasi 565a3d3094 Make UVM_PAGE_TRKOWN a real flag. 2010-12-09 01:48:05 +00:00
hannken bd8f6f0b8f Always take the object lock before changing vmpage flags. Fixes a deadlock 
where a thread is waiting on "genput" but the page in question is neither
BUSY nor WANTED.

No objections from tech-kern@.
 2010-11-30 10:55:25 +00:00