Christoph Hellwig [Fri, 12 Oct 2007 00:59:34 +0000 (10:59 +1000)]
[XFS] xlog_rec_header/xlog_rec_ext_header endianess annotations
Mostly trivial conversion with one exceptions: h_num_logops was kept in
native endian previously and only converted to big endian in xlog_sync,
but we always keep it big endian now. With todays cpus fast byteswap
instructions that's not an issue but the new variant keeps the code clean
and maintainable.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29821a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Fri, 12 Oct 2007 00:58:59 +0000 (10:58 +1000)]
[XFS] clean up some xfs_log_priv.h macros
- the various assign lsn macros are replaced by a single inline,
xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except
for a more sane calling convention. ASSIGN_LSN_DISK is replaced
by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same,
except we pass the cycle and block arguments explicitly instead of a
log paramter. The latter two variants only had 2, respectively one
user anyway.
- the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the
same calling conventions.
- GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away
the unused arch argument. Instead of conditional defintions
depending on host endianess we now do an unconditional swap and shift
then, which generates equal code.
- the unused XLOG_SET macro is removed.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29820a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Fri, 12 Oct 2007 00:58:05 +0000 (10:58 +1000)]
[XFS] clean up some xfs_log_priv.h macros
- the various assign lsn macros are replaced by a single inline,
xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except
for a more sane calling convention. ASSIGN_LSN_DISK is replaced
by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same,
except we pass the cycle and block arguments explicitly instead of a
log paramter. The latter two variants only had 2, respectively one
user anyway.
- the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the
same calling conventions.
- GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away
the unused arch argument. Instead of conditional defintions
depending on host endianess we now do an unconditional swap and shift
then, which generates equal code.
- the unused XLOG_SET macro is removed.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29819a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 08:11:14 +0000 (18:11 +1000)]
[XFS] kill xfs_freeze.
No need to have a wrapper just two call two more functions.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29816a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 08:11:03 +0000 (18:11 +1000)]
[XFS] cleanup vnode useage in xfs_iget.c
Get rid of vnode useage in xfs_iget.c and pass Linux inode / xfs_inode
where apropinquate. And kill some useless helpers while we're at it.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29808a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 08:09:50 +0000 (18:09 +1000)]
[XFS] cleanup vnode useage in xfs_ioctl.c
xfs_ioctl.c passes around vnode pointers quite a lot, but all places
already have the Linux inode which is identical to the vnode these days.
Clean the code up to always use the Linux inode.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29807a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 08:09:40 +0000 (18:09 +1000)]
[XFS] Kill off xfs_statvfs.
We were already filling the Linux struct statfs anyway, and doing this
trivial task directly in xfs_fs_statfs makes the code quite a bit cleaner.
While I was at it I also moved copying attributes that don't change over
the lifetime of the filesystem outside the superblock lock.
xfs_fs_fill_super used to get the magic number and blocksize through
xfs_statvfs, but assigning them directly is a lot cleaner and will save
some stack space during mount.
SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29802a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 07:46:39 +0000 (17:46 +1000)]
[XFS] simplify xfs_vn_getattr
Just fill in struct kstat directly from the xfs_inode instead of doing a
detour through a bhv_vattr_t and xfs_getattr.
SGI-PV: 970980
SGI-Modid: xfs-linux-melb:xfs-kern:29770a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Thu, 11 Oct 2007 07:44:08 +0000 (17:44 +1000)]
[XFS] kill xfs_iocore_t
xfs_iocore_t is a structure embedded in xfs_inode. Except for one field it
just duplicates fields already in xfs_inode, and there is nothing this
abstraction buys us on XFS/Linux. This patch removes it and shrinks source
and binary size of xfs aswell as shrinking the size of xfs_inode by 60/44
bytes in debug/non-debug builds.
SGI-PV: 970852
SGI-Modid: xfs-linux-melb:xfs-kern:29754a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:43:56 +0000 (17:43 +1000)]
[XFS] Remove spin.h
remove spinlock init abstraction macro in spin.h, remove the callers, and
remove the file. Move no-op spinlock_destroy to xfs_linux.h Cleanup
spinlock locals in xfs_mount.c
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29751a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:43:43 +0000 (17:43 +1000)]
[XFS] Cleanup lock goop.
Switch last couple lock_t's to spinlock_t's. Remove now-unused
spinlock-related macros & types.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29748a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:43:32 +0000 (17:43 +1000)]
[XFS] ktrace kt_lock is unused, remove it.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29747a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:42:32 +0000 (17:42 +1000)]
[XFS] Unwrap XFS_SB_LOCK.
Un-obfuscate XFS_SB_LOCK, remove XFS_SB_LOCK->mutex_lock->spin_lock
macros, call spin_lock directly, remove extraneous cookie holdover from
old xfs code, and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29746a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:42:10 +0000 (17:42 +1000)]
[XFS] Unwrap mru_lock.
Un-obfuscate mru_lock, remove mutex_lock->spin_lock macros, call spin_lock
directly, remove extraneous cookie holdover from old xfs code.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29745a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:41:21 +0000 (17:41 +1000)]
[XFS] Unwrap xfs_dabuf_global_lock
Un-obfuscate dabuf_global_lock, remove mutex_lock->spin_lock macros, call
spin_lock directly, remove extraneous cookie holdover from old xfs code,
and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29744a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:38:28 +0000 (17:38 +1000)]
[XFS] Unwrap pagb_lock.
Un-obfuscate pagb_lock, remove mutex_lock->spin_lock macros, call
spin_lock directly, remove extraneous cookie holdover from old xfs code,
and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29743a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:38:18 +0000 (17:38 +1000)]
[XFS] Unwrap XFS_DQ_PINUNLOCK.
Un-obfuscate DQ_PINLOCK, remove DQ_PINLOCK->mutex_lock->spin_lock macros,
call spin_lock directly, remove extraneous cookie holdover from old xfs
code, and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29742a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:37:31 +0000 (17:37 +1000)]
[XFS] Unwrap GRANT_LOCK.
Un-obfuscate GRANT_LOCK, remove GRANT_LOCK->mutex_lock->spin_lock macros,
call spin_lock directly, remove extraneous cookie holdover from old xfs
code, and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29741a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Eric Sandeen [Thu, 11 Oct 2007 07:37:10 +0000 (17:37 +1000)]
[XFS] Unwrap LOG_LOCK.
Un-obfuscate LOG_LOCK, remove LOG_LOCK->mutex_lock->spin_lock macros, call
spin_lock directly, remove extraneous cookie holdover from old xfs code,
and change lock type to spinlock_t.
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29740a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Donald Douwsma [Thu, 11 Oct 2007 07:36:05 +0000 (17:36 +1000)]
[XFS] Unwrap AIL_LOCK
SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29739a
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Lachlan McIlroy [Thu, 11 Oct 2007 07:34:33 +0000 (17:34 +1000)]
[XFS] kill unnessecary ioops indirection
Currently there is an indirection called ioops in the XFS data I/O path.
Various functions are called by functions pointers, but there is no
coherence in what this is for, and of course for XFS itself it's entirely
unused. This patch removes it instead and significantly reduces source and
binary size of XFS while making maintaince easier.
SGI-PV: 970841
SGI-Modid: xfs-linux-melb:xfs-kern:29737a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Wed, 19 Sep 2007 05:27:49 +0000 (15:27 +1000)]
[XFS] simplify vn_revalidate
No need to allocate a bhv_vattr_t on stack and call xfs_getattr to update
a few fields in the Linux inode from the XFS inode, just do it directly.
And yes, this function is in dire need of a better name and prototype,
I'll do in a separate patch, though.
SGI-PV: 970705
SGI-Modid: xfs-linux-melb:xfs-kern:29713a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Lachlan McIlroy [Mon, 17 Sep 2007 03:11:58 +0000 (13:11 +1000)]
[XFS] more vnode/inode tracing fixes
SGI-PV: 970335
SGI-Modid: xfs-linux-melb:xfs-kern:29697a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Fri, 14 Sep 2007 05:23:31 +0000 (15:23 +1000)]
[XFS] kill BMAPI_UNWRITTEN
There is no reason to go through xfs_iomap for the BMAPI_UNWRITTEN because
it has nothing in common with the other cases. Instead check for the
shutdown filesystem in xfs_end_bio_unwritten and perform a direct call to
xfs_iomap_write_unwritten (which should be renamed to something more
sensible one day)
SGI-PV: 970241
SGI-Modid: xfs-linux-melb:xfs-kern:29681a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Christoph Hellwig [Fri, 14 Sep 2007 05:23:17 +0000 (15:23 +1000)]
[XFS] kill BMAPI_DEVICE
There is no reason to go into the iomap machinery just to get the right
block device for an inode. Instead look at the realtime flag in the inode
and grab the right device from the mount structure.
I created a new helper, xfs_find_bdev_for_inode instead of opencoding it
because I plan to use it in other places in the future.
SGI-PV: 970240
SGI-Modid: xfs-linux-melb:xfs-kern:29680a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Lachlan McIlroy [Thu, 7 Feb 2008 05:42:19 +0000 (16:42 +1100)]
[XFS] clean up vnode/inode tracing
Simplify vnode tracing calls by embedding function name & return addr in
the calling macro.
Also do a lot of vnode->inode renaming for consistency, while we're at it.
SGI-PV: 970335
SGI-Modid: xfs-linux-melb:xfs-kern:29650a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Lachlan McIlroy [Fri, 14 Sep 2007 05:21:08 +0000 (15:21 +1000)]
[XFS] remove dead SYNC_BDFLUSH case in xfs_sync_inodes
A large part of xfs_sync_inodes is conditional on the SYNC_BDFLUSH which
is never passed to it. This patch removes it and adds an assert that
triggers in case some new code tries to pass SYNC_BDFLUSH to it.
SGI-PV: 970242
SGI-Modid: xfs-linux-melb:xfs-kern:29630a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Linus Torvalds [Mon, 4 Feb 2008 23:29:53 +0000 (15:29 -0800)]
Merge branch 'for-linus' of /home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
[ARM] 4818/1: RealView: Add core-tile detection
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
[ARM] 4813/1: Add SMP helper functions for clockevents support
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
[ARM] 4798/1: pcm027: fix missing header file
[ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
[ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
[ARM] pxa: introduce sysdev for pxa3xx static memory controller
[ARM] pxa: add preliminary suspend/resume code for pxa3xx
[ARM] pxa: introduce sysdev for GPIO register saving/restoring
[ARM] pxa: introduce sysdev for IRQ register saving/restoring
...
Linus Torvalds [Mon, 4 Feb 2008 20:14:55 +0000 (12:14 -0800)]
Merge branch 'slub-linus' of git://git./linux/kernel/git/christoph/vm
* 'slub-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm:
Explain kmem_cache_cpu fields
SLUB: Do not upset lockdep
SLUB: Fix coding style violations
Add parameter to add_partial to avoid having two functions
SLUB: rename defrag to remote_node_defrag_ratio
Move count_partial before kmem_cache_shrink
SLUB: Fix sysfs refcounting
slub: fix shadowed variable sparse warnings
Christoph Lameter [Tue, 8 Jan 2008 07:20:31 +0000 (23:20 -0800)]
Explain kmem_cache_cpu fields
Add some comments explaining the fields of the kmem_cache_cpu structure.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
root [Tue, 8 Jan 2008 07:20:28 +0000 (23:20 -0800)]
SLUB: Do not upset lockdep
inconsistent {softirq-on-W} -> {in-softirq-W} usage.
swapper/0 [HC0[0]:SC1[1]:HE0:SE0] takes:
(&n->list_lock){-+..}, at: [<
ffffffff802935c1>] add_partial+0x31/0xa0
{softirq-on-W} state was registered at:
[<
ffffffff80259fb8>] __lock_acquire+0x3e8/0x1140
[<
ffffffff80259838>] debug_check_no_locks_freed+0x188/0x1a0
[<
ffffffff8025ad65>] lock_acquire+0x55/0x70
[<
ffffffff802935c1>] add_partial+0x31/0xa0
[<
ffffffff805c76de>] _spin_lock+0x1e/0x30
[<
ffffffff802935c1>] add_partial+0x31/0xa0
[<
ffffffff80296f9c>] kmem_cache_open+0x1cc/0x330
[<
ffffffff805c7984>] _spin_unlock_irq+0x24/0x30
[<
ffffffff802974f4>] create_kmalloc_cache+0x64/0xf0
[<
ffffffff80295640>] init_alloc_cpu_cpu+0x70/0x90
[<
ffffffff8080ada5>] kmem_cache_init+0x65/0x1d0
[<
ffffffff807f1b4e>] start_kernel+0x23e/0x350
[<
ffffffff807f112d>] _sinittext+0x12d/0x140
[<
ffffffffffffffff>] 0xffffffffffffffff
This change isn't really necessary for correctness, but it prevents lockdep
from getting upset and then disabling itself.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Pekka Enberg [Tue, 8 Jan 2008 07:20:27 +0000 (23:20 -0800)]
SLUB: Fix coding style violations
This fixes most of the obvious coding style violations in mm/slub.c as
reported by checkpatch.
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Christoph Lameter [Tue, 8 Jan 2008 07:20:27 +0000 (23:20 -0800)]
Add parameter to add_partial to avoid having two functions
Add a parameter to add_partial instead of having separate functions. The
parameter allows a more detailed control of where the slab pages is placed in
the partial queues.
If we put slabs back to the front then they are likely immediately used for
allocations. If they are put at the end then we can maximize the time that
the partial slabs spent without being subject to allocations.
When deactivating slab we can put the slabs that had remote objects freed (we
can see that because objects were put on the freelist that requires locks) to
them at the end of the list so that the cachelines of remote processors can
cool down. Slabs that had objects from the local cpu freed to them (objects
exist in the lockless freelist) are put in the front of the list to be reused
ASAP in order to exploit the cache hot state of the local cpu.
Patch seems to slightly improve tbench speed (1-2%).
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Christoph Lameter [Tue, 8 Jan 2008 07:20:26 +0000 (23:20 -0800)]
SLUB: rename defrag to remote_node_defrag_ratio
The NUMA defrag works by allocating objects from partial slabs on remote
nodes. Rename it to
remote_node_defrag_ratio
to be clear about this.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Christoph Lameter [Tue, 8 Jan 2008 07:20:26 +0000 (23:20 -0800)]
Move count_partial before kmem_cache_shrink
Move the counting function for objects in partial slabs so that it is placed
before kmem_cache_shrink.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Christoph Lameter [Tue, 8 Jan 2008 06:29:05 +0000 (22:29 -0800)]
SLUB: Fix sysfs refcounting
If CONFIG_SYSFS is set then free the kmem_cache structure when
sysfs tells us its okay.
Otherwise there is the danger (as pointed out by
Al Viro) that sysfs thinks the kobject still exists after
kmem_cache_destroy() removed it.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Reviewed-by: Pekka J Enberg <penberg@cs.helsinki.fi>
Harvey Harrison [Thu, 31 Jan 2008 23:20:50 +0000 (15:20 -0800)]
slub: fix shadowed variable sparse warnings
Introduce 'len' at outer level:
mm/slub.c:3406:26: warning: symbol 'n' shadows an earlier one
mm/slub.c:3393:6: originally declared here
No need to declare new node:
mm/slub.c:3501:7: warning: symbol 'node' shadows an earlier one
mm/slub.c:3491:6: originally declared here
No need to declare new x:
mm/slub.c:3513:9: warning: symbol 'x' shadows an earlier one
mm/slub.c:3492:6: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Russell King [Mon, 4 Feb 2008 17:54:39 +0000 (17:54 +0000)]
Merge branches 'at91', 'ixp', 'master', 'misc', 'pxa' and 'realview' into devel
* at91:
[ARM] 4802/1: Fix typo and remove vague comment
[ARM] 4660/3: at91: allow selecting UART for early kernel messages
[ARM] 4739/1: at91sam9263: make gpio bank C and D irqs work
* ixp:
[ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c
[ARM] 4808/2: ixp4xx: Merge nas100d-power.c into nas100d-setup.c
[ARM] 4807/2: ixp4xx: Merge nslu2-power.c into nslu2-setup.c
[ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards
[ARM] 4805/1: ixp4xx: Use leds-gpio driver instead of IXP4XX-GPIO-LED driver
[ARM] 4715/2: Ethernet support for IXDP425 boards
[ARM] 4714/2: Headers for IXP4xx built-in Ethernet and WAN drivers
[ARM] 4713/3: Adds drivers for IXP4xx QMgr and NPE features
[ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits
[ARM] 4774/2: ixp4xx: Register dsmg600 rtc i2c_board_info
[ARM] 4773/2: ixp4xx: Register nas100d rtc i2c_board_info
[ARM] 4772/2: ixp4xx: Register nslu2 rtc i2c_board_info
[ARM] 4769/2: ixp4xx: Button updates for the dsmg600 board
[ARM] 4768/2: ixp4xx: Button and LED updates for the nas100d board
[ARM] 4767/2: ixp4xx: Add bitops.h include to io.h
[ARM] 4766/2: ixp4xx: Update ixp4xx_defconfig, enabling all supported boards
* master:
[ARM] 4810/1: - Fix 'section mismatch' building warnings
[ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking
[ARM] 21285 serial: fix build error
* misc:
[ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags
* pxa:
[ARM] 4798/1: pcm027: fix missing header file
[ARM] 4803/1: pxa: fix building issue of poodle.c caused by patch 4737/1
[ARM] 4801/1: pxa: fix building issues of missing pxa2xx-regs.h
[ARM] pxa: introduce sysdev for pxa3xx static memory controller
[ARM] pxa: add preliminary suspend/resume code for pxa3xx
[ARM] pxa: introduce sysdev for GPIO register saving/restoring
[ARM] pxa: introduce sysdev for IRQ register saving/restoring
[ARM] pxa: fix the warning of undeclared "struct pxaohci_platform_data"
[ARM] pxa: change set_kset_name() to direct name assignment for MFP sysclass
* realview:
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
[ARM] 4818/1: RealView: Add core-tile detection
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
[ARM] 4813/1: Add SMP helper functions for clockevents support
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
Catalin Marinas [Mon, 4 Feb 2008 16:47:04 +0000 (17:47 +0100)]
[ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
This patch changes the REALVIEW_MPCORE configuration option to
REALVIEW_EB_ARM11MP since this is only specific to RealView/EB.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:45:03 +0000 (17:45 +0100)]
[ARM] 4821/1: RealView: Remove the platform dependencies from localtimer.c
This patch removes the TWD_BASE macro used to set up and configure the
local timers on ARM11MPCore. The twd_base_addr and twd_size variables
are defined in localtimer.c and set from the realview_eb_init function.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:43:02 +0000 (17:43 +0100)]
[ARM] 4820/1: RealView: Select the timer IRQ at run-time
This patch sets the timer IRQ at run-time by moving the sys_timer
structure and the timer_init function to the realview_eb.c file. This
allows multiple RealView platforms to be compiled in the same kernel
image.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:41:01 +0000 (17:41 +0100)]
[ARM] 4819/1: RealView: Fix entry-macro.S to work with multiple platforms
This patch modifies the get_irqnr_preamble macro to work with multiple
platforms at run-time by reading the address of the GIC controller from
the gic_cpu_base_addr variable. This variable is defined in core.c and
intialised in realview_eb.c (gic_init_irq).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:39:00 +0000 (17:39 +0100)]
[ARM] 4818/1: RealView: Add core-tile detection
This patch adds the core-tile detection and only enables devices if the
corresponding tile is present. It currently detects the ARM11MPCore via
the core_tile_eb11mp() macro.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:36:59 +0000 (17:36 +0100)]
[ARM] 4817/1: RealView: Move the AMBA resource definitions to realview_eb.c
This patch moves the IRQ and DMA definitions from core.h into
realview_eb.c since they are platform-specific. It adds a
realview_eb11mp_fixup function to adjust the IRQ numbers if the
ARM11MPCore tile is fitted. The realview_smc91x_device is also moved
from core.c into realview_eb.c.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:34:58 +0000 (17:34 +0100)]
[ARM] 4816/1: RealView: Move the platform-specific definitions into board-eb.h
This patch moves the platform specific definitions from platform.h into
the board-eb.h file. It drops the INT_* definitions as they are no
longer used in irqs.h (moved to board-eb.h). It renames REALVIEW_*
macros to REALVIEW_EB_* or REALVIEW_EB11MP_* to distinguish between
standard EB and EB + the ARM11MPCore tile. The platform.h file contains
common definitions to the RealView platforms and it is only directly
included in board-*.h files.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:32:57 +0000 (17:32 +0100)]
[ARM] 4815/1: RealView: Add clockevents suport for the local timers
This patch registers the local timers on ARM11MPCore as clock event
devices. The clock device can be set up as periodic or oneshot.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:30:57 +0000 (17:30 +0100)]
[ARM] 4814/1: RealView: Add broadcasting clockevents support for ARM11MPCore
This patch adds dummy local timers for each CPU so that the board clock
device is used to broadcast events to the other CPUs. The patch also
adds the declaration for the dummy_timer_setup function (the equivalent
of local_timer_setup when CONFIG_LOCAL_TIMERS is not set).
Due to the way clockevents work, the dummy timer on the first CPU has to
be registered before the board timer.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:28:56 +0000 (17:28 +0100)]
[ARM] 4813/1: Add SMP helper functions for clockevents support
This patch adds the smp_call_function_single and smp_timer_broadcast
functions and modifies ipi_timer to call the platform-specific function
local_timer_interrupt.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:26:55 +0000 (17:26 +0100)]
[ARM] 4812/1: RealView: clockevents support for the RealView platforms
The patch updates the RealView code to the clockevents infrastructure.
The SMP support is implemented in subsequent patches. Based on the
Versatile implementation by Kevin Hilman.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas [Mon, 4 Feb 2008 16:24:54 +0000 (17:24 +0100)]
[ARM] 4811/1: RealView: clocksource support for the RealView platforms
The patch updates the RealView platform code to use the generic
clocksource infrastructure for basic time keeping. Based on the
Versatile implementation by Kevin Hilman.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Linus Torvalds [Mon, 4 Feb 2008 17:16:03 +0000 (09:16 -0800)]
Merge git://git./linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (78 commits)
x86: fix RTC lockdep warning: potential hardirq recursion
x86: cpa, micro-optimization
x86: cpa, clean up code flow
x86: cpa, eliminate CPA_ enum
x86: cpa, cleanups
x86: implement gbpages support in change_page_attr()
x86: support gbpages in pagetable dump
x86: add gbpages support to lookup_address
x86: add pgtable accessor functions for gbpages
x86: add PUD_PAGE_SIZE
x86: add feature macros for the gbpages cpuid bit
x86: switch direct mapping setup over to set_pte
x86: fix page-present check in cpa_flush_range
x86: remove cpa warning
x86: remove now unused clear_kernel_mapping
x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_mapping()
x86: cpa selftest, skip non present entries
x86: CPA fix pagetable split
x86: rename LARGE_PAGE_SIZE to PMD_PAGE_SIZE
x86: cpa, fix lookup_address
...
Linus Torvalds [Mon, 4 Feb 2008 16:00:54 +0000 (08:00 -0800)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (25 commits)
virtio: balloon driver
virtio: Use PCI revision field to indicate virtio PCI ABI version
virtio: PCI device
virtio_blk: implement naming for vda-vdz,vdaa-vdzz,vdaaa-vdzzz
virtio_blk: Dont waste major numbers
virtio_blk: provide getgeo
virtio_net: parametrize the napi_weight for virtio receive queue.
virtio: free transmit skbs when notified, not on next xmit.
virtio: flush buffers on open
virtnet: remove double ether_setup
virtio: Allow virtio to be modular and used by modules
virtio: Use the sg_phys convenience function.
virtio: Put the virtio under the virtualization menu
virtio: handle interrupts after callbacks turned off
virtio: reset function
virtio: populate network rings in the probe routine, not open
virtio: Tweak virtio_net defines
virtio: Net header needs hdr_len
virtio: remove unused id field from struct virtio_blk_outhdr
virtio: clarify NO_NOTIFY flag usage
...
Linus Torvalds [Mon, 4 Feb 2008 15:58:52 +0000 (07:58 -0800)]
Merge git://git./linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (79 commits)
Jesper Juhl is the new trivial patches maintainer
Documentation: mention email-clients.txt in SubmittingPatches
fs/binfmt_elf.c: spello fix
do_invalidatepage() comment typo fix
Documentation/filesystems/porting fixes
typo fixes in net/core/net_namespace.c
typo fix in net/rfkill/rfkill.c
typo fixes in net/sctp/sm_statefuns.c
lib/: Spelling fixes
kernel/: Spelling fixes
include/scsi/: Spelling fixes
include/linux/: Spelling fixes
include/asm-m68knommu/: Spelling fixes
include/asm-frv/: Spelling fixes
fs/: Spelling fixes
drivers/watchdog/: Spelling fixes
drivers/video/: Spelling fixes
drivers/ssb/: Spelling fixes
drivers/serial/: Spelling fixes
drivers/scsi/: Spelling fixes
...
Linus Torvalds [Mon, 4 Feb 2008 15:58:03 +0000 (07:58 -0800)]
Merge branch 'locks' of git://linux-nfs.org/~bfields/linux
* 'locks' of git://linux-nfs.org/~bfields/linux:
pid-namespaces-vs-locks-interaction
file locks: Use wait_event_interruptible_timeout()
locks: clarify posix_locks_deadlock
Haavard Skinnemoen [Mon, 4 Feb 2008 11:44:48 +0000 (12:44 +0100)]
kbuild: Fix instrumentation removal breakage on avr32
AVR32 still includes Kconfig.instrumentation, so it won't build after
this...
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 4 Feb 2008 15:56:17 +0000 (07:56 -0800)]
Merge git://git./linux/kernel/git/sam/kbuild
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild:
scsi: fix dependency bug in aic7 Makefile
kbuild: add svn revision information to setlocalversion
kbuild: do not warn about __*init/__*exit symbols being exported
Move Kconfig.instrumentation to arch/Kconfig and init/Kconfig
Add HAVE_KPROBES
Add HAVE_OPROFILE
Create arch/Kconfig
Fix ARM to play nicely with generic Instrumentation menu
kconfig: ignore select of unknown symbol
kconfig: mark config as changed when loading an alternate config
kbuild: Spelling/grammar fixes for config DEBUG_SECTION_MISMATCH
Remove __INIT_REFOK and __INITDATA_REFOK
kbuild: print only total number of section mismatces found
Nick Piggin [Sat, 2 Feb 2008 02:08:53 +0000 (03:08 +0100)]
vm audit: add VM_DONTEXPAND to mmap for drivers that need it
Drivers that register a ->fault handler, but do not range-check the
offset argument, must set VM_DONTEXPAND in the vm_flags in order to
prevent an expanding mremap from overflowing the resource.
I've audited the tree and attempted to fix these problems (usually by
adding VM_DONTEXPAND where it is not obvious).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Geert Uytterhoeven [Sun, 3 Feb 2008 15:49:09 +0000 (16:49 +0100)]
ADB: Add missing #include <linux/platform_device.h>
Commit
c9f6d3d5c6d4f4cd3a53549a69c92951180e2a76 ("[POWERPC] adb: Replace
sleep notifier with platform driver suspend/resume hooks") introduced
compile errors on m68k because <linux/platform_device.h> is not
explicitly included. On powerpc, it's pulled in through <asm/prom.h>.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Mon, 4 Feb 2008 15:48:10 +0000 (16:48 +0100)]
x86: fix RTC lockdep warning: potential hardirq recursion
After disabling both CONFIG_DEBUG_LOCKING_API_SELFTESTS and netconsole
(using current mainline) I get a login prompt, and also...
[ 5.181668] SELinux: policy loaded with handle_unknown=deny
[ 5.183315] type=1403 audit(
1202100038.157:3): policy loaded auid=
4294967295 ses=
4294967295
[ 5.822073] SELinux: initialized (dev usbfs, type usbfs), uses genfs_contexts
[ 7.819146] ------------[ cut here ]------------
[ 7.819146] WARNING: at kernel/lockdep.c:2033 trace_hardirqs_on+0x9b/0x10d()
[ 7.819146] Modules linked in: generic ext3 jbd ide_disk ide_core
[ 7.819146] Pid: 399, comm: hwclock Not tainted 2.6.24 #4
[ 7.819146] [<
c011d140>] warn_on_slowpath+0x41/0x51
[ 7.819146] [<
c01364a9>] ? lock_release_holdtime+0x50/0x56
[ 7.819146] [<
c013770c>] ? check_usage_forwards+0x19/0x3b
[ 7.819146] [<
c01390c4>] ? __lock_acquire+0xac3/0xb0b
[ 7.819146] [<
c0108c98>] ? native_sched_clock+0x8b/0x9f
[ 7.819146] [<
c01364a9>] ? lock_release_holdtime+0x50/0x56
[ 7.819146] [<
c030ca6c>] ? _spin_unlock_irq+0x22/0x42
[ 7.819146] [<
c013848b>] trace_hardirqs_on+0x9b/0x10d
[ 7.819146] [<
c030ca6c>] _spin_unlock_irq+0x22/0x42
[ 7.819146] [<
c011481e>] hpet_rtc_interrupt+0xdf/0x290
[ 7.819146] [<
c014ea90>] handle_IRQ_event+0x1a/0x46
[ 7.819146] [<
c014f8ea>] handle_edge_irq+0xbe/0xff
[ 7.819146] [<
c0106e08>] do_IRQ+0x6d/0x84
[ 7.819146] [<
c0105596>] common_interrupt+0x2e/0x34
[ 7.819146] [<
c013007b>] ? ktime_get_ts+0x8/0x3f
[ 7.819146] [<
c0139420>] ? lock_release+0x167/0x16f
[ 7.819146] [<
c017974a>] ? core_sys_select+0x2c/0x327
[ 7.819146] [<
c0179792>] core_sys_select+0x74/0x327
[ 7.819146] [<
c0108c98>] ? native_sched_clock+0x8b/0x9f
[ 7.819146] [<
c01364a9>] ? lock_release_holdtime+0x50/0x56
[ 7.819146] [<
c030ca6c>] ? _spin_unlock_irq+0x22/0x42
[ 7.819146] [<
c01384d6>] ? trace_hardirqs_on+0xe6/0x10d
[ 7.819146] [<
c030ca77>] ? _spin_unlock_irq+0x2d/0x42
[ 7.819146] [<
c023b437>] ? rtc_do_ioctl+0x11b/0x677
[ 7.819146] [<
c01c487e>] ? inode_has_perm+0x5e/0x68
[ 7.819146] [<
c01364a9>] ? lock_release_holdtime+0x50/0x56
[ 7.819146] [<
c0108c98>] ? native_sched_clock+0x8b/0x9f
[ 7.819146] [<
c01c490b>] ? file_has_perm+0x83/0x8c
[ 7.819146] [<
c023ba08>] ? rtc_ioctl+0xf/0x11
[ 7.819146] [<
c017898d>] ? do_ioctl+0x55/0x67
[ 7.819146] [<
c0179d15>] sys_select+0x93/0x163
[ 7.819146] [<
c0104b39>] ? sysenter_past_esp+0x9a/0xa5
[ 7.819146] [<
c0104afe>] sysenter_past_esp+0x5f/0xa5
[ 7.819146] =======================
[ 7.819146] ---[ end trace
96540ca301ffb84c ]---
[ 7.819210] rtc: lost 6 interrupts
[ 7.870668] type=1400 audit(
1202128840.794:4): avc: denied { audit_write } for pid=399 comm="hwclock" capability=29 scontext=system_u:system_r:hwclock_t:s0 tcontext=system_u:system_r:hwclock_t:s0 tclass=capability
[ 9.538866] input: PC Speaker as /class/input/input5
Because hpet_rtc_interrupt()'s call to get_rtc_time() ends up
resolving to include/asm-generic/rtc.h's (hilariously inlined)
get_rtc_time(), which does spin_unlock_irq() from hard IRQ context.
The obvious patch fixes it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:10 +0000 (16:48 +0100)]
x86: cpa, micro-optimization
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Mon, 4 Feb 2008 15:48:10 +0000 (16:48 +0100)]
x86: cpa, clean up code flow
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Ingo Molnar [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: cpa, eliminate CPA_ enum
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Ingo Molnar [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: cpa, cleanups
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: implement gbpages support in change_page_attr()
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: support gbpages in pagetable dump
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: add gbpages support to lookup_address
[ tglx@linutronix.de: fix bootup crash on sparse mappings. ]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: add pgtable accessor functions for gbpages
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: add PUD_PAGE_SIZE
a PUD entry covers 1GB of virtual memory.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: add feature macros for the gbpages cpuid bit
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:09 +0000 (16:48 +0100)]
x86: switch direct mapping setup over to set_pte
Use set_pte() for setting up the 2MB pages in the direct mapping.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: fix page-present check in cpa_flush_range
pte_present() might return true for PROT_NONE mappings.
Explicitely check the present bit.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: remove cpa warning
this race is legit and can happen on SMP systems.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: remove now unused clear_kernel_mapping
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_mapping()
pci-gart needs to unmap the IOMMU aperture to prevent cache corruptions.
Switch this over to using set_memory_np() instead of clear_kernel_mapping().
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: cpa selftest, skip non present entries
pud and pmd entries in the RAM area might be marked as non present.
Do not try to modify them in the selftest.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: CPA fix pagetable split
Move the readout of the large entry into the spinlock section to
prevent an unlikely but possible race.
Mark the pmd/pud entry present after the split. We preserved the
non present bit in the new split mapping.
Remove the stale gfp_flags double initialization.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Andi Kleen [Mon, 4 Feb 2008 15:48:08 +0000 (16:48 +0100)]
x86: rename LARGE_PAGE_SIZE to PMD_PAGE_SIZE
Fix up all users.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:07 +0000 (16:48 +0100)]
x86: cpa, fix lookup_address
lookup_address() returns a wrong level and a wrong pointer to a non
existing pte, when pmd or pud entries are marked !present. This
happens for example due to boot time mapping of GART into the low
memory space.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Mon, 4 Feb 2008 15:48:07 +0000 (16:48 +0100)]
x86: AMD Athlon X2 hard hang fix
An Athlon 64 X2 test system showed hard hangs shortly after marking
the kernel text read-only, if we tried to preserve largepages and
changed the PSE entry from RW to RO. The pagetable code itself is
correct, it's the CPU that locked up hard (and not even the NMI
watchdog could punch through that hard hang).
So be conservative and always do splitups - like we did in the past.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:07 +0000 (16:48 +0100)]
x86: cpa, preserve large pages if possible
When CPA is called on a range which fits into a large page mapping,
avoid to split the page when:
1) There is no change of attributes
2) The range to change is a complete large mapping
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:07 +0000 (16:48 +0100)]
x86: cpa, check if we changed anything and tlb flushing is necessary
Flush tlbs only when there was a real change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:07 +0000 (16:48 +0100)]
x86: introduce struct cpa_data
The number of arguments which need to be transported is increasing
and we want to add flush optimizations and large page preserving.
Create struct cpa data and pass a pointer instead of increasing the
number of arguments further.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Andi Kleen [Mon, 4 Feb 2008 15:48:06 +0000 (16:48 +0100)]
x86: cpa, only flush the cache if the caching attributes have changed
We only need to flush the caches in cpa() if the the caching attributes
have changed. Otherwise only flush the TLBs.
This checks the PAT bits too although they are currently not used by
the kernel.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:06 +0000 (16:48 +0100)]
x86: cpa, add the PAT bit defines
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:06 +0000 (16:48 +0100)]
x86: CPA return early when requested feature is not available
Mask out the not supported bits (e.g. NX). If the clr/set masks
are empty after the mask return without changing anything.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Huang, Ying [Mon, 4 Feb 2008 15:48:06 +0000 (16:48 +0100)]
x86: fix EFI mapping
The patch updates EFI runtime memory mapping code, by making EFI
areas explicitly executable.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: no CPA on iounmap
When an ioremap is unmapped, do not change the page attributes. There might
be another mapping of the same physical address. PAT might detect a conflicting
mapping attribute for no good reason. The mapping is removed anyway.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: ioremap remove the range check of cpa
Now that cpa works on non-direct mappings as well, we can safely
remove the range check in ioremap_change_attr().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: simplify __ioremap
Remove tons of castings which make the code hard to read.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: CPA use the existing pfn in split as well
When splitting large pages, we ge the pfn from the existing entry
instead of calculating it ourself.
This removes the last remaining range restriction of the cpa code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Arjan van de Ven [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: use the pfn from the page when change its attributes
When changing the attributes of a pte, we should use the PFN from the
existing PTE rather than going through hoops calculating what we think
it might have been; this is both fragile and totally unneeded. It also
makes it more hairy to call any of these functions on non-direct maps
for no good reason whatsover.
With this change, __change_page_attr() no longer takes a pfn as argument,
which simplifies all the callers.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@tglx.de>
Arjan van de Ven [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: teach the static_protection function about high mappings
Right now, enforcing that the high mapping of the kernel text doesn't
get the NX bit is done deep in the guts of CPA, rather than in the
static_protection() function that enforces all other per-arch sanity
checks.
This patch moves this sanity check into the central static_protection()
function instead, and makes it apply ONLY to the kernel text, not to all
other areas in the high mapping.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:05 +0000 (16:48 +0100)]
x86: add cpu mtrr init function definitions to mtrr.h
mtrr.h was included everywhere needed. Fixes the following sparse
warnings. Also, the return types in the extern definitions were
incorrect.
arch/x86/kernel/cpu/mtrr/amd.c:113:12: warning: symbol 'amd_init_mtrr' was not declared. Should it be static?
arch/x86/kernel/cpu/mtrr/cyrix.c:268:12: warning: symbol 'cyrix_init_mtrr' was not declared. Should it be static?
arch/x86/kernel/cpu/mtrr/centaur.c:218:12: warning: symbol 'centaur_init_mtrr' was not declared. Should it be static?
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:04 +0000 (16:48 +0100)]
x86: add cpu init function defintions to cpu.h
cpu.h was already included everywhere needed.
Fixes following sparse warnings:
arch/x86/kernel/cpu/amd.c:343:12: warning: symbol 'amd_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/cyrix.c:444:12: warning: symbol 'cyrix_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/cyrix.c:456:12: warning: symbol 'nsc_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/centaur.c:467:12: warning: symbol 'centaur_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/transmeta.c:112:12: warning: symbol 'transmeta_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/intel.c:296:12: warning: symbol 'intel_cpu_init' was not declared. Should it be static?
arch/x86/kernel/cpu/nexgen.c:56:12: warning: symbol 'nexgen_init_cpu' was not declared. Should it be static?
arch/x86/kernel/cpu/umc.c:22:12: warning: symbol 'umc_init_cpu' was not declared. Should it be static?
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:04 +0000 (16:48 +0100)]
x86: small sparse fix in process_32.c
arch/x86/kernel/process_32.c:254:43: warning: Using plain integer as NULL pointer
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:04 +0000 (16:48 +0100)]
x86: add function prototype to vm86.h
Global functions should include their prototypes.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:04 +0000 (16:48 +0100)]
x86: add include to cpu/intel.c
Fixes sparse warning:
arch/x86/kernel/cpu/intel.c:48:15: warning: symbol 'ppro_with_ram_bug' was not declared. Should it be static?
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Harvey Harrison [Mon, 4 Feb 2008 15:48:03 +0000 (16:48 +0100)]
x86: remove final FASTCALL() uses
A few snuck back in to x86.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:03 +0000 (16:48 +0100)]
x86: remove special NUMAQ support in io_32.h
Now that the only user does it on its own remove the NUMAQ support macros
in io_32.h
The next step would be to convert the preprocessor mess to actually readable
standard inlines.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Andi Kleen [Mon, 4 Feb 2008 15:48:03 +0000 (16:48 +0100)]
x86: move NUMAQ io handling into arch/x86/pci/numa.c
numa.c is the only user of the {in,out}*_quad functions. And it has only a few call
sites. Change them to open code the magic NUMAQ port access.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>