openwrt/staging/blogic.git
15 years agoGFS2: Use DEFINE_SPINLOCK
Julia Lawall [Thu, 25 Dec 2008 14:35:27 +0000 (15:35 +0100)]
GFS2: Use DEFINE_SPINLOCK

SPIN_LOCK_UNLOCKED is deprecated.  The following makes the change suggested
in Documentation/spinlocks.txt

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
declarer name DEFINE_SPINLOCK;
identifier xxx_lock;
@@

- spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
+ DEFINE_SPINLOCK(xxx_lock);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix use-after-free bug on umount (try #2)
Steven Whitehouse [Fri, 19 Dec 2008 15:43:05 +0000 (15:43 +0000)]
GFS2: Fix use-after-free bug on umount (try #2)

This should solve the issue with the previous attempt at fixing this.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoRevert "GFS2: Fix use-after-free bug on umount"
Steven Whitehouse [Fri, 19 Dec 2008 15:32:06 +0000 (15:32 +0000)]
Revert "GFS2: Fix use-after-free bug on umount"

This reverts commit 78802499912f1ba31ce83a94c55b5a980f250a43.

The original patch is causing problems in relation to order of
operations at umount in relation to jdata files. I need to fix
this a different way.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Streamline alloc calculations for writes
Steven Whitehouse [Wed, 10 Dec 2008 10:28:10 +0000 (10:28 +0000)]
GFS2: Streamline alloc calculations for writes

This patch removes some unused code, and make the calculation
of the number of blocks required conditional in order to reduce
the number of times this (potentially expensive) calculation
is done.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Send useful information with uevent messages
Steven Whitehouse [Thu, 27 Nov 2008 09:42:51 +0000 (09:42 +0000)]
GFS2: Send useful information with uevent messages

In order to distinguish between two differing uevent messages
and to avoid using the (racy) method of reading status from
sysfs in future, this adds some status information to our
uevent messages.

Btw, before anybody says "sysfs isn't racy", I'm aware of that,
but the way that GFS2 was using it (send an ambiugous uevent and
then expect the receiver to read sysfs to find out the status
of the reported operation) was.

The additional benefit of using the new interface is that it
should be possible for a node to recover multiple journals
at the same time, since there is no longer any confusion as
to which journal the status belongs to.

At some future stage, when all the userland programs have been
converted, I intend to remove the old interface.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix use-after-free bug on umount
Steven Whitehouse [Thu, 27 Nov 2008 08:27:28 +0000 (08:27 +0000)]
GFS2: Fix use-after-free bug on umount

There was a use-after-free with the GFS2 super block during
umount. This patch moves almost all of the umount code from
->put_super into ->kill_sb, the only bit that cannot be moved
being the glock hash clearing which has to remain as ->put_super
due to umount ordering requirements. As a result its now obvious
that the kfree is the final operation, whereas before it was
hidden in ->put_super.

Also gfs2_jindex_free is then only referenced from a single file
so thats moved and marked static too.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Remove ancient, unused code
Steven Whitehouse [Wed, 26 Nov 2008 14:01:26 +0000 (14:01 +0000)]
GFS2: Remove ancient, unused code

Remove code that used to have something to do with initrd
but has been unused for a long time.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move four functions from super.c
Steven Whitehouse [Wed, 26 Nov 2008 13:30:49 +0000 (13:30 +0000)]
GFS2: Move four functions from super.c

The functions which are being moved can all be marked
static in their new locations, since they only have
a single caller each. Their new locations are more
logical than before and some of the functions are
small enough that the compiler might well inline them.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix bug in gfs2_lock_fs_check_clean()
Steven Whitehouse [Wed, 26 Nov 2008 12:49:26 +0000 (12:49 +0000)]
GFS2: Fix bug in gfs2_lock_fs_check_clean()

gfs2_lock_fs_check_clean() should not be calling gfs2_jindex_hold()
since it doesn't work like rindex hold, despite the comment. That
allows gfs2_jindex_hold() to be moved into ops_fstype.c where it
can be made static.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Send some sensible sysfs stuff
Steven Whitehouse [Wed, 26 Nov 2008 10:26:38 +0000 (10:26 +0000)]
GFS2: Send some sensible sysfs stuff

We ought to inform the user of the locktable and lockproto for each
uevent we generate.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Kill two daemons with one patch
Steven Whitehouse [Thu, 20 Nov 2008 13:39:47 +0000 (13:39 +0000)]
GFS2: Kill two daemons with one patch

This patch removes the two daemons, gfs2_scand and gfs2_glockd
and replaces them with a shrinker which is called from the VM.

The net result is that GFS2 responds better when there is memory
pressure, since it shrinks the glock cache at the same rate
as the VFS shrinks the dcache and icache. There are no longer
any time based criteria for shrinking glocks, they are kept
until such time as the VM asks for more memory and then we
demote just as many glocks as required.

There are potential future changes to this code, including the
possibility of sorting the glocks which are to be written back
into inode number order, to get a better I/O ordering. It would
be very useful to have an elevator based workqueue implementation
for this, as that would automatically deal with the read I/O cases
at the same time.

This patch is my answer to Andrew Morton's remark, made during
the initial review of GFS2, asking why GFS2 needs so many kernel
threads, the answer being that it doesn't :-) This patch is a
net loss of about 200 lines of code.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move gfs2_recoverd into recovery.c
Steven Whitehouse [Wed, 19 Nov 2008 10:08:22 +0000 (10:08 +0000)]
GFS2: Move gfs2_recoverd into recovery.c

By moving gfs2_recoverd, we can make an additional function static
and it also leaves only (the already scheduled for removal) gfs2_glockd
in daemon.c.

At the same time the declaration of gfs2_quotad is moved to quota.h
to reflect the new location of gfs2_quotad in a previous patch. Also
the recovery.h and quota.h headers are cleaned up.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix "truncate in progress" hang
Steven Whitehouse [Tue, 18 Nov 2008 13:38:48 +0000 (13:38 +0000)]
GFS2: Fix "truncate in progress" hang

Following on from the recent clean up of gfs2_quotad, this patch moves
the processing of "truncate in progress" inodes from the glock workqueue
into gfs2_quotad. This fixes a hang due to the "truncate in progress"
processing requiring glocks in order to complete.

It might seem odd to use gfs2_quotad for this particular item, but
we have to use a pre-existing thread since creating a thread implies
a GFP_KERNEL memory allocation which is not allowed from the glock
workqueue context. Of the existing threads, gfs2_logd and gfs2_recoverd
may deadlock if used for this operation. gfs2_scand and gfs2_glockd are
both scheduled for removal at some (hopefully not too distant) future
point. That leaves only gfs2_quotad whose workload is generally fairly
light and is easily adapted for this extra task.

Also, as a result of this change, it opens the way for a future patch to
make the reading of the inode's information asynchronous with respect to
the glock workqueue, which is another improvement that has been on the list
for some time now.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Clean up & move gfs2_quotad
Steven Whitehouse [Mon, 17 Nov 2008 14:25:37 +0000 (14:25 +0000)]
GFS2: Clean up & move gfs2_quotad

This patch is a clean up of gfs2_quotad prior to giving it an
extra job to do in addition to the current portfolio of updating
the quota and statfs information from time to time.

As a result it has been moved into quota.c allowing one of the
functions it calls to be made static. Also the clean up allows
the two existing functions to have separate timeouts and also
to coexist with its future role of dealing with the "truncate in
progress" inode flag.

The (pointless) setting of gfs2_quotad_secs is removed since we
arrange to only wake up quotad when one of the two timers expires.

In addition the struct gfs2_quota_data is moved into a slab cache,
mainly for easier debugging. It should also be possible to use
a shrinker in the future, rather than the current scheme of scanning
the quota data entries from time to time.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Add more detail to debugfs glock dumps
Steven Whitehouse [Mon, 10 Nov 2008 10:10:12 +0000 (10:10 +0000)]
GFS2: Add more detail to debugfs glock dumps

Although the glock dumps print quite a lot of information about
the glocks themselves, there are more things which can be
usefully added to the dump realting to the objects themselves.

This patch adds a few more fields to the inode and resource
group lines, which should be useful for debugging.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Banish struct gfs2_rgrpd_host
Steven Whitehouse [Tue, 4 Nov 2008 10:32:57 +0000 (10:32 +0000)]
GFS2: Banish struct gfs2_rgrpd_host

This patch moves the final field so that we can get rid
of struct gfs2_rgrpd_host, as promised some time ago. Also
by rearranging the fields slightly, we are able to reduce
the size of the gfs2_rgrpd structure at the same time.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd
Steven Whitehouse [Tue, 4 Nov 2008 10:25:13 +0000 (10:25 +0000)]
GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd

The second of three fields which need to move, in order
to remove the struct gfs2_rgrpd_host.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move rg_igeneration into struct gfs2_rgrpd
Steven Whitehouse [Tue, 4 Nov 2008 10:19:03 +0000 (10:19 +0000)]
GFS2: Move rg_igeneration into struct gfs2_rgrpd

This moves one of the fields of struct gfs2_rgrpd_host into
the struct gfs2_rgrpd with the eventual aim of removing
the struct rgrpd_host completely.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Banish struct gfs2_dinode_host
Steven Whitehouse [Tue, 4 Nov 2008 10:05:22 +0000 (10:05 +0000)]
GFS2: Banish struct gfs2_dinode_host

The final field in gfs2_dinode_host was the i_flags field. Thats
renamed to i_diskflags in order to avoid confusion with the existing
inode flags, and moved into the inode proper at a suitable location
to avoid creating a "hole".

At that point struct gfs2_dinode_host is no longer needed and as
promised (quite some time ago!) it can now be removed completely.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize
Steven Whitehouse [Tue, 4 Nov 2008 09:47:33 +0000 (09:47 +0000)]
GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize

This patch moved the i_size field from the gfs2_dinode_host and
following the ext3 convention renames it i_disksize.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move di_eattr into "proper" inode
Steven Whitehouse [Mon, 3 Nov 2008 14:28:42 +0000 (14:28 +0000)]
GFS2: Move di_eattr into "proper" inode

This moves the di_eattr field out of gfs2_inode_host and
into the inode proper.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move "entries" into "proper" inode
Steven Whitehouse [Mon, 3 Nov 2008 13:59:19 +0000 (13:59 +0000)]
GFS2: Move "entries" into "proper" inode

This moves the directory entry count into the proper inode.
Potentially we could get this to share the space used by
something else in the future, but this is one more step
on the way to removing the gfs2_dinode_host structure.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Move generation number into "proper" part of inode
Steven Whitehouse [Mon, 3 Nov 2008 13:39:46 +0000 (13:39 +0000)]
GFS2: Move generation number into "proper" part of inode

This moves the generation number from the gfs2_dinode_host
into the gfs2_inode structure. Eventually the plan is to get
rid of the gfs2_dinode_host structure completely.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: sparse annotation of gl->gl_spin
Harvey Harrison [Fri, 24 Oct 2008 18:31:12 +0000 (11:31 -0700)]
GFS2: sparse annotation of gl->gl_spin

fs/gfs2/glock.c:308:5: warning: context problem in 'do_promote': '_spin_unlock' expected different context
fs/gfs2/glock.c:308:5:    context '*gl+28': wanted >= 1, got 0
fs/gfs2/glock.c:529:2: warning: context problem in 'do_xmote': '_spin_unlock' expected different context
fs/gfs2/glock.c:529:2:    context '*gl+28': wanted >= 1, got 0
fs/gfs2/glock.c:925:3: warning: context problem in 'add_to_queue': '_spin_unlock' expected different context
fs/gfs2/glock.c:925:3:    context '*gl+28': wanted >= 1, got 0

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix up jdata writepage/delete_inode
Steven Whitehouse [Wed, 15 Oct 2008 08:46:39 +0000 (09:46 +0100)]
GFS2: Fix up jdata writepage/delete_inode

There is a bug in writepage and delete_inode which allows jdata files to
invalidate pages from the address space without being in a transaction at
the time. This causes problems in case the pages are in the journal. This
patch fixes that case and prevents the resulting oops.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Rationalise header files
Steven Whitehouse [Tue, 14 Oct 2008 15:05:55 +0000 (16:05 +0100)]
GFS2: Rationalise header files

Move the contents of some headers which contained very
little into more sensible places, and remove the original
header files. This should make it easier to find things.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Support for FIEMAP ioctl
Steven Whitehouse [Tue, 14 Oct 2008 13:43:29 +0000 (14:43 +0100)]
GFS2: Support for FIEMAP ioctl

This patch implements the FIEMAP ioctl for GFS2. We can use the generic
code (aside from a lock order issue, solved as per Ted Tso's suggestion)
for which I've introduced a new variant of the generic function. We also
have one exception to deal with, namely stuffed files, so we do that
"by hand", setting all the required flags.

This has been tested with a modified (I could only find an old version) of
Eric's test program, and appears to work correctly.

This patch does not currently support FIEMAP of xattrs, but the plan is to add
that feature at some future point.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Eric Sandeen <sandeen@redhat.com>
15 years agoMerge branch 'audit.b61' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit...
Linus Torvalds [Mon, 5 Jan 2009 00:32:11 +0000 (16:32 -0800)]
Merge branch 'audit.b61' of git://git./linux/kernel/git/viro/audit-current

* 'audit.b61' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  audit: validate comparison operations, store them in sane form
  clean up audit_rule_{add,del} a bit
  make sure that filterkey of task,always rules is reported
  audit rules ordering, part 2
  fixing audit rule ordering mess, part 1
  audit_update_lsm_rules() misses the audit_inode_hash[] ones
  sanitize audit_log_capset()
  sanitize audit_fd_pair()
  sanitize audit_mq_open()
  sanitize AUDIT_MQ_SENDRECV
  sanitize audit_mq_notify()
  sanitize audit_mq_getsetattr()
  sanitize audit_ipc_set_perm()
  sanitize audit_ipc_obj()
  sanitize audit_socketcall
  don't reallocate buffer in every audit_sockaddr()

15 years agortc: add alarm/update irq interfaces
Alessandro Zummo [Sun, 4 Jan 2009 20:00:54 +0000 (12:00 -0800)]
rtc: add alarm/update irq interfaces

Add standard interfaces for alarm/update irqs enabling.  Drivers are no
more required to implement equivalent ioctl code as rtc-dev will provide
it.

UIE emulation should now be handled correctly and will work even for those
RTC drivers who cannot be configured to do both UIE and AIE.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofs: symlink write_begin allocation context fix
Nick Piggin [Sun, 4 Jan 2009 20:00:53 +0000 (12:00 -0800)]
fs: symlink write_begin allocation context fix

With the write_begin/write_end aops, page_symlink was broken because it
could no longer pass a GFP_NOFS type mask into the point where the
allocations happened.  They are done in write_begin, which would always
assume that the filesystem can be entered from reclaim.  This bug could
cause filesystem deadlocks.

The funny thing with having a gfp_t mask there is that it doesn't really
allow the caller to arbitrarily tinker with the context in which it can be
called.  It couldn't ever be GFP_ATOMIC, for example, because it needs to
take the page lock.  The only thing any callers care about is __GFP_FS
anyway, so turn that into a single flag.

Add a new flag for write_begin, AOP_FLAG_NOFS.  Filesystems can now act on
this flag in their write_begin function.  Change __grab_cache_page to
accept a nofs argument as well, to honour that flag (while we're there,
change the name to grab_cache_page_write_begin which is more instructive
and does away with random leading underscores).

This is really a more flexible way to go in the end anyway -- if a
filesystem happens to want any extra allocations aside from the pagecache
ones in ints write_begin function, it may now use GFP_KERNEL (rather than
GFP_NOFS) for common case allocations (eg.  ocfs2_alloc_write_ctxt, for a
random example).

[kosaki.motohiro@jp.fujitsu.com: fix ubifs]
[kosaki.motohiro@jp.fujitsu.com: fix fuse]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Cleaned up the calling convention: just pass in the AOP flags
  untouched to the grab_cache_page_write_begin() function.  That
  just simplifies everybody, and may even allow future expansion of the
  logic.   - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoviafb: fix crashes due to 4k stack overflow
Bruno Prémont [Sun, 4 Jan 2009 21:11:54 +0000 (13:11 -0800)]
viafb: fix crashes due to 4k stack overflow

The function viafb_cursor() uses 2 stack-variables of CURSOR_SIZE bits;
CURSOR_SIZE is defined as (8 * 1024).  Using up twice 1k on stack is too
much for 4k-stack (though it works with 8k-stacks).  Make those two
variables kzalloc'ed to preserve stack space.

Also merge the whole lot of local struct's in viafb_ioctl into a union so
the stack usage gets minimized here as well.  (struct's are only accessed
in their indicidual IOCTL case) This second part is only compile-tested as
I know of no userspace app using the IOCTLs.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: <JosephChan@via.com.tw>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofs: introduce bgl_lock_ptr()
Pekka Enberg [Sun, 4 Jan 2009 20:00:48 +0000 (12:00 -0800)]
fs: introduce bgl_lock_ptr()

As suggested by Andreas Dilger, introduce a bgl_lock_ptr() helper in
<linux/blockgroup_lock.h> and add separate sb_bgl_lock() helpers to
filesystem specific header files to break the hidden dependency to
struct ext[234]_sb_info.

Also, while at it, convert the macros to static inlines to try make up
for all the times I broke Andrew Morton's tree.

Acked-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi.h uses/needs device.h
Randy Dunlap [Sun, 4 Jan 2009 20:00:47 +0000 (12:00 -0800)]
spi.h uses/needs device.h

Include header files as used/needed:

  In file included from drivers/leds/leds-dac124s085.c:16:
  include/linux/spi/spi.h:66: error: field 'dev' has incomplete type
  include/linux/spi/spi.h: In function 'to_spi_device':
  include/linux/spi/spi.h:100: warning: type defaults to 'int' in declaration of '__mptr'
  ...

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agovmalloc.c: fix flushing in vmap_page_range()
Adam Lackorzynski [Sun, 4 Jan 2009 20:00:46 +0000 (12:00 -0800)]
vmalloc.c: fix flushing in vmap_page_range()

The flush_cache_vmap in vmap_page_range() is called with the end of the
range twice.  The following patch fixes this for me.

Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agocgroups: fix a race between cgroup_clone and umount
Li Zefan [Sun, 4 Jan 2009 20:00:45 +0000 (12:00 -0800)]
cgroups: fix a race between cgroup_clone and umount

The race is calling cgroup_clone() while umounting the ns cgroup subsys,
and thus cgroup_clone() might access invalid cgroup_fs, or kill_sb() is
called after cgroup_clone() created a new dir in it.

The BUG I triggered is BUG_ON(root->number_of_cgroups != 1);

  ------------[ cut here ]------------
  kernel BUG at kernel/cgroup.c:1093!
  invalid opcode: 0000 [#1] SMP
  ...
  Process umount (pid: 5177, ti=e411e000 task=e40c4670 task.ti=e411e000)
  ...
  Call Trace:
   [<c0493df7>] ? deactivate_super+0x3f/0x51
   [<c04a3600>] ? mntput_no_expire+0xb3/0xdd
   [<c04a3ab2>] ? sys_umount+0x265/0x2ac
   [<c04a3b06>] ? sys_oldumount+0xd/0xf
   [<c0403911>] ? sysenter_do_call+0x12/0x31
  ...
  EIP: [<c0456e76>] cgroup_kill_sb+0x23/0xe0 SS:ESP 0068:e411ef2c
  ---[ end trace c766c1be3bf944ac ]---

Cc: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoaudit: validate comparison operations, store them in sane form
Al Viro [Tue, 16 Dec 2008 10:59:26 +0000 (05:59 -0500)]
audit: validate comparison operations, store them in sane form

Don't store the field->op in the messy (and very inconvenient for e.g.
audit_comparator()) form; translate to dense set of values and do full
validation of userland-submitted value while we are at it.

->audit_init_rule() and ->audit_match_rule() get new values now; in-tree
instances updated.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agoclean up audit_rule_{add,del} a bit
Al Viro [Mon, 15 Dec 2008 06:50:28 +0000 (01:50 -0500)]
clean up audit_rule_{add,del} a bit

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agomake sure that filterkey of task,always rules is reported
Al Viro [Tue, 16 Dec 2008 08:51:22 +0000 (03:51 -0500)]
make sure that filterkey of task,always rules is reported

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agoaudit rules ordering, part 2
Al Viro [Mon, 15 Dec 2008 06:17:50 +0000 (01:17 -0500)]
audit rules ordering, part 2

Fix the actual rule listing; add per-type lists _not_ used for matching,
with all exit,... sitting on one such list.  Simplifies "do something
for all rules" logics, while we are at it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agofixing audit rule ordering mess, part 1
Al Viro [Mon, 15 Dec 2008 04:45:27 +0000 (23:45 -0500)]
fixing audit rule ordering mess, part 1

Problem: ordering between the rules on exit chain is currently lost;
all watch and inode rules are listed after everything else _and_
exit,never on one kind doesn't stop exit,always on another from
being matched.

Solution: assign priorities to rules, keep track of the current
highest-priority matching rule and its result (always/never).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agoaudit_update_lsm_rules() misses the audit_inode_hash[] ones
Al Viro [Sun, 14 Dec 2008 17:04:02 +0000 (12:04 -0500)]
audit_update_lsm_rules() misses the audit_inode_hash[] ones

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_log_capset()
Al Viro [Sun, 4 Jan 2009 19:52:57 +0000 (14:52 -0500)]
sanitize audit_log_capset()

* no allocations
* return void
* don't duplicate checked for dummy context

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_fd_pair()
Al Viro [Sun, 14 Dec 2008 09:57:47 +0000 (04:57 -0500)]
sanitize audit_fd_pair()

* no allocations
* return void

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_mq_open()
Al Viro [Sun, 14 Dec 2008 09:02:26 +0000 (04:02 -0500)]
sanitize audit_mq_open()

* don't bother with allocations
* don't do double copy_from_user()
* don't duplicate parts of check for audit_dummy_context()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize AUDIT_MQ_SENDRECV
Al Viro [Sun, 14 Dec 2008 08:46:48 +0000 (03:46 -0500)]
sanitize AUDIT_MQ_SENDRECV

* logging the original value of *msg_prio in mq_timedreceive(2)
  is insane - the argument is write-only (i.e. syscall always
  ignores the original value and only overwrites it).
* merge __audit_mq_timed{send,receive}
* don't do copy_from_user() twice
* don't mess with allocations in auditsc part
* ... and don't bother checking !audit_enabled and !context in there -
  we'd already checked for audit_dummy_context().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_mq_notify()
Al Viro [Wed, 10 Dec 2008 12:16:12 +0000 (07:16 -0500)]
sanitize audit_mq_notify()

* don't copy_from_user() twice
* don't bother with allocations
* don't duplicate parts of audit_dummy_context()
* make it return void

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_mq_getsetattr()
Al Viro [Wed, 10 Dec 2008 11:58:59 +0000 (06:58 -0500)]
sanitize audit_mq_getsetattr()

* get rid of allocations
* make it return void
* don't duplicate parts of audit_dummy_context()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_ipc_set_perm()
Al Viro [Wed, 10 Dec 2008 08:47:15 +0000 (03:47 -0500)]
sanitize audit_ipc_set_perm()

* get rid of allocations
* make it return void
* simplify callers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_ipc_obj()
Al Viro [Wed, 10 Dec 2008 08:40:06 +0000 (03:40 -0500)]
sanitize audit_ipc_obj()

* get rid of allocations
* make it return void
* simplify callers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agosanitize audit_socketcall
Al Viro [Wed, 10 Dec 2008 08:16:51 +0000 (03:16 -0500)]
sanitize audit_socketcall

* don't bother with allocations
* now that it can't fail, make it return void

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agodon't reallocate buffer in every audit_sockaddr()
Al Viro [Wed, 10 Dec 2008 00:50:34 +0000 (19:50 -0500)]
don't reallocate buffer in every audit_sockaddr()

No need to do that more than once per process lifetime; allocating/freeing
on each sendto/accept/etc. is bloody pointless.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
15 years agoMerge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 3 Jan 2009 20:04:39 +0000 (12:04 -0800)]
Merge branch 'cpus4096-for-linus-3' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
  x86: setup_per_cpu_areas() cleanup
  cpumask: fix compile error when CONFIG_NR_CPUS is not defined
  cpumask: use alloc_cpumask_var_node where appropriate
  cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
  x86: use cpumask_var_t in acpi/boot.c
  x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
  sched: put back some stack hog changes that were undone in kernel/sched.c
  x86: enable cpus display of kernel_max and offlined cpus
  ia64: cpumask fix for is_affinity_mask_valid()
  cpumask: convert RCU implementations, fix
  xtensa: define __fls
  mn10300: define __fls
  m32r: define __fls
  h8300: define __fls
  frv: define __fls
  cris: define __fls
  cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
  cpumask: zero extra bits in alloc_cpumask_var_node
  cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
  cpumask: convert mm/
  ...

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux...
Linus Torvalds [Sat, 3 Jan 2009 20:03:52 +0000 (12:03 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/joro/linux-2.6-iommu

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu: (89 commits)
  AMD IOMMU: remove now unnecessary #ifdefs
  AMD IOMMU: prealloc_protection_domains should be static
  kvm/iommu: fix compile warning
  AMD IOMMU: add statistics about total number of map requests
  AMD IOMMU: add statistics about allocated io memory
  AMD IOMMU: add stats counter for domain tlb flushes
  AMD IOMMU: add stats counter for single iommu domain tlb flushes
  AMD IOMMU: add stats counter for cross-page request
  AMD IOMMU: add stats counter for free_coherent requests
  AMD IOMMU: add stats counter for alloc_coherent requests
  AMD IOMMU: add stats counter for unmap_sg requests
  AMD IOMMU: add stats counter for map_sg requests
  AMD IOMMU: add stats counter for unmap_single requests
  AMD IOMMU: add stats counter for map_single requests
  AMD IOMMU: add stats counter for completion wait events
  AMD IOMMU: add init code for statistic collection
  AMD IOMMU: add necessary header defines for stats counting
  AMD IOMMU: add Kconfig entry for statistic collection code
  AMD IOMMU: use dev_name in iommu_enable function
  AMD IOMMU: use calc_devid in prealloc_protection_domains
  ...

15 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Sat, 3 Jan 2009 20:02:18 +0000 (12:02 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (34 commits)
  V4L/DVB (10173): Missing v4l2_prio_close in radio_release
  V4L/DVB (10172): add DVB_DEVICE_TYPE= to uevent
  V4L/DVB (10171): Use usb_set_intfdata
  V4L/DVB (10170): tuner-simple: prevent possible OOPS caused by divide by zero error
  V4L/DVB (10168): sms1xxx: fix inverted gpio for lna control on tiger r2
  V4L/DVB (10167): sms1xxx: add support for inverted gpio
  V4L/DVB (10166): dvb frontend: stop using non-C99 compliant comments
  V4L/DVB (10165): Add FE_CAN_2G_MODULATION flag to frontends that support DVB-S2
  V4L/DVB (10164): Add missing S2 caps flag to S2API
  V4L/DVB (10163): em28xx: allocate adev together with struct em28xx dev
  V4L/DVB (10162): tuner-simple: Fix tuner type set message
  V4L/DVB (10161): saa7134: fix autodetection for AVer TV GO 007 FM Plus
  V4L/DVB (10160): em28xx: update chip id for em2710
  V4L/DVB (10157): Add USB ID for the Sil4701 radio from DealExtreme
  V4L/DVB (10156): saa7134: Add support for Avermedia AVer TV GO 007 FM Plus
  V4L/DVB (10155): Add TEA5764 radio driver
  V4L/DVB (10154): saa7134: fix a merge conflict on Behold H6 board
  V4L/DVB (10153): Add the Beholder H6 card to DVB-T part of sources.
  V4L/DVB (10152): Change configuration of the Beholder H6 card
  V4L/DVB (10151): Fix I2C bridge error in zl10353
  ...

15 years agosparseirq: move set/get_timer_rand_state back to .c
Yinghai Lu [Sat, 3 Jan 2009 08:06:34 +0000 (00:06 -0800)]
sparseirq: move set/get_timer_rand_state back to .c

those two functions only used in that C file

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
Linus Torvalds [Sat, 3 Jan 2009 20:00:07 +0000 (12:00 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: warn about voltage mismatches
  mmc_spi: Add support for OpenFirmware bindings
  pxamci: fix dma_unmap_sg length
  mmc_block: ensure all sectors that do not have errors are read
  drivers/mmc: Move a dereference below a NULL test
  sdhci: handle built-in sdhci with modular leds class
  mmc: balanc pci_iomap with pci_iounmap
  mmc_block: print better error messages
  mmc: Add mmc_vddrange_to_ocrmask() helper function
  ricoh_mmc: Handle newer models of Ricoh controllers
  mmc: Add 8-bit bus width support
  sdhci: activate led support also when module
  mmc: trivial annotation of 'blocks'
  pci: use pci_ioremap_bar() in drivers/mmc
  sdricoh_cs: Add support for Bay Controller devices
  mmc: at91_mci: reorder timer setup and mmc_add_host() call

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Sat, 3 Jan 2009 19:59:13 +0000 (11:59 -0800)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] Add support for the WM8350 watchdog
  [WATCHDOG] Add SMSC SCH311x Watchdog Timer.
  [WATCHDOG] ib700wdt - add timeout parameter

15 years agoMerge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Sat, 3 Jan 2009 19:56:24 +0000 (11:56 -0800)]
Merge branch 'cputime' of git://git390.osdl.marist.edu/linux-2.6

* 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [PATCH] fast vdso implementation for CLOCK_THREAD_CPUTIME_ID
  [PATCH] improve idle cputime accounting
  [PATCH] improve precision of idle time detection.
  [PATCH] improve precision of process accounting.
  [PATCH] idle cputime accounting
  [PATCH] fix scaled & unscaled cputime accounting

15 years agoMake %p print '(null)' for NULL pointers
Linus Torvalds [Sat, 3 Jan 2009 19:46:17 +0000 (11:46 -0800)]
Make %p print '(null)' for NULL pointers

Before, when we only ever printed out the pointer value itself, a NULL
pointer would never cause issues and might as well be printed out as
just its numeric value.

However, with the extended %p formats, especially %pR, we might validly
want to print out resources for debugging.  And sometimes they don't
even exist, and the resource pointer is just NULL.  Print it out as
such, rather than oopsing.

This is a more generic version of a patch done by Trent Piepho (catching
all %p cases rather than just %pR, and using "(null)" instead of
"[NULL]" to match glibc).

Requested-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoget rid of special-casing the /sbin/loader on alpha
Al Viro [Sat, 3 Jan 2009 07:16:33 +0000 (07:16 +0000)]
get rid of special-casing the /sbin/loader on alpha

... just make it a binfmt handler like #! one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosanitize ifdefs in binfmt_aout
Al Viro [Sat, 3 Jan 2009 07:16:23 +0000 (07:16 +0000)]
sanitize ifdefs in binfmt_aout

They are actually alpha vs.  i386/arm/m68k i.e. ecoff vs. aout.

In the only place where we actually tried to handle arm and i386/m68k in
different ways (START_DATA() in coredump handling), the arm variant
works for all of them (i386 and m68k have u.start_code set to 0).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoremove the rudiment of a.out for sparc
Al Viro [Sat, 3 Jan 2009 07:16:13 +0000 (07:16 +0000)]
remove the rudiment of a.out for sparc

it's been used only in sunos compat

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoUpdated contact info for CREDITS file
Hugh Blemings [Sat, 3 Jan 2009 05:48:44 +0000 (16:48 +1100)]
Updated contact info for CREDITS file

This updates some personal info in the CREDITS file.

I'm no longer actively involved in Keyspan driver work so shouldn't
really be listed as a Maintainer here.

I do however field the occasional question on them and as I'm dropping
the misc.nu domain, want to ensure people can find me should they need
to.

Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86: setup_per_cpu_areas() cleanup
Cyrill Gorcunov [Fri, 2 Jan 2009 18:51:32 +0000 (21:51 +0300)]
x86: setup_per_cpu_areas() cleanup

Impact: cleanup

__alloc_bootmem and __alloc_bootmem_node do panic
for us in case of fail so no need for additional
checks here.

Also lets use pr_*() macros for printing.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agocpumask: fix compile error when CONFIG_NR_CPUS is not defined
Mike Travis [Thu, 1 Jan 2009 02:08:48 +0000 (18:08 -0800)]
cpumask: fix compile error when CONFIG_NR_CPUS is not defined

CONFIG_NR_CPUS will be defined for all arch's whether SMP or not, but
it may not have made it into all arches yet.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agocpumask: use alloc_cpumask_var_node where appropriate
Mike Travis [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
cpumask: use alloc_cpumask_var_node where appropriate

Impact: Reduce inter-node memory traffic.

Reduces inter-node memory traffic (offloading the global system bus)
by allocating referenced struct cpumasks on the same node as the
referring struct.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agocpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
Rusty Russell [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t

Impact: Reduce memory usage, use new API.

This is part of an effort to reduce structure sizes for machines
configured with large NR_CPUS.  cpumask_t gets replaced by
cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or
struct cpumask * (large NR_CPUS).

(Changes to powernow-k* by <travis>.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: use cpumask_var_t in acpi/boot.c
Rusty Russell [Thu, 1 Jan 2009 02:08:47 +0000 (18:08 -0800)]
x86: use cpumask_var_t in acpi/boot.c

Impact: reduce stack size, use new API.

Replace cpumask_t with cpumask_var_t.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
Mike Travis [Thu, 1 Jan 2009 02:08:46 +0000 (18:08 -0800)]
x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids

Impact: Reduce future system panics due to cpumask operations using NR_CPUS

Insure that code does not look at bits >= nr_cpu_ids as when cpumasks are
allocated based on nr_cpu_ids, these extra bits will not be defined.

Also some other minor updates:

   * change in to use cpu accessor function set_cpu_present() instead of
     directly accessing cpu_present_map w/cpu_clear() [arch/x86/kernel/reboot.c]

   * use cpumask_of() instead of &cpumask_of_cpu() [arch/x86/kernel/reboot.c]

   * optimize some cpu_mask_to_apicid_and functions.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agosched: put back some stack hog changes that were undone in kernel/sched.c
Mike Travis [Thu, 1 Jan 2009 02:08:45 +0000 (18:08 -0800)]
sched: put back some stack hog changes that were undone in kernel/sched.c

Impact: prevents panic from stack overflow on numa-capable machines.

Some of the "removal of stack hogs" changes in kernel/sched.c by using
node_to_cpumask_ptr were undone by the early cpumask API updates, and
causes a panic due to stack overflow.  This patch undoes those changes
by using cpumask_of_node() which returns a 'const struct cpumask *'.

In addition, cpu_coregoup_map is replaced with cpu_coregroup_mask further
reducing stack usage.  (Both of these updates removed 9 FIXME's!)

Also:
   Pick up some remaining changes from the old 'cpumask_t' functions to
   the new 'struct cpumask *' functions.

   Optimize memory traffic by allocating each percpu local_cpu_mask on the
   same node as the referring cpu.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agox86: enable cpus display of kernel_max and offlined cpus
Mike Travis [Thu, 1 Jan 2009 02:08:45 +0000 (18:08 -0800)]
x86: enable cpus display of kernel_max and offlined cpus

Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface

By setting total_cpus, the drivers/base/cpu.c will display the
values of kernel_max (NR_CPUS-1) and the offlined cpu map.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoia64: cpumask fix for is_affinity_mask_valid()
Ingo Molnar [Sat, 3 Jan 2009 11:50:46 +0000 (12:50 +0100)]
ia64: cpumask fix for is_affinity_mask_valid()

Impact: build fix on ia64

ia64's default_affinity_write() still had old cpumask_t usage:

 /home/mingo/tip/kernel/irq/proc.c: In function `default_affinity_write':
 /home/mingo/tip/kernel/irq/proc.c:114: error: incompatible type for argument 1 of `is_affinity_mask_valid'
 make[3]: *** [kernel/irq/proc.o] Error 1
 make[3]: *** Waiting for unfinished jobs....

update it to cpumask_var_t.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agocpumask: convert RCU implementations, fix
Ingo Molnar [Sat, 3 Jan 2009 12:16:09 +0000 (13:16 +0100)]
cpumask: convert RCU implementations, fix

Impact: cleanup

This warning:

 kernel/rcuclassic.c: In function ‘rcu_start_batch’:
 kernel/rcuclassic.c:397: warning: passing argument 1 of ‘cpumask_andnot’ from incompatible pointer type

triggers because one usage site of rcp->cpumask was not converted
to to_cpumask(rcp->cpumask). There's no ill effects of this bug.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux...
Ingo Molnar [Sat, 3 Jan 2009 17:54:51 +0000 (18:54 +0100)]
Merge branch 'master' of git://git./linux/kernel/git/rusty/linux-2.6-cpumask into cpus4096-v2

15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux...
Mike Travis [Thu, 1 Jan 2009 01:34:16 +0000 (17:34 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask

Conflicts:
arch/x86/kernel/io_apic.c
kernel/rcuclassic.c
kernel/sched.c
kernel/time/tick-sched.c

Signed-off-by: Mike Travis <travis@sgi.com>
[ mingo@elte.hu: backmerged typo fix for io_apic.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
15 years agoAMD IOMMU: remove now unnecessary #ifdefs
Joerg Roedel [Sat, 3 Jan 2009 13:16:35 +0000 (14:16 +0100)]
AMD IOMMU: remove now unnecessary #ifdefs

The #ifdef's are no longer necessary when the iommu-api and the amd
iommu updates are merged together.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoMerge branches 'iommu/api' and 'iommu/amd' into for-linus
Joerg Roedel [Sat, 3 Jan 2009 15:43:44 +0000 (16:43 +0100)]
Merge branches 'iommu/api' and 'iommu/amd' into for-linus

15 years agoAMD IOMMU: prealloc_protection_domains should be static
Jaswinder Singh Rajput [Mon, 29 Dec 2008 16:15:22 +0000 (21:45 +0530)]
AMD IOMMU: prealloc_protection_domains should be static

Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/amd_iommu.c:1299:6: warning: symbol 'prealloc_protection_domains' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agokvm/iommu: fix compile warning
Joerg Roedel [Sat, 3 Jan 2009 15:37:53 +0000 (16:37 +0100)]
kvm/iommu: fix compile warning

This fixes a compile warning about a variable thats maybe used
uninitialized in the function.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add statistics about total number of map requests
Joerg Roedel [Fri, 12 Dec 2008 15:13:04 +0000 (16:13 +0100)]
AMD IOMMU: add statistics about total number of map requests

Impact: see total number of map requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add statistics about allocated io memory
Joerg Roedel [Fri, 12 Dec 2008 14:57:30 +0000 (15:57 +0100)]
AMD IOMMU: add statistics about allocated io memory

Impact: see amount of allocated io memory in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for domain tlb flushes
Joerg Roedel [Fri, 12 Dec 2008 14:48:28 +0000 (15:48 +0100)]
AMD IOMMU: add stats counter for domain tlb flushes

Impact: see number of domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for single iommu domain tlb flushes
Joerg Roedel [Fri, 12 Dec 2008 14:46:29 +0000 (15:46 +0100)]
AMD IOMMU: add stats counter for single iommu domain tlb flushes

Impact: see number of single iommu domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for cross-page request
Joerg Roedel [Fri, 12 Dec 2008 14:42:39 +0000 (15:42 +0100)]
AMD IOMMU: add stats counter for cross-page request

Impact: see number of requests for more than one page in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for free_coherent requests
Joerg Roedel [Fri, 12 Dec 2008 14:16:38 +0000 (15:16 +0100)]
AMD IOMMU: add stats counter for free_coherent requests

Impact: see number of free_coherent requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for alloc_coherent requests
Joerg Roedel [Fri, 12 Dec 2008 14:14:21 +0000 (15:14 +0100)]
AMD IOMMU: add stats counter for alloc_coherent requests

Impact: see number of alloc_coherent requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for unmap_sg requests
Joerg Roedel [Fri, 12 Dec 2008 14:12:14 +0000 (15:12 +0100)]
AMD IOMMU: add stats counter for unmap_sg requests

Impact: see number of unmap_sg requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for map_sg requests
Joerg Roedel [Fri, 12 Dec 2008 14:09:48 +0000 (15:09 +0100)]
AMD IOMMU: add stats counter for map_sg requests

Impact: see number of map_sg requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for unmap_single requests
Joerg Roedel [Fri, 12 Dec 2008 14:07:12 +0000 (15:07 +0100)]
AMD IOMMU: add stats counter for unmap_single requests

Impact: see number of unmap_single requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for map_single requests
Joerg Roedel [Fri, 12 Dec 2008 14:05:16 +0000 (15:05 +0100)]
AMD IOMMU: add stats counter for map_single requests

Impact: see number of map_single requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add stats counter for completion wait events
Joerg Roedel [Fri, 12 Dec 2008 13:59:58 +0000 (14:59 +0100)]
AMD IOMMU: add stats counter for completion wait events

Impact: see number of completion wait events in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add init code for statistic collection
Joerg Roedel [Fri, 12 Dec 2008 12:50:21 +0000 (13:50 +0100)]
AMD IOMMU: add init code for statistic collection

Impact: create a new debugfs directory

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add necessary header defines for stats counting
Joerg Roedel [Fri, 12 Dec 2008 11:33:06 +0000 (12:33 +0100)]
AMD IOMMU: add necessary header defines for stats counting

Impact: add defines to make iommu stats collection configurable

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: add Kconfig entry for statistic collection code
Joerg Roedel [Thu, 11 Dec 2008 18:00:12 +0000 (19:00 +0100)]
AMD IOMMU: add Kconfig entry for statistic collection code

Impact: adds new Kconfig entry

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: use dev_name in iommu_enable function
Joerg Roedel [Wed, 10 Dec 2008 19:04:18 +0000 (20:04 +0100)]
AMD IOMMU: use dev_name in iommu_enable function

Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: use calc_devid in prealloc_protection_domains
Joerg Roedel [Wed, 10 Dec 2008 19:01:45 +0000 (20:01 +0100)]
AMD IOMMU: use calc_devid in prealloc_protection_domains

Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: convert amd_iommu_isolate to bool
Joerg Roedel [Fri, 12 Dec 2008 12:53:54 +0000 (13:53 +0100)]
AMD IOMMU: convert amd_iommu_isolate to bool

Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: convert iommu->need_sync to bool
Joerg Roedel [Wed, 10 Dec 2008 18:58:00 +0000 (19:58 +0100)]
AMD IOMMU: convert iommu->need_sync to bool

Impact: use bool instead of int for iommu->need_sync

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: use dev_name instead of self-build print_devid
Joerg Roedel [Wed, 10 Dec 2008 18:43:07 +0000 (19:43 +0100)]
AMD IOMMU: use dev_name instead of self-build print_devid

Impact: use generic dev_name instead of own function

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAMD IOMMU: allocate a new protection for hotplugged devices
Joerg Roedel [Wed, 10 Dec 2008 18:33:26 +0000 (19:33 +0100)]
AMD IOMMU: allocate a new protection for hotplugged devices

Impact: also hotplug devices benefit from device isolation

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>