Commit Graph

263272 Commits

Author SHA1 Message Date
Christoph Lameter
3192b920bf slab, slub, slob: Unify alignment definition
Every slab has its on alignment definition in include/linux/sl?b_def.h. Extract those
and define a common set in include/linux/slab.h.

SLOB: As notes sometimes we need double word alignment on 32 bit. This gives all
structures allocated by SLOB a unsigned long long alignment like the others do.

SLAB: If ARCH_SLAB_MINALIGN is not set SLAB would set ARCH_SLAB_MINALIGN to
zero meaning no alignment at all. Give it the default unsigned long long alignment.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
2011-06-16 19:40:20 +03:00
Christoph Hellwig
a27a263bae xfs: make log devices with write back caches work
There's no reason not to support cache flushing on external log devices.
The only thing this really requires is flushing the data device first
both in fsync and log commits.  A side effect is that we also have to
remove the barrier write test during mount, which has been superflous
since the new FLUSH+FUA code anyway.  Also use the chance to flush the
RT subvolume write cache before the fsync commit, which is required
for correct semantics.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
2011-06-16 10:52:39 -05:00
David Howells
d6e43f751f AFS: Use i_generation not i_version for the vnode uniquifier
Store the AFS vnode uniquifier in the i_generation field, not the i_version
field of the inode struct.  i_version can then be given the AFS data version
number.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:44:48 -04:00
David Howells
2e41ae225f AFS: Set s_id in the superblock to the volume name
Set s_id in the superblock to the name of the AFS volume that this superblock
corresponds to.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:44:47 -04:00
Jan Kara
f9f07b6c13 vfs: Fix data corruption after failed write in __block_write_begin()
I've got a report of a file corruption from fsxlinux on ext3. The important
operations to the page were:
mapwrite to a hole
partial write to the page
read - found the page zeroed from the end of the normal write

The culprit seems to be that if get_block() fails in __block_write_begin()
(e.g. transient ENOSPC in ext3), the function does ClearPageUptodate(page).
Thus when we retry the write, the logic in __block_write_begin() thinks zeroing
of the page is needed and overwrites old data.  In fact, I don't see why we
should ever need to zero the uptodate bit here - either the page was uptodate
when we entered __block_write_begin() and it should stay so when we leave it,
or it was not uptodate and noone had right to set it uptodate during
__block_write_begin() so it remains !uptodate when we leave as well. So just
remove clearing of the bit.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:44:46 -04:00
Anton Blanchard
5e7f23373b afs: afs_fill_page reads too much, or wrong data
afs_fill_page should read the page that is about to be written but
the current implementation has a number of issues. If we aren't
extending the file we always read PAGE_CACHE_SIZE at offset 0. If we
are extending the file we try to read the entire file.

Change afs_fill_page to read PAGE_CACHE_SIZE at the right offset,
clamped to i_size.

While here, avoid calling afs_fill_page when we are doing a
PAGE_CACHE_SIZE write.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:44:46 -04:00
Julian Anastasov
42c1edd345 netfilter: nf_nat: avoid double seq_adjust for loopback
Avoid double seq adjustment for loopback traffic
because it causes silent repetition of TCP data. One
example is passive FTP with DNAT rule and difference in the
length of IP addresses.

	This patch adds check if packet is sent and
received via loopback device. As the same conntrack is
used both for outgoing and incoming direction, we restrict
seq adjustment to happen only in POSTROUTING.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-06-16 17:29:22 +02:00
Randy Dunlap
e1d76719ea staging: fix iio builds when IIO_RING_BUFFER is not enabled
Fix build by moving enum list outside of
#ifdef CONFIG_IIO_RING_BUFFER.

  drivers/staging/iio/accel/adis16201_core.c:413: error: 'ADIS16201_SCAN_SUPPLY' undeclared here (not in a function)
  drivers/staging/iio/accel/adis16201_core.c:417: error: 'ADIS16201_SCAN_TEMP' undeclared here (not in a function)
  ..

  drivers/staging/iio/accel/adis16203_core.c:374: error: 'ADIS16203_SCAN_SUPPLY' undeclared here (not in a function)
  drivers/staging/iio/accel/adis16203_core.c:378: error: 'ADIS16203_SCAN_AUX_ADC' undeclared here (not in a function)
  ..

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-16 08:29:00 -07:00
Al Viro
8aef188452 VFS: Fix vfsmount overput on simultaneous automount
[Kudos to dhowells for tracking that crap down]

If two processes attempt to cause automounting on the same mountpoint at the
same time, the vfsmount holding the mountpoint will be left with one too few
references on it, causing a BUG when the kernel tries to clean up.

The problem is that lock_mount() drops the caller's reference to the
mountpoint's vfsmount in the case where it finds something already mounted on
the mountpoint as it transits to the mounted filesystem and replaces path->mnt
with the new mountpoint vfsmount.

During a pathwalk, however, we don't take a reference on the vfsmount if it is
the same as the one in the nameidata struct, but do_add_mount() doesn't know
this.

The fix is to make sure we have a ref on the vfsmount of the mountpoint before
calling do_add_mount().  However, if lock_mount() doesn't transit, we're then
left with an extra ref on the mountpoint vfsmount which needs releasing.
We can handle that in follow_managed() by not making assumptions about what
we can and what we cannot get from lookup_mnt() as the current code does.

The callers of follow_managed() expect that reference to path->mnt will be
grabbed iff path->mnt has been changed.  follow_managed() and follow_automount()
keep track of whether such reference has been grabbed and assume that it'll
happen in those and only those cases that'll have us return with changed
path->mnt.  That assumption is almost correct - it breaks in case of
racing automounts and in even harder to hit race between following a mountpoint
and a couple of mount --move.  The thing is, we don't need to make that
assumption at all - after the end of loop in follow_manage() we can check
if path->mnt has ended up unchanged and do mntput() if needed.

The BUG can be reproduced with the following test program:

	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <sys/wait.h>
	int main(int argc, char **argv)
	{
		int pid, ws;
		struct stat buf;
		pid = fork();
		stat(argv[1], &buf);
		if (pid > 0) wait(&ws);
		return 0;
	}

and the following procedure:

 (1) Mount an NFS volume that on the server has something else mounted on a
     subdirectory.  For instance, I can mount / from my server:

	mount warthog:/ /mnt -t nfs4 -r

     On the server /data has another filesystem mounted on it, so NFS will see
     a change in FSID as it walks down the path, and will mark /mnt/data as
     being a mountpoint.  This will cause the automount code to be triggered.

     !!! Do not look inside the mounted fs at this point !!!

 (2) Run the above program on a file within the submount to generate two
     simultaneous automount requests:

	/tmp/forkstat /mnt/data/testfile

 (3) Unmount the automounted submount:

	umount /mnt/data

 (4) Unmount the original mount:

	umount /mnt

     At this point the kernel should throw a BUG with something like the
     following:

	BUG: Dentry ffff880032e3c5c0{i=2,n=} still in use (1) [unmount of nfs4 0:12]

Note that the bug appears on the root dentry of the original mount, not the
mountpoint and not the submount because sys_umount() hasn't got to its final
mntput_no_expire() yet, but this isn't so obvious from the call trace:

 [<ffffffff8117cd82>] shrink_dcache_for_umount+0x69/0x82
 [<ffffffff8116160e>] generic_shutdown_super+0x37/0x15b
 [<ffffffffa00fae56>] ? nfs_super_return_all_delegations+0x2e/0x1b1 [nfs]
 [<ffffffff811617f3>] kill_anon_super+0x1d/0x7e
 [<ffffffffa00d0be1>] nfs4_kill_super+0x60/0xb6 [nfs]
 [<ffffffff81161c17>] deactivate_locked_super+0x34/0x83
 [<ffffffff811629ff>] deactivate_super+0x6f/0x7b
 [<ffffffff81186261>] mntput_no_expire+0x18d/0x199
 [<ffffffff811862a8>] mntput+0x3b/0x44
 [<ffffffff81186d87>] release_mounts+0xa2/0xbf
 [<ffffffff811876af>] sys_umount+0x47a/0x4ba
 [<ffffffff8109e1ca>] ? trace_hardirqs_on_caller+0x1fd/0x22f
 [<ffffffff816ea86b>] system_call_fastpath+0x16/0x1b

as do_umount() is inlined.  However, you can see release_mounts() in there.

Note also that it may be necessary to have multiple CPU cores to be able to
trigger this bug.

Tested-by: Jeff Layton <jlayton@redhat.com>
Tested-by: Ian Kent <raven@themaw.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:28:16 -04:00
Török Edwin
50338b889d fix wrong iput on d_inode introduced by e6bc45d65d
Git bisection shows that commit e6bc45d65d causes
BUG_ONs under high I/O load:

kernel BUG at fs/inode.c:1368!
[ 2862.501007] Call Trace:
[ 2862.501007]  [<ffffffff811691d8>] d_kill+0xf8/0x140
[ 2862.501007]  [<ffffffff81169c19>] dput+0xc9/0x190
[ 2862.501007]  [<ffffffff8115577f>] fput+0x15f/0x210
[ 2862.501007]  [<ffffffff81152171>] filp_close+0x61/0x90
[ 2862.501007]  [<ffffffff81152251>] sys_close+0xb1/0x110
[ 2862.501007]  [<ffffffff814c14fb>] system_call_fastpath+0x16/0x1b

A reliable way to reproduce this bug is:
Login to KDE, run 'rsnapshot sync', and apt-get install openjdk-6-jdk,
and apt-get remove openjdk-6-jdk.

The buggy part of the patch is this:
	struct inode *inode = NULL;
.....
-               if (nd.last.name[nd.last.len])
-                       goto slashes;
                inode = dentry->d_inode;
-               if (inode)
-                       ihold(inode);
+               if (nd.last.name[nd.last.len] || !inode)
+                       goto slashes;
+               ihold(inode)
...
	if (inode)
		iput(inode);	/* truncate the inode here */

If nd.last.name[nd.last.len] is nonzero (and thus goto slashes branch is taken),
and dentry->d_inode is non-NULL, then this code now does an additional iput on
the inode, which is wrong.

Fix this by only setting the inode variable if nd.last.name[nd.last.len] is 0.

Reference: https://lkml.org/lkml/2011/6/15/50
Reported-by: Norbert Preining <preining@logic.at>
Reported-by: Török Edwin <edwintorok@gmail.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-16 11:27:39 -04:00
Nicolas Cavallari
2c38de4c1f netfilter: fix looped (broad|multi)cast's MAC handling
By default, when broadcast or multicast packet are sent from a local
application, they are sent to the interface then looped by the kernel
to other local applications, going throught netfilter hooks in the
process.

These looped packet have their MAC header removed from the skb by the
kernel looping code. This confuse various netfilter's netlink queue,
netlink log and the legacy ip_queue, because they try to extract a
hardware address from these packets, but extracts a part of the IP
header instead.

This patch prevent NFQUEUE, NFLOG and ip_QUEUE to include a MAC header
if there is none in the packet.

Signed-off-by: Nicolas Cavallari <cavallar@lri.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-06-16 17:27:04 +02:00
Patrick McHardy
db898aa2ef netfilter: ipt_ecn: fix inversion for IP header ECN match
Userspace allows to specify inversion for IP header ECN matches, the
kernel silently accepts it, but doesn't invert the match result.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-06-16 17:24:55 +02:00
Patrick McHardy
58d5a0257d netfilter: ipt_ecn: fix protocol check in ecn_mt_check()
Check for protocol inversion in ecn_mt_check() and remove the
unnecessary runtime check for IPPROTO_TCP in ecn_mt().

Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-06-16 17:24:17 +02:00
Borislav Petkov
40b7f3dfcc x86, microcode, AMD: Fix section header size check
The ucode size check has to take the section header size into account
too when sanity checking the section length. Shorten and clarify define
names, while at it.

Caught-by: Ben Hutchings <ben@decadent.org.uk>
Link: http://lkml.kernel.org/r/1302752223.5282.674.camel@localhost
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 17:23:54 +02:00
Sebastian Andrzej Siewior
63f6fe92c6 netfilter: ip_tables: fix compile with debug
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2011-06-16 17:16:37 +02:00
Patrick McHardy
122c4f10f7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-2.6 2011-06-16 17:09:54 +02:00
Patrick McHardy
619c15171f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next-2.6 2011-06-16 17:05:24 +02:00
Patrick McHardy
1f2d9c9dd8 Merge branch 'master' of /repos/git/net-next-2.6 2011-06-16 17:01:10 +02:00
Randy Dunlap
c001fb72a7 gpio: add GPIOF_ values regardless on kconfig settings
Make GPIOF_ defined values available even when GPIOLIB nor GENERIC_GPIO
is enabled by moving them to <linux/gpio.h>.

Fixes these build errors in linux-next:
sound/soc/codecs/ak4641.c:524: error: 'GPIOF_OUT_INIT_LOW' undeclared (first use in this function)
sound/soc/codecs/wm8915.c:2921: error: 'GPIOF_OUT_INIT_LOW' undeclared (first use in this function)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:40:52 -06:00
Randy Dunlap
158f1e9518 gpio: include linux/gpio.h where needed
Some files use GPIOF_ macros but don't include the header file
for them.  These macros are being moved to <linux/gpio.h>, so add
includes for <linux/gpio.h> where needed.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:40:44 -06:00
Ambresh K
55b220cafa gpio/omap4: Fix missing interrupts during device wakeup due to IOPAD.
If gpio pins from bank[2-5] are marked as wakeup enable and if the wake is
through gpio IO pad wakeup, then that wakeup gpio interrupt is lost.

In the current implementation, GPIO driver stores the context of DATAIN of
all the gpio in the bank. During GPIO resuming, it checks DATAIN with wakeup
enabled pins of gpio bank. If there is status change, then manually toggle
GPIO_LEVELDETECT to generate pseudo interrupt.

Reported-by: Philippe Mazet <p-mazet@ti.com>
Tested-by: Philippe Mazet <p-mazet@ti.com>
Signed-off-by: Ambresh K <ambresh@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:40:43 -06:00
Linus Walleij
78b2b911bf spi/pl022: strengthen FIFO watermark level checks
The platform configuration can select custom FIFO watermarks, but
these may conflict the actual FIFO size of the PL022 variant if
set too high. So strengthen the sanity checks to deny any
conflicting settings.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:27:05 -06:00
Rabin Vincent
bcda6ff8dd spi/pl022: support runtime PM
Insert notifiers for the runtime PM API. With this the runtime
PM layer kicks in to action where used.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Rebased to Linux 3.0-rc3, edit description]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:27:00 -06:00
Linus Walleij
083be3f053 spi/pl022: initialize burstsize from FIFO trigger level
Configure the DMA burstsize from the FIFO trigger level supplied
with the controller configuration data. This is based on a patch
from Virupax, but I rewrote it differently.

Reported-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16 08:26:58 -06:00
Tony Lindgren
741e3a89de omap: Use separate init_irq functions to avoid cpu_is_omap tests early
This allows us to remove cpu_is_omap calls from init_irq functions.
There should not be any need for cpu_is_omap calls as at this point.
During the timer init we only care about SoC generation, and not about
subrevisions.

The main reason for the patch is that we want to initialize only
minimal omap specific code from the init_early call.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-06-16 05:42:09 -07:00
Ingo Molnar
af07ce3e77 Merge branch 'tip/perf/core-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
Conflicts:
	Makefile
2011-06-16 13:26:23 +02:00
Ingo Molnar
b4f9f2b64a Merge commit 'v3.0-rc3' into perf/core
Merge reason: add the latest fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-16 13:23:22 +02:00
Barry Song
5d0e7f6170 ASoC: AD1836: rename suspend/resume funcs
Use less specific names for suspend/resume to match the probe/remove funcs
where these are now used.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Scott Jiang <scott.jiang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:42:10 +01:00
Mike Frysinger
0679059a41 ASoC: AD1836: fix codec name
The codec name should not have a "-codec" suffix since this is not part of
a MFD.  This was incorrectly changed during the multi-component updated.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:42:01 +01:00
Mike Frysinger
d4d80f5e46 ASoC: AD1836: fix intermixed tab/space indentation
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:41:53 +01:00
Mike Frysinger
15e8705129 ASoC: AD1836: drop unnecessary spi register check
The only thing the init func does is register a spi driver, so if that
fails, we return the value back up to the caller who will display an
error message for us.  So drop the redundant checking/message.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:41:46 +01:00
Mike Frysinger
42f32c5591 ASoC: AD1836: clean up comment headers
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:41:38 +01:00
Lars-Peter Clausen
53a93d58fb ASoC: Blackfin: Add bf5xx-adau1701 machine driver
Add a machine driver to support the ADAU1701 SigmaDSP processors on
Analog Devices BF5XX evaluation boards.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:24:25 +01:00
Lars-Peter Clausen
631ed8a213 ASoC: Add ADAU1701 codec driver
This patch adds support for the Analog Devices ADAU1701 SigmaDSP.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-16 11:24:17 +01:00
Mark Brown
b83e60c000 ASoC: Clean up some coding style nits in the bf5xx-i2s-pcm driver
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
2011-06-16 11:24:16 +01:00
Jiri Kosina
c3a4924565 Revert "HID: magicmouse: ignore 'ivalid report id' while switching modes"
This reverts commit 23746a66d7.

It turned out that the actual reason for failure is not the device
firmware, but bug in Bluetooth stack, which will be fixed by
patch by Ville Tervo which corrects the mask handling for CSR 1.1
Dongles.

Reported-and-tested-by: Ed Tomlinson <edt@aei.ca>
Reported-and-tested-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-16 12:21:34 +02:00
Hidetoshi Seto
c7cece89f1 x86, mce: Use mce_sysdev_ prefix to group functions
There are many functions named mce_* so use a new prefix for the subset
of functions related to sysfs support.

And since f3c6ea1b06 introduces
syscore_ops, use the prefix mce_syscore for some functions related to
power management which were in sysdev_class before.

  Before:			After:
   mce_device   		 mce_sysdev
   mce_sysclass 		 mce_sysdev_class
   mce_attrs    		 mce_sysdev_attrs
   mce_dev_initialized  	 mce_sysdev_initialized
   mce_create_device    	 mce_sysdev_create
   mce_remove_device    	 mce_sysdev_remove

   mce_suspend  		 mce_syscore_suspend
   mce_shutdown 		 mce_syscore_shutdown
   mce_resume   		 mce_syscore_resume

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED81B.8020506@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:16 +02:00
Hidetoshi Seto
93b62c3cf5 x86, mce: Use mce_chrdev_ prefix to group functions
There are many functions named mce_* so use a new prefix for the subset
of functions dealing with the character device /dev/mcelog.

This change doesn't impact the mce-inject module because the exported
symbol mce_chrdev_ops already has the prefix, therefore it is left
unchanged.

  Before:			After:
   mce_wait			 mce_chrdev_wait
   mce_state_lock		 mce_chrdev_state_lock
   open_count   		 mce_chrdev_open_count
   open_exclu   		 mce_chrdev_open_exclu
   mce_open			 mce_chrdev_open
   mce_release  		 mce_chrdev_release
   mce_read_mutex		 mce_chrdev_read_mutex
   mce_read			 mce_chrdev_read
   mce_poll			 mce_chrdev_poll
   mce_ioctl    		 mce_chrdev_ioctl
   mce_log_device		 mce_chrdev_device

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED7CD.3040500@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:15 +02:00
Hidetoshi Seto
559faa6be1 x86, mce: Cleanup mce_read()
Use a temporary local variable m to simplify the code. No change in
logic.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED7A8.8020307@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:13 +02:00
Hidetoshi Seto
f6783c4234 x86, mce: Cleanup mce_create()/remove_device()
Use temporary local variable sysdev to simplify the code. No change in
logic.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED777.7080205@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:12 +02:00
Hidetoshi Seto
3a97fc3413 x86, mce: Check the result of ancient_init()
Because "ancient CPUs" like p5 and winchip don't have X86_FEATURE_MCA
(I suppose so), mcheck_cpu_init() on such CPUs will return at check of
mce_available() after __mcheck_cpu_ancient_init().

It is hard to know this implicit behavior without knowing the CPUs
well. So make it clear that we leave mcheck_cpu_init() when the CPU is
initialized in __mcheck_cpu_ancient_init().

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED74B.20502@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:12 +02:00
Hidetoshi Seto
b8325c5b11 x86, mce: Introduce mce_gather_info()
This patch introduces mce_gather_info() which is to be called at the
beginning of error handling and gathers minimum error information from
proper error registers (and saved registers).

As the result of mce_get_rip() is integrated, unnecessary zeroing
is removed. This also takes care of saving RIP which is required to
make some decision about error severity for SRAR errors, instead of
retrieving it later in the handler.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED71A.1060906@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:10 +02:00
Hidetoshi Seto
2b90e77eae x86, mce: Replace MCM_ with MCI_MISC_
Follow other MCi register defines. Plus define MCI_MISC_ADDR_LSB() and
MCI_MISC_ADDR_MODE().

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED6E8.9090509@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:10 +02:00
Hidetoshi Seto
b77e70bf35 x86, mce: Replace MCE_SELF_VECTOR by irq_work
The MCE handler uses a special vector for self IPI to invoke
post-emergency processing in an interrupt context, e.g. call an
NMI-unsafe function, wakeup loggers, schedule time-consuming work for
recovery, etc.

This mechanism is now generalized by the following commit:

 > e360adbe29
 > Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
 > Date:   Thu Oct 14 14:01:34 2010 +0800
 >
 >  irq_work: Add generic hardirq context callbacks
 >
 >  Provide a mechanism that allows running code in IRQ context. It is
 >  most useful for NMI code that needs to interact with the rest of the
 >  system -- like wakeup a task to drain buffers.
 :

So change to use provided generic mechanism.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED6B2.6080005@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:08 +02:00
Hidetoshi Seto
7639bfc753 x86, mce, severity: Clean up trivial coding style problems
More specifically:

- sort bits in the macros
- use BITCLR/BITSET
- coordinate message pattern
- use m for struct mce
- cleanup for severities_debugfs_init()

No functional change.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED679.9090503@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:10:07 +02:00
Hidetoshi Seto
a17957cdec x86, mce, severity: Cleanup severity table
The current format of an item in this table is:
  condition(param, ..., level, message [, condition2 ...])

So we have to check both an item's head and tail to find the conditions
which match the item.

Format them in a more straight forward manner:
  item(level, message, condition [, condition2 ...])

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED61F.5010502@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 12:09:42 +02:00
Hidetoshi Seto
901d7691d3 x86, mce, severity: Make formatting a bit more readable
The table looks very complicated and hard to read for people other than
skilled developers. So let's clean it up a bit. At first, change format
to ease reading elements in the table.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/4DEED5EB.6050400@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 11:40:21 +02:00
Tony Luck
880a317abc x86, mce, severity: Fix two severities table signatures
The "Spurious not enabled" entry is redundant: the "Not enabled" entry
earlier in the table will cover this case.

The "Action required; unknown MCACOD" entry shouldn't specify MCACOD in
the .mask field. Current code will only match for mcacod==0 rather than
all AR=1 entries.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Link: http://lkml.kernel.org/r/4DEED5BC.8030703@jp.fujitsu.com
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-06-16 11:37:57 +02:00
Ryan Mallon
1c5454eed8 Change Ryan Mallon's email address across the kernel
I no longer work at Bluewater Systems. Update my email address accordingly. I
have deleted my email address from C files rather than change it. This
was suggested by several people, since the commit from my new email
address will cause scripts/get_maintainer.pl to function properly. I
have not added the .mailmap entry as suggested by Joe because I think
it is no longer necessary if I touch all the files which had my name
in them.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Cc: Andre Renaud <andre@bluewatersys.com>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Andrew Victor <avictor.za@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Joe Perches <joe@perches.com>
Cc: Jesper Juhl <jj@chaosbits.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: trivial@kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-16 11:22:05 +02:00
Jonathan Neuschäfer
df0a92c206 scripts/gcc-goto.sh: fix a typo ("suport")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-16 11:15:22 +02:00