deliverable/linux.git
14 years agoInput: ucb1400_ts - enable interrupt unconditionally
Pavel Revak [Fri, 21 Aug 2009 05:30:54 +0000 (22:30 -0700)] 
Input: ucb1400_ts - enable interrupt unconditionally

Sometimes, when using the touchscreen, it stops working till next restart
and the following message is printed:

ucb1400: unexpected IE_STATUS = 0x0

The following patch retriggers the touchscreen interrupt unconditionally.
This prevents hanging of the touchscreen in case of bogus interrupt
occurence.

Signed-off-by: Pavel Revak <palo@bielyvlk.sk>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agoInput: ucb1400_ts - enable ADC Filter
Marek Vasut [Fri, 21 Aug 2009 05:05:53 +0000 (22:05 -0700)] 
Input: ucb1400_ts - enable ADC Filter

This patch enables ADC filtering on UCB1400 codec by default. The
benefit from this change is mostly on some Colibri boards where
the ADCSYNC pin of the UCB1400 codec isn't connected causing the
touchscreen to jitter very badly. This change has no visible
effect on boards where the ADCSYNC pin is connected.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Palo Revak <palo@bielyvlk.sk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agoInput: wacom - don't use on-stack memory for report buffers
Dmitry Torokhov [Fri, 21 Aug 2009 04:41:04 +0000 (21:41 -0700)] 
Input: wacom - don't use on-stack memory for report buffers

Tested-by: Martin Capitanio <martin@capitanio.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agoocfs2/dlm: Wait on lockres instead of erroring cancel requests
Goldwyn Rodrigues [Thu, 20 Aug 2009 18:43:19 +0000 (13:43 -0500)] 
ocfs2/dlm: Wait on lockres instead of erroring cancel requests

In case a downconvert is queued, and a flock receives a signal,
BUG_ON(lockres->l_action != OCFS2_AST_INVALID) is triggered
because a lock cancel triggers a dlmunlock while an AST is
scheduled.

To avoid this, allow a LKM_CANCEL to pass through, and let it
wait on __dlm_wait_on_lockres().

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
Acked-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agodrm/radeon/kms: add r100/r200 OQ support.
Dave Airlie [Fri, 21 Aug 2009 00:07:54 +0000 (10:07 +1000)] 
drm/radeon/kms: add r100/r200 OQ support.

This adds the relocation necessary for OQ support on the r100/r200
chipsets.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm: Fix sysfs device confusion.
Thomas Hellstrom [Thu, 20 Aug 2009 09:02:31 +0000 (19:02 +1000)] 
drm: Fix sysfs device confusion.

The drm sysfs class suspend / resume methods could not distinguish
between different device types wich could lead to illegal type casts.

Use struct device_type and make sure the class suspend / resume callbacks
are aware of those. There is no per device-type suspend / resume. Only
new-style PM.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: implement the bo busy ioctl properly.
Dave Airlie [Thu, 20 Aug 2009 23:47:45 +0000 (09:47 +1000)] 
drm/radeon/kms: implement the bo busy ioctl properly.

The previous patch assumes the ioctl already existed, when
it actually didn't.

It also didn't return the correct error code.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoocfs2: Add missing lock name
Jan Kara [Thu, 20 Aug 2009 16:26:52 +0000 (18:26 +0200)] 
ocfs2: Add missing lock name

There is missing name for NFSSync cluster lock. This makes lockdep unhappy
because we end up passing NULL to lockdep when initializing lock key. Fix it.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agox86: add vmlinux.lds to targets in arch/x86/boot/compressed/Makefile
Jan Beulich [Thu, 20 Aug 2009 15:14:15 +0000 (16:14 +0100)] 
x86: add vmlinux.lds to targets in arch/x86/boot/compressed/Makefile

The absence of vmlinux.lds here keeps .vmlinux.lds.cmd from being
included, which in turn leads to it and all its dependents always
getting rebuilt independent of whether they are already up-to-date.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4A8D84670200007800010D31@vpn.id2.novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agoMerge branch 'i2c-fixes-rc6' of git://aeryn.fluff.org.uk/bjdooks/linux
Linus Torvalds [Thu, 20 Aug 2009 21:55:24 +0000 (14:55 -0700)] 
Merge branch 'i2c-fixes-rc6' of git://aeryn.fluff.org.uk/bjdooks/linux

* 'i2c-fixes-rc6' of git://aeryn.fluff.org.uk/bjdooks/linux:
  i2c-stu300: I2C STU300 stability updates
  i2c-omap: Enable workaround for Errata 1.153 based on
  i2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts
  i2c-omap: Fix I2C status ACK

14 years agoi2c-stu300: I2C STU300 stability updates
Linus Walleij [Thu, 13 Aug 2009 20:14:23 +0000 (22:14 +0200)] 
i2c-stu300: I2C STU300 stability updates

- blk clk is enabled when an irq arrives. The clk should be enabled,
  but just to make sure.
- All error bits are handled no matter state machine state
- All irq's will run complete() except for irq's that wasn't an event.
- No more looking into status registers just in case an interrupt
  has happend and the irq handle wasn't executed.
- irq_disable/enable are now separete functions.
- clk settings calculation changed to round upwards instead of
  downwards.
- Number of address send attempts before giving up is increased to 12
  from 10 since it most times take 8 tries before getting through.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoi2c-omap: Enable workaround for Errata 1.153 based on
Moiz Sonasath [Thu, 20 Aug 2009 16:21:16 +0000 (11:21 -0500)] 
i2c-omap: Enable workaround for Errata 1.153 based on

Silicon Errata 1.153 has been fixed on OMAP 3630|4430 with the use of a later
version of I2C IP block.

The errata impacts OMAP 2420|2430|3430, enable the workaround for these based
on I2C IP block revision number instead of OMAP CPU type

Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoi2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts
Moiz Sonasath [Thu, 20 Aug 2009 16:21:15 +0000 (11:21 -0500)] 
i2c-omap: ACK pending [R/X]DR and [R/X]RDY interrupts

ACK any pending read/write interrupts before exiting the ISR either after
completing the operation [ARDY interrupt] or in case of an error
[NACK|AL interrupt]

Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoi2c-omap: Fix I2C status ACK
Nishanth Menon [Thu, 20 Aug 2009 16:21:14 +0000 (11:21 -0500)] 
i2c-omap: Fix I2C status ACK

I2C status ack for [RX]RDR and [RX]RDY could
cause race conditions of clearing the event
twice and a violation of the programing
sequence as defined in TRM This patch fixes
the same.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
14 years agoMerge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Thu, 20 Aug 2009 17:19:39 +0000 (10:19 -0700)] 
Merge branch 'fix/hda' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix probe of Toshiba laptops with ALC268 codec
  ALSA: hda: add model for Intel DG45ID/DG45FC boards
  ALSA: hda: enable speaker output for Compaq 6530s/6531s

14 years agoPCI: check saved state before restore
Alek Du [Sat, 8 Aug 2009 00:46:19 +0000 (08:46 +0800)] 
PCI: check saved state before restore

Without the check, the config space may be filled with zeros. Though
the driver should try to avoid call restoring before saving, but the
pci layer also should check this.

Also removes the existing check in pci_restore_standard_config, since
it's superfluous with the new check in restore_state.

Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoMerge branch 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen...
Ingo Molnar [Thu, 20 Aug 2009 10:05:24 +0000 (12:05 +0200)] 
Merge branch 'bugfix' of git://git./linux/kernel/git/jeremy/xen into x86/urgent

14 years agoibm_newemac: emac_close() needs to call netif_carrier_off()
Petri Gynther [Thu, 20 Aug 2009 09:21:27 +0000 (02:21 -0700)] 
ibm_newemac: emac_close() needs to call netif_carrier_off()

When ibm_newemac netdev instance is shutdown with "ifconfig down",
the netdev interface does not go properly down. netif_carrier_ok()
keeps returning TRUE even after "ifconfig down".

The problem can be seen when ibm_newemac instances are slaves of
a bonding interface. The bonding interface code uses netif_carrier_ok()
to determine the link status of its slaves. When ibm_newemac slave is
shutdown with "ifconfig down", the bonding interface won't detect any
link status change because netif_carrier_ok() keeps returning TRUE.

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoInput: iforce - support new revision of ACT LABS Force RS
Jiri Kosina [Thu, 20 Aug 2009 05:07:44 +0000 (22:07 -0700)] 
Input: iforce - support new revision of ACT LABS Force RS

Reported-by: cemede@gmail.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
14 years agoxen: rearrange things to fix stackprotector
Jeremy Fitzhardinge [Mon, 17 Aug 2009 19:26:53 +0000 (12:26 -0700)] 
xen: rearrange things to fix stackprotector

Make sure the stack-protector segment registers are properly set up
before calling any functions which may have stack-protection compiled
into them.

[ Impact: prevent Xen early-boot crash when stack-protector is enabled ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agox86: make sure load_percpu_segment has no stackprotector
Jeremy Fitzhardinge [Mon, 17 Aug 2009 19:25:41 +0000 (12:25 -0700)] 
x86: make sure load_percpu_segment has no stackprotector

load_percpu_segment() is used to set up the per-cpu segment registers,
which are also used for -fstack-protector.  Make sure that the
load_percpu_segment() function doesn't have stackprotector enabled.

[ Impact: allow percpu setup before calling stack-protected functions ]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agonet: fix ks8851 build errors
Randy Dunlap [Wed, 19 Aug 2009 19:13:31 +0000 (12:13 -0700)] 
net: fix ks8851 build errors

Fix build errors due to missing Kconfig select of CRC32:

ks8851.c:(.text+0x7d2ee): undefined reference to `crc32_le'
ks8851.c:(.text+0x7d2f5): undefined reference to `bitrev32'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoALSA: hda - Fix probe of Toshiba laptops with ALC268 codec
Takashi Iwai [Wed, 19 Aug 2009 18:05:02 +0000 (20:05 +0200)] 
ALSA: hda - Fix probe of Toshiba laptops with ALC268 codec

There are many variants of Toshiba laptops with ALC268 codec, and
it seems that a few of them don't work with model=toshiba preset
since they have the secondary ALC268 codec just for HDMI output.
This is a regression due to the previous clean-up work to merge all
Toshiba quirk entries into a single check.

This patch adds the identification of such laptops to apply the
standard BIOS-probing method.  Unfortunately, Toshiba laptops have
all the same PCI SSID, so we need to check the codec SSID to identify
each device.

Tested-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Wed, 19 Aug 2009 17:40:24 +0000 (10:40 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix oopses with doubly mounted snapshots
  nilfs2: missing a read lock for segment writer in nilfs_attach_checkpoint()

14 years agoAFS: Documentation updates
Anton Blanchard [Wed, 19 Aug 2009 15:10:16 +0000 (16:10 +0100)] 
AFS: Documentation updates

Fix some issues with the AFS documentation, found when testing AFS on ppc64:

- Update AFS features: reading/writing, local caching
- Typo in kafs sysfs debug file
- Use modprobe instead of insmod in example
- Update IPs for grand.central.org

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 19 Aug 2009 17:38:36 +0000 (10:38 -0700)] 
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/kms: teardown crtc correctly when fb is destroyed.
  drm/kms/radeon: cleanup combios TV table like DDX.
  drm/radeon/kms: memset the allocated framebuffer before using it.
  drm/radeon/kms: although LVDS might be possible on crtc 1 don't do it.
  drm/radeon/kms: implement bo busy check + current domain
  drm/radeon/kms: cut down indirects in register accesses.
  drm/radeon/kms: Fix up vertical blank interrupt support.
  drm/radeon/kms: add rv530 R300_SU_REG_DEST + reloc for ZPASS_ADDR
  drm/edid: fixup detailed timings like the X server.
  drm/radeon/kms: Add specific rs690 authorized register table

14 years agoMerge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Wed, 19 Aug 2009 16:44:51 +0000 (09:44 -0700)] 
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Update Microblaze defconfigs
  microblaze: Use klimit instead of _end for memory init
  microblaze: Enable ppoll syscall
  microblaze: Sane handling of missing timer/intc in device tree
  microblaze: use the generic ack_bad_irq implementation

14 years agoMerge branch 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Wed, 19 Aug 2009 16:43:19 +0000 (09:43 -0700)] 
Merge branch 'perfcounters-fixes-for-linus-2' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perfcounters-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Make 'make html' work
  perf annotate: Fix segmentation fault
  perf_counter: Fix the PARISC build
  perf_counter: Check task on counter read IPI
  perf: Rename perf-examples.txt to examples.txt
  perf record: Fix typo in pid_synthesize_comm_event

14 years agoclockevent: Prevent dead lock on clockevents_lock
Suresh Siddha [Mon, 17 Aug 2009 21:34:59 +0000 (14:34 -0700)] 
clockevent: Prevent dead lock on clockevents_lock

Currently clockevents_notify() is called with interrupts enabled at
some places and interrupts disabled at some other places.

This results in a deadlock in this scenario.

cpu A holds clockevents_lock in clockevents_notify() with irqs enabled
cpu B waits for clockevents_lock in clockevents_notify() with irqs disabled
cpu C doing set_mtrr() which will try to rendezvous of all the cpus.

This will result in C and A come to the rendezvous point and waiting
for B. B is stuck forever waiting for the spinlock and thus not
reaching the rendezvous point.

Fix the clockevents code so that clockevents_lock is taken with
interrupts disabled and thus avoid the above deadlock.

Also call lapic_timer_propagate_broadcast() on the destination cpu so
that we avoid calling smp_call_function() in the clockevents notifier
chain.

This issue left us wondering if we need to change the MTRR rendezvous
logic to use stop machine logic (instead of smp_call_function) or add
a check in spinlock debug code to see if there are other spinlocks
which gets taken under both interrupts enabled/disabled conditions.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: "Pallipadi Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: "Brown Len" <len.brown@intel.com>
LKML-Reference: <1250544899.2709.210.camel@sbs-t61.sc.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
14 years agoperf tools: Check perf.data owner
Peter Zijlstra [Wed, 19 Aug 2009 09:18:26 +0000 (11:18 +0200)] 
perf tools: Check perf.data owner

Add an owner check to opening perf.data files and a switch to
silence it.

Because perf-report/perf-annotate are binary parsers reading
another users' perf.data file could be a security risk if the
file were explicitly engineered to trigger bugs in the parser
(we hope of course there are non such bugs, but you never
know).

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20090819092023.896648538@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoALSA: hda: add model for Intel DG45ID/DG45FC boards
Wu Fengguang [Wed, 19 Aug 2009 09:05:11 +0000 (17:05 +0800)] 
ALSA: hda: add model for Intel DG45ID/DG45FC boards

The BIOS pin configs are in fact correct and shall not be overwritten.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda: enable speaker output for Compaq 6530s/6531s
Wu Fengguang [Wed, 19 Aug 2009 08:58:59 +0000 (16:58 +0800)] 
ALSA: hda: enable speaker output for Compaq 6530s/6531s

HP Compaq 6530s and 6531s internal speaker is silence or becomes silence
within 1 minute after fresh boot. It is found that pin 0x1c must be set to
PIN_OUT mode to make the speaker work. This is weird - line-in pin 0x1c and
speaker pin 0x16 seem to be unrelated.

The codec differences before/after patch are:

@@ Node 0x17 [Pin Complex] wcaps 0x40020b:
   Pin Default 0x41a6e130: [N/A] Mic at Ext Rear
     Conn = Digital, Color = White
     DefAssociation = 0x3, Sequence = 0x0
     Misc = NO_PRESENCE
-  Pin-ctls: 0x24: IN
+  Pin-ctls: 0x40: OUT
@@ Node 0x1c [Pin Complex] wcaps 0x40018d:
   Pin Default 0x41813021: [N/A] Line In at Ext Rear
     Conn = 1/8, Color = Blue
     DefAssociation = 0x2, Sequence = 0x1
-  Pin-ctls: 0x24: IN VREF_80
+  Pin-ctls: 0x40: OUT VREF_HIZ
   Unsolicited: tag=00, enabled=0
   Connection: 1
      0x24

Tests show that it won't impact (external) Mic recording.

Reported-by: "Lin, Ming M" <ming.m.lin@intel.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agosparc64: Update defconfig.
David S. Miller [Wed, 19 Aug 2009 06:56:21 +0000 (23:56 -0700)] 
sparc64: Update defconfig.

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosparc32: Update defconfig.
David S. Miller [Wed, 19 Aug 2009 06:46:12 +0000 (23:46 -0700)] 
sparc32: Update defconfig.

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosparc32: Kill trap table freeing code.
David S. Miller [Wed, 19 Aug 2009 06:44:08 +0000 (23:44 -0700)] 
sparc32: Kill trap table freeing code.

Normally, srmmu uses different trap table register values to allow
determination of the cpu we're on.  All of the trap tables have
identical content, they just sit at different offsets from the first
trap table, and the offset shifted down and masked out determines
the cpu we are on.

The code tries to free them up when they aren't actually used
(don't have all 4 cpus, we're on sun4d, etc.) but that causes
problems.

For one thing it triggers false positives in the DMA debugging
code.  And fixing that up while preserving this relative offset
thing isn't trivial.

So just kill the freeing code, it costs us at most 3 pages, big
deal...

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: Rename MAC platform driver for w90p910 platform
Wan ZongShun [Wed, 19 Aug 2009 06:34:58 +0000 (23:34 -0700)] 
net: Rename MAC platform driver for w90p910 platform

Due to I modified the corresponding platform device name,
so I make the patch to rename MAC platform driver
for w90p910 platform.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agodrm/kms: teardown crtc correctly when fb is destroyed.
Dave Airlie [Mon, 17 Aug 2009 03:11:23 +0000 (13:11 +1000)] 
drm/kms: teardown crtc correctly when fb is destroyed.

If userspace destroys a framebuffer that is in use on a crtc,
don't just null it out, tear down the crtc properly so the
hw gets turned off.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/kms/radeon: cleanup combios TV table like DDX.
Dave Airlie [Mon, 17 Aug 2009 00:19:51 +0000 (10:19 +1000)] 
drm/kms/radeon: cleanup combios TV table like DDX.

The fallback case wasn't getting executed properly if there
was no TV table, which my T42 M7 hasn't got.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: memset the allocated framebuffer before using it.
Dave Airlie [Mon, 17 Aug 2009 00:20:47 +0000 (10:20 +1000)] 
drm/radeon/kms: memset the allocated framebuffer before using it.

This gets rid of some ugliness, we shuold probably find a way
for the GPU to zero this.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: although LVDS might be possible on crtc 1 don't do it.
Dave Airlie [Mon, 17 Aug 2009 00:22:37 +0000 (10:22 +1000)] 
drm/radeon/kms: although LVDS might be possible on crtc 1 don't do it.

LVDS always requests RMX_FULL, we need to fix it so that doesn't happen
before we can enable LVDS on crtc 1.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoyellowfin: Fix buffer underrun after dev_alloc_skb() failure
Roel Kluin [Wed, 19 Aug 2009 03:21:40 +0000 (20:21 -0700)] 
yellowfin: Fix buffer underrun after dev_alloc_skb() failure

yellowfin_init_ring() needs to clean up if dev_alloc_skb() fails and
should pass an error status up to the caller. This also prevents an
buffer underrun if failure occurred in the first iteration.
yellowfin_open() which calls yellowfin_init_ring() should free its
requested irq upon failure.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosparc: sys32.S incorrect compat-layer splice() system call
Mathieu Desnoyers [Wed, 19 Aug 2009 03:16:55 +0000 (20:16 -0700)] 
sparc: sys32.S incorrect compat-layer splice() system call

I think arch/sparc/kernel/sys32.S has an incorrect splice definition:

SIGN2(sys32_splice, sys_splice, %o0, %o1)

The splice() prototype looks like :

       long splice(int fd_in, loff_t *off_in, int fd_out,
                   loff_t *off_out, size_t len, unsigned int flags);

So I think we should have :

SIGN2(sys32_splice, sys_splice, %o0, %o2)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Wed, 19 Aug 2009 02:41:47 +0000 (19:41 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  security: Fix prompt for LSM_MMAP_MIN_ADDR
  security: Make LSM_MMAP_MIN_ADDR default match its help text.

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Linus Torvalds [Wed, 19 Aug 2009 02:41:05 +0000 (19:41 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/tj/percpu

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: use the right flag for get_vm_area()
  percpu, sparc64: fix sparse possible cpu map handling
  init: set nr_cpu_ids before setup_per_cpu_areas()

14 years agotracing: handle broken names in ftrace filter
Jiri Olsa [Tue, 11 Aug 2009 15:29:04 +0000 (17:29 +0200)] 
tracing: handle broken names in ftrace filter

If one filter item (for set_ftrace_filter and set_ftrace_notrace) is being
setup by more than 1 consecutive writes (FTRACE_ITER_CONT flag), it won't
be handled corretly.

I used following program to test/verify:

[snip]
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>

int main(int argc, char **argv)
{
        int fd, i;
        char *file = argv[1];

        if (-1 == (fd = open(file, O_WRONLY))) {
                perror("open failed");
                return -1;
        }

        for(i = 0; i < (argc - 2); i++) {
                int len = strlen(argv[2+i]);
                int cnt, off = 0;

                while(len) {
                        cnt = write(fd, argv[2+i] + off, len);
                        len -= cnt;
                        off += cnt;
                }
        }

        close(fd);
        return 0;
}
[snip]

before change:
sh-4.0# echo > ./set_ftrace_filter
sh-4.0# /test ./set_ftrace_filter "sys" "_open "
sh-4.0# cat ./set_ftrace_filter
#### all functions enabled ####
sh-4.0#

after change:
sh-4.0# echo > ./set_ftrace_notrace
sh-4.0# test ./set_ftrace_notrace "sys" "_open "
sh-4.0# cat ./set_ftrace_notrace
sys_open
sh-4.0#

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
LKML-Reference: <20090811152904.GA26065@jolsa.lab.eng.brq.redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
14 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 18 Aug 2009 23:55:43 +0000 (16:55 -0700)] 
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mce: Don't initialize MCEs on unknown CPUs
  x86, mce: don't log boot MCEs on Pentium M (model == 13) CPUs
  x86: Annotate section mismatch warnings in kernel/apic/x2apic_uv_x.c
  x86, mce: therm_throt: Don't log redundant normality
  x86: Fix UV BAU destination subnode id

14 years agomm: build_zonelists(): move clear node_load[] to __build_all_zonelists()
Bo Liu [Tue, 18 Aug 2009 21:11:19 +0000 (14:11 -0700)] 
mm: build_zonelists(): move clear node_load[] to __build_all_zonelists()

If node_load[] is cleared everytime build_zonelists() is
called,node_load[] will have no help to find the next node that should
appear in the given node's fallback list.

Because of the bug, zonelist's node_order is not calculated as expected.
This bug affects on big machine, which has asynmetric node distance.

[synmetric NUMA's node distance]
     0    1    2
0   10   12   12
1   12   10   12
2   12   12   10

[asynmetric NUMA's node distance]
     0    1    2
0   10   12   20
1   12   10   14
2   20   14   10

This (my bug) is very old but no one has reported this for a long time.
Maybe because the number of asynmetric NUMA is very small and they use
cpuset for customizing node memory allocation fallback.

[akpm@linux-foundation.org: fix CONFIG_NUMA=n build]
Signed-off-by: Bo Liu <bo-liu@hotmail.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoREPORTING-BUGS: add get_maintainer.pl blurb
Joe Perches [Tue, 18 Aug 2009 21:11:18 +0000 (14:11 -0700)] 
REPORTING-BUGS: add get_maintainer.pl blurb

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agonommu: check fd read permission in validate_mmap_request()
Graff Yang [Tue, 18 Aug 2009 21:11:17 +0000 (14:11 -0700)] 
nommu: check fd read permission in validate_mmap_request()

According to the POSIX (1003.1-2008), the file descriptor shall have been
opened with read permission, regardless of the protection options specified to
mmap().  The ltp test cases mmap06/07 need this.

Signed-off-by: Graff Yang <graff.yang@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agospi_s3c24xx: fix transfer setup code
Ben Dooks [Tue, 18 Aug 2009 21:11:17 +0000 (14:11 -0700)] 
spi_s3c24xx: fix transfer setup code

Since the changes to the bitbang driver, there is the possibility we will
be called with either the speed_hz or bpw values zero.  We take these to
mean that the default values (8 bits per word, or maximum bus speed).

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agospi_s3c24xx: fix clock rate calculation
Ben Dooks [Tue, 18 Aug 2009 21:11:16 +0000 (14:11 -0700)] 
spi_s3c24xx: fix clock rate calculation

Currently the clock rate calculation may round as pleased, which means
that it is possible that we will round down and end up with a faster clock
rate than intended.

Change the calculation to use DIV_ROUND_UP() to ensure that we end up with
a clock rate either the same as or lower than the user requested one.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agommc: add the new linux-mmc mailing list to MAINTAINERS
Andrew Morton [Tue, 18 Aug 2009 21:11:12 +0000 (14:11 -0700)] 
mmc: add the new linux-mmc mailing list to MAINTAINERS

There are a number of individual MMC drivers listed in MAINTAINERS.  I
didn't modify those records.  Perhaps I should have.

Cc: <linux-mmc@vger.kernel.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Nicolas Pitre <nico@cam.org>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Cc: Pavel Pisa <ppisa@pikron.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Sascha Sommer <saschasommer@freenet.de>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: revert "oom: move oom_adj value"
KOSAKI Motohiro [Tue, 18 Aug 2009 21:11:10 +0000 (14:11 -0700)] 
mm: revert "oom: move oom_adj value"

The commit 2ff05b2b (oom: move oom_adj value) moveed the oom_adj value to
the mm_struct.  It was a very good first step for sanitize OOM.

However Paul Menage reported the commit makes regression to his job
scheduler.  Current OOM logic can kill OOM_DISABLED process.

Why? His program has the code of similar to the following.

...
set_oom_adj(OOM_DISABLE); /* The job scheduler never killed by oom */
...
if (vfork() == 0) {
set_oom_adj(0); /* Invoked child can be killed */
execve("foo-bar-cmd");
}
....

vfork() parent and child are shared the same mm_struct.  then above
set_oom_adj(0) doesn't only change oom_adj for vfork() child, it's also
change oom_adj for vfork() parent.  Then, vfork() parent (job scheduler)
lost OOM immune and it was killed.

Actually, fork-setting-exec idiom is very frequently used in userland program.
We must not break this assumption.

Then, this patch revert commit 2ff05b2b and related commit.

Reverted commit list
---------------------
- commit 2ff05b2b4e (oom: move oom_adj value from task_struct to mm_struct)
- commit 4d8b9135c3 (oom: avoid unnecessary mm locking and scanning for OOM_DISABLE)
- commit 8123681022 (oom: only oom kill exiting tasks with attached memory)
- commit 933b787b57 (mm: copy over oom_adj value at fork time)

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agovfs: make get_sb_pseudo set s_maxbytes to value that can be cast to signed
Jeff Layton [Tue, 18 Aug 2009 21:11:08 +0000 (14:11 -0700)] 
vfs: make get_sb_pseudo set s_maxbytes to value that can be cast to signed

get_sb_pseudo sets s_maxbytes to ~0ULL which becomes negative when cast
to a signed value.  Fix it to use MAX_LFS_FILESIZE which casts properly
to a positive signed value.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Steve French <smfrench@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Robert Love <rlove@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMAINTAINERS: OSD LIBRARY and FILESYSTEM pattern fix
Joe Perches [Tue, 18 Aug 2009 21:11:06 +0000 (14:11 -0700)] 
MAINTAINERS: OSD LIBRARY and FILESYSTEM pattern fix

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Benny Halevy <bhalevy@panasas.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Tue, 18 Aug 2009 23:29:16 +0000 (16:29 -0700)] 
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

14 years agosecurity: Fix prompt for LSM_MMAP_MIN_ADDR
Andreas Schwab [Tue, 18 Aug 2009 20:14:29 +0000 (22:14 +0200)] 
security: Fix prompt for LSM_MMAP_MIN_ADDR

Fix prompt for LSM_MMAP_MIN_ADDR.

(Verbs are cool!)

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
14 years agosecurity: Make LSM_MMAP_MIN_ADDR default match its help text.
Dave Jones [Tue, 18 Aug 2009 17:47:37 +0000 (13:47 -0400)] 
security: Make LSM_MMAP_MIN_ADDR default match its help text.

Commit 788084aba2ab7348257597496befcbccabdc98a3 added the LSM_MMAP_MIN_ADDR
option, whose help text states "For most ia64, ppc64 and x86 users with lots
of address space a value of 65536 is reasonable and should cause no problems."
Which implies that it's default setting was typoed.

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
14 years agoMerge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 18 Aug 2009 20:57:38 +0000 (13:57 -0700)] 
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Wake up irq thread after action has been installed

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 18 Aug 2009 20:55:01 +0000 (13:55 -0700)] 
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (60 commits)
  net: restore gnet_stats_basic to previous definition
  NETROM: Fix use of static buffer
  e1000e: fix use of pci_enable_pcie_error_reporting
  e1000e: WoL does not work on 82577/82578 with manageability enabled
  cnic: Fix locking in init/exit calls.
  cnic: Fix locking in start/stop calls.
  bnx2: Use mutex on slow path cnic calls.
  cnic: Refine registration with bnx2.
  cnic: Fix symbol_put_addr() panic on ia64.
  gre: Fix MTU calculation for bound GRE tunnels
  pegasus: Add new device ID.
  drivers/net: fixed drivers that support netpoll use ndo_start_xmit()
  via-velocity: Fix test of mii_status bit VELOCITY_DUPLEX_FULL
  rt2x00: fix memory corruption in rf cache, add a sanity check
  ixgbe: Fix receive on real device when VLANs are configured
  ixgbe: Do not return 0 in ixgbe_fcoe_ddp() upon FCP_RSP in DDP completion
  netxen: free napi resources during detach
  netxen: remove netxen workqueue
  ixgbe: fix issues setting rx-usecs with legacy interrupts
  can: fix oops caused by wrong rtnl newlink usage
  ...

14 years agoMerge branch 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Tue, 18 Aug 2009 20:54:26 +0000 (13:54 -0700)] 
Merge branch 'sh/for-2.6.31' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: sh7724 ddr self-refresh changes
  sh: use in-soc KEYSC on se7724
  sh: CMT suspend/resume
  sh: skip disabled LCDC channels

14 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Tue, 18 Aug 2009 20:54:08 +0000 (13:54 -0700)] 
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  Fix new incorrect error return from do_md_stop.

14 years agonilfs2: fix oopses with doubly mounted snapshots
Ryusuke Konishi [Tue, 18 Aug 2009 15:29:43 +0000 (00:29 +0900)] 
nilfs2: fix oopses with doubly mounted snapshots

will fix kernel oopses like the following:

 # mount -t nilfs2 -r -o cp=20 /dev/sdb1 /test1
 # mount -t nilfs2 -r -o cp=20 /dev/sdb1 /test2
 # umount /test1
 # umount /test2

BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1069
in_atomic(): 0, irqs_disabled(): 1, pid: 3886, name: umount.nilfs2
1 lock held by umount.nilfs2/3886:
 #0:  (&type->s_umount_key#31){+.+...}, at: [<c10b398a>] deactivate_super+0x52/0x6c
irq event stamp: 1219
hardirqs last  enabled at (1219): [<c135c774>] __mutex_unlock_slowpath+0xf8/0x119
hardirqs last disabled at (1218): [<c135c6d5>] __mutex_unlock_slowpath+0x59/0x119
softirqs last  enabled at (1214): [<c1033316>] __do_softirq+0x1a5/0x1ad
softirqs last disabled at (1205): [<c1033354>] do_softirq+0x36/0x5a
Pid: 3886, comm: umount.nilfs2 Not tainted 2.6.31-rc6 #55
Call Trace:
 [<c1023549>] __might_sleep+0x107/0x10e
 [<c13603c0>] do_page_fault+0x246/0x397
 [<c136017a>] ? do_page_fault+0x0/0x397
 [<c135e753>] error_code+0x6b/0x70
 [<c136017a>] ? do_page_fault+0x0/0x397
 [<c104f805>] ? __lock_acquire+0x91/0x12fd
 [<c1050a62>] ? __lock_acquire+0x12ee/0x12fd
 [<c1050a62>] ? __lock_acquire+0x12ee/0x12fd
 [<c1050b2b>] lock_acquire+0xba/0xdd
 [<d0d17d3f>] ? nilfs_detach_segment_constructor+0x2f/0x2fa [nilfs2]
 [<c135d4fe>] down_write+0x2a/0x46
 [<d0d17d3f>] ? nilfs_detach_segment_constructor+0x2f/0x2fa [nilfs2]
 [<d0d17d3f>] nilfs_detach_segment_constructor+0x2f/0x2fa [nilfs2]
 [<c104ea2c>] ? mark_held_locks+0x43/0x5b
 [<c104ecb1>] ? trace_hardirqs_on_caller+0x10b/0x133
 [<c104ece4>] ? trace_hardirqs_on+0xb/0xd
 [<d0d09ac1>] nilfs_put_super+0x2f/0xca [nilfs2]
 [<c10b3352>] generic_shutdown_super+0x49/0xb8
 [<c10b33de>] kill_block_super+0x1d/0x31
 [<c10e6599>] ? vfs_quota_off+0x0/0x12
 [<c10b398f>] deactivate_super+0x57/0x6c
 [<c10c4bc3>] mntput_no_expire+0x8c/0xb4
 [<c10c5094>] sys_umount+0x27f/0x2a4
 [<c10c50c6>] sys_oldumount+0xd/0xf
 [<c10031a4>] sysenter_do_call+0x12/0x38
 ...

This turns out to be a bug brought by an -rc1 patch ("nilfs2: simplify
remaining sget() use").

In the patch, a new "put resource" function, nilfs_put_sbinfo()
was introduced to delay freeing nilfs_sb_info struct.

But the nilfs_put_sbinfo() mistakenly used atomic_dec_and_test()
function to check the reference count, and it caused the nilfs_sb_info
was freed when user mounted a snapshot twice.

This bug also suggests there was unseen memory leak in usual mount
/umount operations for nilfs.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
14 years agoperf tools: Make 'make html' work
Kyle McMartin [Tue, 18 Aug 2009 16:41:25 +0000 (12:41 -0400)] 
perf tools: Make 'make html' work

pushd tools/perf/Documentation
make html
popd

is failing for me...

    ASCIIDOC perf-annotate.html
ERROR: unsafe: include file: /etc/asciidoc/./stylesheets/xhtml11.css
ERROR: unsafe: include file:
/etc/asciidoc/./stylesheets/xhtml11-manpage.css
ERROR: unsafe: include file:
/etc/asciidoc/./stylesheets/xhtml11-quirks.css
make: *** [perf-annotate.html] Error 1

Apparently asciidoc "unsafe" is the default mode of operation
in practice.

https://bugzilla.redhat.com/show_bug.cgi?id=506953

Works tidily now.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090818164125.GM25206@bombadil.infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoi386: Fix section mismatches for init code with !HOTPLUG_CPU
Jan Beulich [Tue, 18 Aug 2009 15:41:33 +0000 (16:41 +0100)] 
i386: Fix section mismatches for init code with !HOTPLUG_CPU

Commit 0e83815be719d3391bf5ea24b7fe696c07dbd417 changed the
section the initial_code variable gets allocated in, in an
attempt to address a section conflict warning. This, however
created a new section conflict when building without
HOTPLUG_CPU. The apparently only (reasonable) way to address
this is to always use __REFDATA.

Once at it, also fix a second section mismatch when not using
HOTPLUG_CPU.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Robert Richter <robert.richter@amd.com>
LKML-Reference: <4A8AE7CD020000780001054B@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agogenirq: Wake up irq thread after action has been installed
Thomas Gleixner [Mon, 17 Aug 2009 12:07:16 +0000 (14:07 +0200)] 
genirq: Wake up irq thread after action has been installed

The wake_up_process() of the new irq thread in __setup_irq() is too
early as the irqaction is not yet fully initialized especially
action->irq is not yet set. The interrupt thread might dereference the
wrong irq descriptor.

Move the wakeup after the action is installed and action->irq has been
set.

Reported-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Buesch <mb@bu3sch.de>
14 years agoperf annotate: Fix segmentation fault
Ingo Molnar [Tue, 18 Aug 2009 11:52:28 +0000 (13:52 +0200)] 
perf annotate: Fix segmentation fault

Linus reported this perf annotate segfault:

        [torvalds@nehalem git]$ perf annotate unmap_vmas
        Segmentation fault

        #0  map__clone (self=<value optimized out>) at builtin-annotate.c:236
        #1  thread__fork (self=<value optimized out>) at builtin-annotate.c:372

The bug here was that builtin-annotate.c was a copy of
builtin-report.c and a threading related fix to builtin-report.c
didnt get propagated to builtin-annotate.c ...

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoperf_counter: Fix the PARISC build
Ingo Molnar [Tue, 18 Aug 2009 09:32:24 +0000 (11:32 +0200)] 
perf_counter: Fix the PARISC build

PARISC does not build:

/home/mingo/tip/kernel/perf_counter.c: In function 'perf_counter_index':
/home/mingo/tip/kernel/perf_counter.c:2016: error: 'PERF_COUNTER_INDEX_OFFSET' undeclared (first use in this function)
/home/mingo/tip/kernel/perf_counter.c:2016: error: (Each undeclared identifier is reported only once
/home/mingo/tip/kernel/perf_counter.c:2016: error: for each function it appears in.)

As PERF_COUNTER_INDEX_OFFSET is not defined.

Now, we could define it in the architecture - but lets also provide
a core default of 0 (which happens to be what all but one
architecture uses at the moment).

Architectures that need a different index offset should set this
value in their asm/perf_counter.h files.

Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-parisc@vger.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agomicroblaze: Update Microblaze defconfigs
Michal Simek [Tue, 18 Aug 2009 09:05:11 +0000 (11:05 +0200)] 
microblaze: Update Microblaze defconfigs

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Use klimit instead of _end for memory init
Michal Simek [Tue, 11 Aug 2009 10:36:12 +0000 (12:36 +0200)] 
microblaze: Use klimit instead of _end for memory init

For noMMU system when you use larger rootfs image
there is problem with using _end label because
we increase klimit but in memory initialization
we use still _end which is wrong. Larger mtd rootfs
was rewritten by init_bootmem_node.

MMU kernel use static initialization where klimit
is setup to _end. There is no any other hanling
with klimit.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Enable ppoll syscall
Michal Simek [Thu, 6 Aug 2009 14:00:52 +0000 (16:00 +0200)] 
microblaze: Enable ppoll syscall

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: Sane handling of missing timer/intc in device tree
John Williams [Wed, 29 Jul 2009 12:08:40 +0000 (22:08 +1000)] 
microblaze: Sane handling of missing timer/intc in device tree

This code path doesn't test any returned pointers for NULL, leading to a bad
kernel page fault if there's no timer/intc found.

Slightly better is to BUG(), but even better still would be a printk beforehand.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agomicroblaze: use the generic ack_bad_irq implementation
Christoph Hellwig [Thu, 6 Aug 2009 21:00:38 +0000 (23:00 +0200)] 
microblaze: use the generic ack_bad_irq implementation

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agonilfs2: missing a read lock for segment writer in nilfs_attach_checkpoint()
Zhang Qiang [Tue, 18 Aug 2009 06:58:24 +0000 (14:58 +0800)] 
nilfs2: missing a read lock for segment writer in nilfs_attach_checkpoint()

'ns_cno' of structure 'the_nilfs' must be protected from segment
writer, in other words, the caller of nilfs_get_checkpoint should hold
read lock for nilfs->ns_segctor_sem.  This patch adds the lock/unlock
operations in nilfs_attach_checkpoint() when calling
nilfs_cpfile_get_checkpoint().

Signed-off-by: Zhang Qiang <zhangqiang.buaa@gmail.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
14 years agonet: restore gnet_stats_basic to previous definition
Eric Dumazet [Sun, 16 Aug 2009 09:36:49 +0000 (09:36 +0000)] 
net: restore gnet_stats_basic to previous definition

In 5e140dfc1fe87eae27846f193086724806b33c7d "net: reorder struct Qdisc
for better SMP performance" the definition of struct gnet_stats_basic
changed incompatibly, as copies of this struct are shipped to
userland via netlink.

Restoring old behavior is not welcome, for performance reason.

Fix is to use a private structure for kernel, and
teach gnet_stats_copy_basic() to convert from kernel to user land,
using legacy structure (struct gnet_stats_basic)

Based on a report and initial patch from Michael Spang.

Reported-by: Michael Spang <mspang@csclub.uwaterloo.ca>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoNETROM: Fix use of static buffer
Ralf Baechle [Tue, 18 Aug 2009 01:05:32 +0000 (18:05 -0700)] 
NETROM: Fix use of static buffer

The static variable used by nr_call_to_digi might result in corruption if
multiple threads are trying to usee a node or neighbour via ioctl.  Fixed
by having the caller pass a structure in.  This is safe because nr_add_node
rsp. nr_add_neigh will allocate a permanent structure, if needed.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoFix new incorrect error return from do_md_stop.
NeilBrown [Tue, 18 Aug 2009 00:35:26 +0000 (10:35 +1000)] 
Fix new incorrect error return from do_md_stop.

Recent commit c8c00a6915a2e3d10416e8bdd3138429beb96210
changed the exit paths in do_md_stop and was not quite
careful enough.  There is one path were 'err' now needs
to be cleared but it isn't.
So setting an array to readonly (with mdadm --readonly) will
work, but will incorrectly report and error: ENXIO.

Signed-off-by: NeilBrown <neilb@suse.de>
14 years agoftrace: Unify effect of writing to trace_options and option/*
Zhaolei [Fri, 7 Aug 2009 10:55:48 +0000 (18:55 +0800)] 
ftrace: Unify effect of writing to trace_options and option/*

"echo noglobal-clock > trace_options" can be used to change trace
clock but "echo 0 > options/global-clock" can't. The flag toggling
will be silently accepted without actually changing the clock callback.

We can fix it by using set_tracer_flags() in
trace_options_core_write().

Changelog:
v1->v2: Simplified switch() after Li Zefan <lizf@cn.fujitsu.com>'s
        suggestion

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
14 years agoocfs2: Don't oops in ocfs2_kill_sb on a failed mount
Jan Kara [Thu, 30 Jul 2009 15:01:53 +0000 (17:01 +0200)] 
ocfs2: Don't oops in ocfs2_kill_sb on a failed mount

If we fail to mount the filesystem, we have to be careful not to dereference
uninitialized structures in ocfs2_kill_sb.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agox86, pat: Allow ISA memory range uncacheable mapping requests
Suresh Siddha [Mon, 17 Aug 2009 20:23:50 +0000 (13:23 -0700)] 
x86, pat: Allow ISA memory range uncacheable mapping requests

Max Vozeler reported:
>  Bug 13877 -  bogl-term broken with CONFIG_X86_PAT=y, works with =n
>
>  strace of bogl-term:
>  814   mmap2(NULL, 65536, PROT_READ|PROT_WRITE, MAP_SHARED, 4, 0)
>  = -1 EAGAIN (Resource temporarily unavailable)
>  814   write(2, "bogl: mmaping /dev/fb0: Resource temporarily unavailable\n",
>        57) = 57

PAT code maps the ISA memory range as WB in the PAT attribute, so that
fixed range MTRR registers define the actual memory type (UC/WC/WT etc).

But the upper level is_new_memtype_allowed() API checks are failing,
as the request here is for UC and the return tracked type is WB (Tracked type is
WB as MTRR type for this legacy range potentially will be different for each
4k page).

Fix is_new_memtype_allowed() by always succeeding the ISA address range
checks, as the null PAT (WB) and def MTRR fixed range register settings
satisfy the memory type needs of the applications that map the ISA address
range.

Reported-and-Tested-by: Max Vozeler <xam@debian.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Mon, 17 Aug 2009 20:39:52 +0000 (13:39 -0700)] 
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Fix HPAGE_SIZE redefinition

14 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Mon, 17 Aug 2009 20:39:30 +0000 (13:39 -0700)] 
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: fix locking in xfs_iget_cache_hit

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Mon, 17 Aug 2009 20:38:58 +0000 (13:38 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  security: define round_hint_to_min in !CONFIG_SECURITY
  Security/SELinux: seperate lsm specific mmap_min_addr
  SELinux: call cap_file_mmap in selinux_file_mmap
  Capabilities: move cap_file_mmap to commoncap.c

14 years agoinotify: start watch descriptor count at 1
Eric Paris [Mon, 17 Aug 2009 01:51:55 +0000 (21:51 -0400)] 
inotify: start watch descriptor count at 1

The inotify_add_watch man page specifies that inotify_add_watch() will
return a non-negative integer.  However, historically the inotify
watches started at 1, not at 0.

Turns out that the inotifywait program provided by the inotify-tools
package doesn't properly handle a 0 watch descriptor.  In 7e790dd5 we
changed from starting at 1 to starting at 0.  This patch starts at 1,
just like in previous kernels, but also just like in previous kernels
it's possible for it to wrap back to 0.  This preserves the kernel
functionality exactly like it was before the patch (neither method broke
the spec)

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoinotify: tail drop inotify q_overflow events
Eric Paris [Mon, 17 Aug 2009 01:51:49 +0000 (21:51 -0400)] 
inotify: tail drop inotify q_overflow events

In f44aebcc the tail drop logic of events with no file backing
(q_overflow and in_ignored) was reversed so IN_IGNORED events would
never be tail dropped.  This now means that Q_OVERFLOW events are NOT
tail dropped.  The fix is to not tail drop IN_IGNORED, but to tail drop
Q_OVERFLOW.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agonotify: unused event private race
Eric Paris [Mon, 17 Aug 2009 01:51:44 +0000 (21:51 -0400)] 
notify: unused event private race

inotify decides if private data it passed to get added to an event was
used by checking list_empty().  But it's possible that the event may
have been dequeued and the private event removed so it would look empty.

The fix is to use the return code from fsnotify_add_notify_event rather
than looking at the list.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 17 Aug 2009 20:36:39 +0000 (13:36 -0700)] 
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm: (37 commits)
  ARM: 5673/1: U300 fix initsection compile warning
  ARM: Fix broken highmem support
  mx31moboard: invert sdhc ro signal sense
  ARM: S3C24XX: Fix clkout mpx error
  ARM: S3C64XX: serial: Fix a typo in Kconfig
  IXP4xx: Fix IO_SPACE_LIMIT for 2.6.31-rc core PCI changes
  OMAP3: RX51: Updated rx51_defconfig
  OMAP2/3: mmc-twl4030: Free up MMC regulators while cleaning up
  OMAP3: RX51: Define TWL4030 USB transceiver in board file
  OMAP3: Overo: Fix smsc911x platform device resource value
  OMAP3: Fix omap3 sram virtual addres overlap vmalloc space after increasing vmalloc size
  OMAP2/3: DMA errata correction
  OMAP: Fix testing of cpu defines for mach-omap1
  OMAP3: Overo: add missing pen-down GPIO definition
  OMAP: GPIO: clear/restore level/edge detect settings on mask/unmask
  OMAP3: PM: Fix wrong sequence in suspend.
  OMAP: PM: CPUfreq: obey min/max settings of policy
  OMAP2/3/4: UART: allow in-order port traversal
  OMAP2/3/4: UART: Allow per-UART disabling wakeup for serial ports
  OMAP3: Fixed crash bug with serial + suspend
  ...

14 years agoocfs2: release the buffer head in ocfs2_do_truncate.
Tao Ma [Wed, 12 Aug 2009 06:42:47 +0000 (14:42 +0800)] 
ocfs2: release the buffer head in ocfs2_do_truncate.

In ocfs2_do_truncate, we forget to release last_eb_bh which
will cause memleak. So call brelse in the end.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Handle quota file corruption more gracefully
Jan Kara [Mon, 3 Aug 2009 16:24:21 +0000 (18:24 +0200)] 
ocfs2: Handle quota file corruption more gracefully

ocfs2_read_virt_blocks() does BUG when we try to read a block from a file
beyond its end. Since this can happen due to filesystem corruption, it
is not really an appropriate answer. Make ocfs2_read_quota_block() check
the condition and handle it by calling ocfs2_error() and returning EIO.

[ Modified to print ip_blkno in the error - Joel ]

Reported-by: Tristan Ye <tristan.ye@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoorinoco: correct key bounds check in orinoco_hw_get_tkip_iv
John W. Linville [Mon, 17 Aug 2009 16:09:26 +0000 (12:09 -0400)] 
orinoco: correct key bounds check in orinoco_hw_get_tkip_iv

If key is 4 that is an array out of bounds.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: fix todo lock
Johannes Berg [Wed, 1 Jul 2009 19:26:43 +0000 (21:26 +0200)] 
mac80211: fix todo lock

The key todo lock can be taken from different locks
that require it to be _bh to avoid lock inversion
due to (soft)irqs.

This should fix the two problems reported by Bob and
Gabor:
http://mid.gmane.org/20090619113049.GB18956@hash.localnet
http://mid.gmane.org/4A3FA376.8020307@openwrt.org

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Bob Copeland <me@bobcopeland.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoMIPS: Fix HPAGE_SIZE redefinition
Atsushi Nemoto [Tue, 14 Jul 2009 13:37:09 +0000 (22:37 +0900)] 
MIPS: Fix HPAGE_SIZE redefinition

This patch fixes warnings like this:
  CC      fs/proc/meminfo.o
In file included from /work/linux/include/linux/mmzone.h:20,
                 from /work/linux/include/linux/gfp.h:4,
                 from /work/linux/include/linux/mm.h:8,
                 from /work/linux/fs/proc/meminfo.c:5:
/work/linux/arch/mips/include/asm/page.h:36:1: warning: "HPAGE_SIZE" redefined
In file included from /work/linux/fs/proc/meminfo.c:2:
/work/linux/include/linux/hugetlb.h:107:1: warning: this is the location of the previous definition

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
14 years agox86, mce: Don't initialize MCEs on unknown CPUs
Ingo Molnar [Mon, 17 Aug 2009 08:19:00 +0000 (10:19 +0200)] 
x86, mce: Don't initialize MCEs on unknown CPUs

An older test-box started hanging at the following point during
bootup:

 [    0.022996] Mount-cache hash table entries: 512
 [    0.024996] Initializing cgroup subsys debug
 [    0.025996] Initializing cgroup subsys cpuacct
 [    0.026995] Initializing cgroup subsys devices
 [    0.027995] Initializing cgroup subsys freezer
 [    0.028995] mce: CPU supports 5 MCE banks

I've bisected it down to commit 4efc0670 ("x86, mce: use 64bit
machine check code on 32bit"), which utilizes the MCE code on
32-bit systems too.

The problem is caused by this detail in my config:

  # CONFIG_CPU_SUP_INTEL is not set

This disables the quirks in mce_cpu_quirks() but still enables
MCE support - which then hangs due to the missing quirk
workaround needed on this CPU:

if (c->x86 == 6 && c->x86_model < 0x1A && banks > 0)
mce_banks[0].init = 0;

The safe solution is to not initialize MCEs if we dont know on
what CPU we are running (or if that CPU's support code got
disabled in the config).

Also be a bit more defensive on 32-bit systems: dont do a
boot-time dump of pending MCEs not just on the specific system
that we found a problem with (Pentium-M), but earlier ones as
well.

Now this problem is probably not common and disabling CPU
support is rare - but still being more defensive in something
we turned on for a wide range of CPUs is prudent.

Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
LKML-Reference: Message-ID: <4A88E3E4.40506@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agotimers: Drop write permission on /proc/timer_list
Amerigo Wang [Mon, 17 Aug 2009 09:43:01 +0000 (05:43 -0400)] 
timers: Drop write permission on /proc/timer_list

/proc/timer_list and /proc/slabinfo are not supposed to be
written, so there should be no write permissions on it.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: linux-mm@kvack.org
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Amerigo Wang <amwang@redhat.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <20090817094525.6355.88682.sendpatchset@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoperf_counter: Check task on counter read IPI
Paul Mackerras [Fri, 14 Aug 2009 05:39:10 +0000 (15:39 +1000)] 
perf_counter: Check task on counter read IPI

In general, code in perf_counter.c that is called through an
IPI checks, for per-task counters, that the counter's task is
still the current task.  This is to handle the race condition
where the cpu switches from the task we want to another task in
the interval between sending the IPI and the IPI arriving and
being handled on the target CPU.

For some reason, __perf_counter_read is missing this check, yet
there is no reason why the race condition can't occur.  This
adds a check that the current task is the one we want.  If it
isn't, we just return.  In that case the counter->count value
should be up to date, since it will have been updated when the
counter was scheduled out, which must have happened since the
IPI was sent.

I don't have an example of an actual failure due to this race,
but it seems obvious that it could occur and we need to guard
against it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <19076.63614.277861.368125@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoperf: Rename perf-examples.txt to examples.txt
Carlos R. Mafra [Sun, 16 Aug 2009 22:36:21 +0000 (00:36 +0200)] 
perf: Rename perf-examples.txt to examples.txt

Rename it to examples.txt to avoid the perf-*.txt pattern in
the Makefile, otherwise 'make doc' fails because
perf-examples.txt is not formatted to be a man page:

 ERROR: perf-examples.txt: line 1: manpage document title is mandatory

Signed-off-by: Carlos R. Mafra <crmafra@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86, mce: don't log boot MCEs on Pentium M (model == 13) CPUs
Bartlomiej Zolnierkiewicz [Tue, 28 Jul 2009 21:52:54 +0000 (23:52 +0200)] 
x86, mce: don't log boot MCEs on Pentium M (model == 13) CPUs

On my legacy Pentium M laptop (Acer Extensa 2900) I get bogus MCE on a cold
boot with CONFIG_X86_NEW_MCE enabled, i.e. (after decoding it with mcelog):

MCE 0
HARDWARE ERROR. This is *NOT* a software problem!
Please contact your hardware vendor
CPU 0 BANK 1 MCG status:
MCi status:
Error overflow
Uncorrected error
Error enabled
Processor context corrupt
MCA: Data CACHE Level-1 UNKNOWN Error
STATUS f200000000000195 MCGSTATUS 0

[ The other STATUS values observed: f2000000000001b5 (... UNKNOWN error)
  and f200000000000115 (... READ Error).

  To verify that this is not a CONFIG_X86_NEW_MCE bug I also modified
  the CONFIG_X86_OLD_MCE code (which doesn't log any MCEs) to dump
  content of STATUS MSR before it is cleared during initialization. ]

Since the bogus MCE results in a kernel taint (which in turn disables
lockdep support) don't log boot MCEs on Pentium M (model == 13) CPUs
by default ("mce=bootlog" boot parameter can be be used to get the old
behavior).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoxfs: fix locking in xfs_iget_cache_hit
Christoph Hellwig [Mon, 17 Aug 2009 00:36:34 +0000 (20:36 -0400)] 
xfs: fix locking in xfs_iget_cache_hit

The locking in xfs_iget_cache_hit currently has numerous problems:

 - we clear the reclaim tag without i_flags_lock which protects
   modifications to it
 - we call inode_init_always which can sleep with pag_ici_lock
   held (this is oss.sgi.com BZ #819)
 - we acquire and drop i_flags_lock a lot and thus provide no
   consistency between the various flags we set/clear under it

This patch fixes all that with a major revamp of the locking in
the function.  The new version acquires i_flags_lock early and
only drops it once we need to call into inode_init_always or before
calling xfs_ilock.

This patch fixes a bug seen in the wild where we race modifying the
reclaim tag.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
14 years agosecurity: define round_hint_to_min in !CONFIG_SECURITY
Eric Paris [Fri, 7 Aug 2009 18:53:57 +0000 (14:53 -0400)] 
security: define round_hint_to_min in !CONFIG_SECURITY

Fix the header files to define round_hint_to_min() and to define
mmap_min_addr_handler() in the !CONFIG_SECURITY case.

Built and tested with !CONFIG_SECURITY

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
14 years agoSecurity/SELinux: seperate lsm specific mmap_min_addr
Eric Paris [Fri, 31 Jul 2009 16:54:11 +0000 (12:54 -0400)] 
Security/SELinux: seperate lsm specific mmap_min_addr

Currently SELinux enforcement of controls on the ability to map low memory
is determined by the mmap_min_addr tunable.  This patch causes SELinux to
ignore the tunable and instead use a seperate Kconfig option specific to how
much space the LSM should protect.

The tunable will now only control the need for CAP_SYS_RAWIO and SELinux
permissions will always protect the amount of low memory designated by
CONFIG_LSM_MMAP_MIN_ADDR.

This allows users who need to disable the mmap_min_addr controls (usual reason
being they run WINE as a non-root user) to do so and still have SELinux
controls preventing confined domains (like a web server) from being able to
map some area of low memory.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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