Commit Graph

423456 Commits

Author SHA1 Message Date
Naresh Bhat
e30722e497 watchdog: sp805_wdt depends also on ARM64
Add sp805_wdt depends on ARM64.

Signed-off-by: Naresh Bhat <naresh.bhat@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:27:52 +01:00
Jonas Jensen
8773926d71 watchdog: mach-moxart: add restart handler
mach-moxart lacks a separate register for reset; as a workaround,
add a function that can be hooked to arm_pm_restart.

Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:27:32 +01:00
Christophe Leroy
d5cfaf0a85 watchdog: mpc8xxx_wdt convert to watchdog core
Convert mpc8xxx_wdt.c to the new watchdog API.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:27:08 +01:00
Sachin Kamat
15edd9eedd watchdog: sirf: Remove redundant of_match_ptr helper
'sirfsoc_wdt_of_match' is always compiled in. Hence the
helper macro is not needed.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:26:31 +01:00
Thomas Mingarelli
7bb5be947e watchdog: hpwdt patch to display informative string
This patch is being submitted to output a general string when the panic comes
in that informs the user of the possible places to look for the source of the
NMI. Because various systems log the message in different places this would
give a single display of where to go look instead of code that acts on all
these different server names or IDs.

Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:26:10 +01:00
Baruch Siach
58a251f2c2 watchdog: dw_wdt: remove build dependencies
There is nothing ARM specific in this driver, and we intend to use it on the
Xtensa architecture. Also, clk.h now includes stubs for !CONFIG_HAVE_CLK, so
the driver should build anyway.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:25:46 +01:00
Anson Huang
1a9c5efa57 watchdog: imx2_wdt: disable watchdog timer during low power mode
We should set watchdog timer to be disabled in low power mode,
as there is no service running in background, otherwise, system
will reset unexpected.

Signed-off-by: Anson Huang <b20788@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:25:20 +01:00
Doug Anderson
cffc9a60eb watchdog: s3c2410_wdt: Report when the watchdog reset the system
A good watchdog driver is supposed to report when it was responsible
for resetting the system.  Implement this for the s3c2410, at least on
exynos5250 and exynos5420 where we already have a pointer to the PMU
registers to read the information.

Note that exynos4 SoCs also provide the reset status, but providing
that is left as an exercise for future changes and is not plumbed up
in this patch series.  Also note the exynos4 SoCs don't appear to need
any PMU config, which is why this patch separates the concepts of
having PMU Registers vs. needing PMU Config.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:24:33 +01:00
Leela Krishna Amudala
4f1f653a68 watchdog: s3c2410_wdt: use syscon regmap interface to configure pmu register
Add device tree support for exynos5250 and 5420 SoCs and use syscon regmap interface
to configure AUTOMATIC_WDT_RESET_DISABLE and MASK_WDT_RESET_REQUEST registers of PMU
to mask/unmask enable/disable of watchdog in probe and s2r scenarios.

Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:24:15 +01:00
Doug Anderson
178624403c watchdog: s3c2410_wdt: Handle rounding a little better for timeout
The existing watchdog timeout worked OK but didn't deal with
rounding in an ideal way when dividing out all of its clocks.

Specifically if you had a timeout of 32 seconds and an input clock of
66666666, you'd end up setting a timeout of 31.9998 seconds and
reporting a timeout of 31 seconds.

Specifically DBG printouts showed:
  s3c2410wdt_set_heartbeat: count=16666656, timeout=32, freq=520833
  s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666656 (0000ff4f)
and the final timeout reported to the user was:
  ((count / divisor) * divisor) / freq
  (0xff4f * 255) / 520833 = 31 (truncated from 31.9998)
the technically "correct" value is:
  (0xff4f * 255) / (66666666.0 / 128) = 31.9998

By using "DIV_ROUND_UP" we can be a little more correct.
  s3c2410wdt_set_heartbeat: count=16666688, timeout=32, freq=520834
  s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666688 (0000ff50)
and the final timeout reported to the user:
  (0xff50 * 255) / 520834 = 32
the technically "correct" value is:
  (0xff50 * 255) / (66666666.0 / 128) = 32.0003

We'll use a DIV_ROUND_UP to solve this, generally erroring on the side
of reporting shorter values to the user and setting the watchdog to
slightly longer than requested:
* Round input frequency up to assume watchdog is counting faster.
* Round divisions by divisor up to give us extra time.

At the same time we can avoid a for loop by just doing the right math.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:23:20 +01:00
Doug Anderson
0f1dd98d89 watchdog: s3c2410_wdt: Only register for cpufreq on ARM_S3C24XX_CPUFREQ
On modern SoCs the watchdog timer is parented on a clock that doesn't
change every time we have a cpufreq change.  That means we don't need
to constantly adjust the watchdog timer, so avoid registering for and
dealing with cpufreq transitions unless we've actually got
CONFIG_ARM_S3C24XX_CPUFREQ defined.

Note that this is more than just an optimization.  The s3c2410
watchdog driver actually pats the watchdog on every CPU frequency
change.  On modern systems these happen many times per second (even in
a system where "nothing" is happening).  That effectively makes any
userspace watchdog program useless (the watchdog is constantly patted
by the kernel).  If we need ARM_S3C24XX_CPUFREQ defined on a
multiplatform kernel we'll need to make sure that kernel supports
common clock and change this to user common clock framework.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:22:38 +01:00
Alexander Shiyan
25134eafb0 watchdog: GPIO-controlled watchdog
This patch adds a watchdog driver for devices controlled through GPIO,
(Analog Devices ADM706, Maxim MAX823, National NE555 etc).

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:21:02 +01:00
Ivan Khoronzhuk
8832b20093 watchdog: davinci: reuse driver for keystone arch
The keystone arch uses the same IP watchdog, so add "ti,keystone-wdt"
compatible and correct identity.

The Keystone arch is using clocks in DT and source clock for watchdog
has to be specified, so add this to binding.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:20:05 +01:00
Ivan Khoronzhuk
4fa5daa9c6 watchdog: davinci: add "timeout-sec" property
Since Davinci WDT has been switched to use WDT core, it became able
to support timeout-sec property, so add it to it's binding description.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:20:01 +01:00
Ivan Khoronzhuk
a771994901 watchdog: davinci: add GET_TIMELEFT option support
Currently, the davinci watchdog can be read while counting,
so we can add ability to report the remaining time before
the system will reboot.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:19:58 +01:00
Ivan Khoronzhuk
6d9a6cf5c6 watchdog: davinci: use davinci_wdt_device structure to hold device data
Some SoCs, like Keystone 2, can support more than one WDT and each
watchdog device has to use it's own base address, clock source,
watchdog device, so add new davinci_wdt_device structure to hold
device data.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:19:55 +01:00
Ivan Khoronzhuk
f48f3ceabf watchdog: davinci: change driver to use WDT core
To reduce code duplicate and increase code readability use WDT core
code to handle WDT interface.

Remove io_lock as the WDT core uses mutex to lock each wdt device.
Remove wdt_state as the WDT core tracks state with its own variable.

The watchdog_init_timeout() can read timeout value from timeout-sec
property if the passed value is out of bounds. The heartbeat is
initialized in next way. If heartbeat is not set thought module
parameter, try to read it's value from WDT node timeout-sec property.
If node has no one, use default value.

The heartbeat is hold in wdd->timeout by WDT core, so use it in
order to set timeout period.

Davinci WDT can't be stopped and once it's expired - it can be
rearmed only after hardware reset, that's why nowayout feature
is enforced.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:19:52 +01:00
Markus Mayer
6e2ac20e9c watchdog: bcm281xx: Debugfs support
This change introduces debugfs support for the BCM281xx watchdog driver.

Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:17:53 +01:00
Markus Mayer
6adb730dc2 watchdog: bcm281xx: Watchdog Driver
This commit adds support for the watchdog timer used on the BCM281xx
family of SoCs.

Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <matt.porter@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 21:13:50 +01:00
Doug Anderson
2c34d59916 watchdog: core: Make dt "timeout-sec" property work on drivers w/out min/max
It is valid for a watchdog driver to have 0 for a "min" and "max"
timeout if the driver doesn't need the core to enforce the concepts of
min and max.  The s3c2410_wdt driver is one such driver.  Specifically
it can be hard for that driver to come up with a static "max" on all
platforms without a lot more information since the input clock on
S3C2410 and S3C2440 can change with DVFS.

As written, watchdog_init_timeout() will not ever read "timeout-sec"
on these drivers since watchdog_timeout_invalid() will _never_ return
true.  Change to not consider a timeout_parm of 0 as valid even if
min/max aren't specified by the driver.  Also handle the case when
there is no min/max and no "timeout-sec" property.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 19:07:56 +01:00
Jingoo Han
bc17f9dcb1 watchdog: remove DEFINE_PCI_DEVICE_TABLE macro
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28 19:07:07 +01:00
Linus Torvalds
627f4b3ee3 Microblaze patches for 3.14-rc1
- Add CCF support
 - Fix BS=0 compilation
 - Wire up defconfig
 - Some minor cleanups and fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.10 (GNU/Linux)
 
 iEYEABECAAYFAlLnf6AACgkQykllyylKDCEPhgCeNZmE2b1pEjeyZ7TGY2+uxi93
 WrwAoIfey197x8D+S+bLgWYfaT++cGe+
 =R9Zc
 -----END PGP SIGNATURE-----

Merge tag 'microblaze-3.14-rc1' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze patches from Michal Simek:
 - add CCF support
 - fix BS=0 compilation
 - wire up defconfig
 - some minor cleanups and fixes

* tag 'microblaze-3.14-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Add missing v8.50.a version
  microblaze: Fix missing bracket in printk
  microblaze: Fix compilation error for BS=0
  microblaze: Disable stack protection from bootloader
  microblaze: Define read/write{b,w,l}_relaxed MMIO
  microblaze: timer: Do not initialized system timer twice
  microblaze: timer: Use generic sched_clock implementation
  microblaze: Add NOTES section to linker script
  microblaze: Add support for CCF
  microblaze: Simplify fcpu helper function
  microblaze/uapi: Use Kbuild logic to include <asm-generic/types.h>
  microblaze: Remove duplicate declarations of _stext[] and _etext[]
  microblaze: Remove _fdt_start casts
  microblaze: Wire up defconfig to mmu_defconfig
2014-01-28 09:04:11 -08:00
Linus Torvalds
e770d73ceb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky:
 "A new binary interface to be able to query and modify the LPAR
  scheduler weight and cap settings.  Some improvements for the hvc
  terminal over iucv and a couple of bux fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/hypfs: add interface for diagnose 0x304
  s390: wire up sys_sched_setattr/sys_sched_getattr
  s390/uapi: fix struct statfs64 definition
  s390/uaccess: remove dead extern declarations, make functions static
  s390/uaccess: test if current->mm is set before walking page tables
  s390/zfcpdump: make zfcpdump depend on 64BIT
  s390/32bit: fix cmpxchg64
  s390/xpram: don't modify module parameters
  s390/zcrypt: remove zcrypt kmsg documentation again
  s390/hvc_iucv: Automatically assign free HVC terminal devices
  s390/hvc_iucv: Display connection details through device attributes
  s390/hvc_iucv: fix sparse warning
  s390/vmur: Link parent CCW device during UR device creation
2014-01-28 09:02:24 -08:00
Linus Torvalds
be86497152 CRIS correction for 3.14
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.10 (GNU/Linux)
 
 iEYEABECAAYFAlLnu6wACgkQ31LbvUHyf1esQwCfUQc5dupuyu+uvKkaPbDJEshU
 E3IAnR5DYFdmynaePGpfdTeNmCYGbMis
 =8B4h
 -----END PGP SIGNATURE-----

Merge tag 'cris-correction-for-3.14' of git://jni.nu/cris

Pull cris fix from Jesper Nilsson:
 "One include too much was removed"

* tag 'cris-correction-for-3.14' of git://jni.nu/cris:
  CRISv10: Readd missing header
2014-01-28 09:01:14 -08:00
Linus Torvalds
a53b75b37a Bug fixes and cleanups for ext4. We also enable the punch hole
functionality for bigalloc file systems.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCAAGBQJS59knAAoJENNvdpvBGATwdPMQAOqi3O7DdDKt6wUkv6LnYSH5
 y5MpvsKlvAL9WmS9Uj/S9VnG0eIakLbdl1DcTrnsqgbCryHPlWC8jOsPn22yanlN
 T+QGfw+1CkPrionsQVzKH17sFImITrcvz9z0vaX9//imSRmhm8JHMgVaboKnMXK2
 pdYdwNUGPlG4sUiaZEgX2lD4q57MUYRmGBracTRA4rC7roxRrZRv4MpRe3vdqC9D
 RNkUfrv6Bv63JsMVYAMzanMCH0IB+96ZhoRAym82H1U7nyAMvDKFWASf8dHbOXDu
 64RQlB55Ehqv4wAJ2JBwkH1vi6NIF/LEysfmksctMRDB+rP6i6HSQMOQ3SsjDUWL
 Llq6J6raeyfHa0sCDh5A4hQhtOFMuhhbqHWFcfoUgGTI3aSnt7zGuh7/afIw++Go
 tLzqJFRzCgGdnmihLRbjIy9d6eUeEj2m40bg/QOg89Y3EhTsq0kwVf0TXAOskvx4
 kBWH4ZFemfUxfDMNIa9uPN99I4/FlBO/9xGneDb6vYtPB/fA3jnaPYu/LIorF6Sc
 Mw1wH4Qy3oX5j9VcJlvZPY5cGmBLNyQqEdbOBgi6zeEFF1g2kTMf1PQQ++9rcLlV
 Cf9qc4IrjAUGbwo59gQtuB8OzhNxkl4mhOTVNZ/PW8G2rpufdqGhndUsjTAPNmKM
 +tf+CjdJuHzPnj7Ig21u
 =ofDv
 -----END PGP SIGNATURE-----

Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 update from Ted Ts'o:
 "Bug fixes and cleanups for ext4.  We also enable the punch hole
  functionality for bigalloc file systems"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: delete "set but not used" variables
  ext4: don't pass freed handle to ext4_walk_page_buffers
  ext4: avoid clearing beyond i_blocks when truncating an inline data file
  ext4: ext4_inode_is_fast_symlink should use EXT4_CLUSTER_SIZE
  ext4: fix a typo in extents.c
  ext4: use %pd printk specificer
  ext4: standardize error handling in ext4_da_write_inline_data_begin()
  ext4: retry allocation when inline->extent conversion failed
  ext4: enable punch hole for bigalloc
2014-01-28 08:54:16 -08:00
Linus Torvalds
2b2b15c32a NFS client updates for Linux 3.14
Highlights include:
 
 - Stable fix for an infinite loop in RPC state machine
 - Stable fix for a use after free situation in the NFSv4 trunking discovery
 - Stable fix for error handling in the NFSv4 trunking discovery
 - Stable fix for the page write update code
 - Stable fix for the NFSv4.1 mount time security negotiation
 - Stable fix for the NFSv4 open code.
 - O_DIRECT locking fixes
 - fix an Oops in the pnfs file commit code
 - RPC layer needs finer grained handling of connection errors
 - More RPC GSS upcall fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJS5ozQAAoJEGcL54qWCgDy8EIQAMKYX1E5qOal3oJCzWdHAPNz
 ZSQ7CbA3c66vgJwpxy5Mz4gEtTK1IEzfTX31gLgkCXkyw54As+0lOa/SvoXFUusN
 BdBtskkIcVjhcly56xP2dzWGMsVrS8Vt+nwhsPv1Qaor5El0zXwPv8YE5PuuxJK5
 fyQdFEsywnCHtmFdyBdzsV8qHvAA0rxZTMmd6ZDBPCi9362D+pfp/1ESVOA6O14N
 rMBAbadF0pVM1UNvcvxSQaeqwCNqg5OuYKgyy9rhlH0WiQ6ijvKPrLVwg2pKZ2hj
 DCmwEqmKNEpxIFeOvmgFs/uhOEBx2IOF58xTc0+X81q96yTVm80anG1VTNFX577U
 gO8Ts0K/gWTD8ghxz4vh4/llc4yUv8ep8zB3qdSfL8C217UJIwnshkbPct7P1DTh
 8vpWtUeVJPu6rwcxMQXy0NntNZjRo1aqrv+htvFzPAMicM2KEAp73eOjStefvtr5
 JkdbvhhOR6dLwPrUEXM5FW5ewURegLjLcEqw3tq8kMnH0nEYjWOMBaB+uT0QFXun
 EXNqCpQHmHisem/3lGU+iVPc9lPf3C6tPIgjvoSplKcah1l3phVx6a5ReL22Zx2n
 qB2ePHfqToMjMcWiW3O3sbRpaDb+Br7xI4l8F3oeicvfv7SKB8k1u/w2IIoXKFIa
 FIdD6R0UIPgdnH5c03EC
 =abfY
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

   - stable fix for an infinite loop in RPC state machine
   - stable fix for a use after free situation in the NFSv4 trunking discovery
   - stable fix for error handling in the NFSv4 trunking discovery
   - stable fix for the page write update code
   - stable fix for the NFSv4.1 mount time security negotiation
   - stable fix for the NFSv4 open code.
   - O_DIRECT locking fixes
   - fix an Oops in the pnfs file commit code
   - RPC layer needs finer grained handling of connection errors
   - more RPC GSS upcall fixes"

* tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (30 commits)
  pnfs: Proper delay for NFS4ERR_RECALLCONFLICT in layout_get_done
  pnfs: fix BUG in filelayout_recover_commit_reqs
  nfs4: fix discover_server_trunking use after free
  NFSv4.1: Handle errors correctly in nfs41_walk_client_list
  nfs: always make sure page is up-to-date before extending a write to cover the entire page
  nfs: page cache invalidation for dio
  nfs: take i_mutex during direct I/O reads
  nfs: merge nfs_direct_write into nfs_file_direct_write
  nfs: merge nfs_direct_read into nfs_file_direct_read
  nfs: increment i_dio_count for reads, too
  nfs: defer inode_dio_done call until size update is done
  nfs: fix size updates for aio writes
  nfs4.1: properly handle ENOTSUP in SECINFO_NO_NAME
  NFSv4.1: Fix a race in nfs4_write_inode
  NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding
  point to the right include file in a comment (left over from a9004abc3)
  NFS: dprintk() should not print negative fileids and inode numbers
  nfs: fix dead code of ipv6_addr_scope
  sunrpc: Fix infinite loop in RPC state machine
  SUNRPC: Add tracepoint for socket errors
  ...
2014-01-28 08:46:44 -08:00
Linus Torvalds
bf3d846b78 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
 "Assorted stuff; the biggest pile here is Christoph's ACL series.  Plus
  assorted cleanups and fixes all over the place...

  There will be another pile later this week"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (43 commits)
  __dentry_path() fixes
  vfs: Remove second variable named error in __dentry_path
  vfs: Is mounted should be testing mnt_ns for NULL or error.
  Fix race when checking i_size on direct i/o read
  hfsplus: remove can_set_xattr
  nfsd: use get_acl and ->set_acl
  fs: remove generic_acl
  nfs: use generic posix ACL infrastructure for v3 Posix ACLs
  gfs2: use generic posix ACL infrastructure
  jfs: use generic posix ACL infrastructure
  xfs: use generic posix ACL infrastructure
  reiserfs: use generic posix ACL infrastructure
  ocfs2: use generic posix ACL infrastructure
  jffs2: use generic posix ACL infrastructure
  hfsplus: use generic posix ACL infrastructure
  f2fs: use generic posix ACL infrastructure
  ext2/3/4: use generic posix ACL infrastructure
  btrfs: use generic posix ACL infrastructure
  fs: make posix_acl_create more useful
  fs: make posix_acl_chmod more useful
  ...
2014-01-28 08:38:04 -08:00
Jesper Nilsson
cd065a010a CRISv10: Readd missing header
The svinto architecture header was mistakenly removed,
leading to a compile error.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2014-01-28 15:14:35 +01:00
Linus Torvalds
54c0a4b461 Merge branch 'akpm' (incoming from Andrew)
Merge misc updates from Andrew Morton:

 - a few hotfixes

 - dynamic-debug updates

 - ipc updates

 - various other sweepings off the factory floor

* akpm: (31 commits)
  firmware/google: drop 'select EFI' to avoid recursive dependency
  compat: fix sys_fanotify_mark
  checkpatch.pl: check for function declarations without arguments
  mm/migrate.c: fix setting of cpupid on page migration twice against normal page
  softirq: use const char * const for softirq_to_name, whitespace neatening
  softirq: convert printks to pr_<level>
  softirq: use ffs() in __do_softirq()
  kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()
  splice: fix unexpected size truncation
  ipc: fix compat msgrcv with negative msgtyp
  ipc,msg: document barriers
  ipc: delete seq_max field in struct ipc_ids
  ipc: simplify sysvipc_proc_open() return
  ipc: remove useless return statement
  ipc: remove braces for single statements
  ipc: standardize code comments
  ipc: whitespace cleanup
  ipc: change kern_ipc_perm.deleted type to bool
  ipc: introduce ipc_valid_object() helper to sort out IPC_RMID races
  ipc/sem.c: avoid overflow of semop undo (semadj) value
  ...
2014-01-27 21:17:55 -08:00
Linus Torvalds
1b17366d69 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
 "So here's my next branch for powerpc.  A bit late as I was on vacation
  last week.  It's mostly the same stuff that was in next already, I
  just added two patches today which are the wiring up of lockref for
  powerpc, which for some reason fell through the cracks last time and
  is trivial.

  The highlights are, in addition to a bunch of bug fixes:

   - Reworked Machine Check handling on kernels running without a
     hypervisor (or acting as a hypervisor).  Provides hooks to handle
     some errors in real mode such as TLB errors, handle SLB errors,
     etc...

   - Support for retrieving memory error information from the service
     processor on IBM servers running without a hypervisor and routing
     them to the memory poison infrastructure.

   - _PAGE_NUMA support on server processors

   - 32-bit BookE relocatable kernel support

   - FSL e6500 hardware tablewalk support

   - A bunch of new/revived board support

   - FSL e6500 deeper idle states and altivec powerdown support

  You'll notice a generic mm change here, it has been acked by the
  relevant authorities and is a pre-req for our _PAGE_NUMA support"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (121 commits)
  powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
  powerpc: Add support for the optimised lockref implementation
  powerpc/powernv: Call OPAL sync before kexec'ing
  powerpc/eeh: Escalate error on non-existing PE
  powerpc/eeh: Handle multiple EEH errors
  powerpc: Fix transactional FP/VMX/VSX unavailable handlers
  powerpc: Don't corrupt transactional state when using FP/VMX in kernel
  powerpc: Reclaim two unused thread_info flag bits
  powerpc: Fix races with irq_work
  Move precessing of MCE queued event out from syscall exit path.
  pseries/cpuidle: Remove redundant call to ppc64_runlatch_off() in cpu idle routines
  powerpc: Make add_system_ram_resources() __init
  powerpc: add SATA_MV to ppc64_defconfig
  powerpc/powernv: Increase candidate fw image size
  powerpc: Add debug checks to catch invalid cpu-to-node mappings
  powerpc: Fix the setup of CPU-to-Node mappings during CPU online
  powerpc/iommu: Don't detach device without IOMMU group
  powerpc/eeh: Hotplug improvement
  powerpc/eeh: Call opal_pci_reinit() on powernv for restoring config space
  powerpc/eeh: Add restore_config operation
  ...
2014-01-27 21:11:26 -08:00
Linus Torvalds
d12de1ef5e Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc mremap fix from Ben Herrenschmidt:
 "This is the patch that I had sent after -rc8 and which we decided to
  wait before merging.  It's based on a different tree than my -next
  branch (it needs some pre-reqs that were in -rc4 or so while my -next
  is based on -rc1) so I left it as a separate branch for your to pull.
  It's identical to the request I did 2 or 3 weeks back.

  This fixes crashes in mremap with THP on powerpc.

  The fix however requires a small change in the generic code.  It moves
  a condition into a helper we can override from the arch which is
  harmless, but it *also* slightly changes the order of the set_pmd and
  the withdraw & deposit, which should be fine according to Kirill (who
  wrote that code) but I agree -rc8 is a bit late...

  It was acked by Kirill and Andrew told me to just merge it via powerpc"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/thp: Fix crash on mremap
2014-01-27 21:03:39 -08:00
Ard Biesheuvel
c2218e26c0 firmware/google: drop 'select EFI' to avoid recursive dependency
The GOOGLE_SMI Kconfig symbol depends on DMI and selects EFI.  This
causes problems on other archs when introducing DMI support that depends
on EFI, as it results in a recursive dependency:

  arch/arm/Kconfig:1845:error: recursive dependency detected!
  arch/arm/Kconfig:1845:	symbol DMI depends on EFI

Fix by changing the 'select EFI' to a 'depends on EFI'.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: David Rientjes <rientjes@google.com>
Acked-by: Mike Waychison <mikew@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Heiko Carstens
592f6b842f compat: fix sys_fanotify_mark
Commit 91c2e0bcae ("unify compat fanotify_mark(2), switch to
COMPAT_SYSCALL_DEFINE") added a new unified compat fanotify_mark syscall
to be used by all architectures.

Unfortunately the unified version merges the split mask parameter in a
wrong way: the lower and higher word got swapped.

This was discovered with glibc's tst-fanotify test case.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-by: Andreas Krebbel <krebbel@linux.vnet.ibm.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Acked-by: "David S. Miller" <davem@davemloft.net>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: <stable@vger.kernel.org>	[3.10+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Joe Perches
b36190c5f8 checkpatch.pl: check for function declarations without arguments
Functions like this one are evil:

void foo()
{
	...
}

Because these functions allow variadic arguments without
checking the arguments at all.

Original patch by Richard Weinberger.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Wanpeng Li
a3978a5194 mm/migrate.c: fix setting of cpupid on page migration twice against normal page
Commit 7851a45cd3 ("mm: numa: Copy cpupid on page migration") copies
over the cpupid at page migration time.  It is unnecessary to set it
again in alloc_misplaced_dst_page().

Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Joe Perches
ce85b4f2ea softirq: use const char * const for softirq_to_name, whitespace neatening
Reduce data size a little.
Reduce checkpatch noise.

$ size kernel/softirq.o*
   text	   data	    bss	    dec	    hex	filename
  11554	   6013	   4008	  21575	   5447	kernel/softirq.o.new
  11474	   6093	   4008	  21575	   5447	kernel/softirq.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Joe Perches
4032276415 softirq: convert printks to pr_<level>
Use a more current logging style.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Joe Perches
2e702b9f6c softirq: use ffs() in __do_softirq()
Possible speed improvement of __do_softirq() by using ffs() instead of
using a while loop with an & 1 test then single bit shift.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Chen Gang
a19428e5c3 kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()
vsnprintf() may let 'r' larger than sizeof(buf), in this case, if 'r' is
also less than "vmcoreinfo_max_size - vmcoreinfo_size" (left size of
destination buffer), next memcpy() will read the unexpected addresses.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Xiao Guangrong
53e0ee9fc5 splice: fix unexpected size truncation
@splice_desc.total_len is 32 bit(unsigned int) which is used to store the
size passed from userspace which is 64 bit(size_t) so that the size is
unexpectedly truncated

That means vmsplice can not work if the size passed from userspace is >=
4G, for example, we noticed in vmsplice, splice-reader does not do
anything and splice-writer is waiting for available buffer forever if the
size is 4G

Fix it by extending @splice_desc.total_len to 64 bits as well

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Mateusz Guzik
e7ca255236 ipc: fix compat msgrcv with negative msgtyp
Compat function takes msgtyp argument as u32 and passes it down to
do_msgrcv which results in casting to long, thus the sign is lost and we
get a big positive number instead.

Cast the argument to signed type before passing it down.

Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Reported-by: Gabriellla Schmidt <gsc@bruker.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Davidlohr Bueso
ffa571dafb ipc,msg: document barriers
Both expunge_all() and pipeline_send() rely on both a nil msg value and
a full barrier to guarantee the correct ordering when waking up a task.

While its counterpart at the receiving end is well documented for the
lockless recv algorithm, we still need to document these specific
smp_mb() calls.

[akpm@linux-foundation.org: fix typo, per Mike]
[akpm@linux-foundation.org: mroe tpyos]
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Davidlohr Bueso
daf948c7d1 ipc: delete seq_max field in struct ipc_ids
This field is only used to reset the ids seq number if it exceeds the
smaller of INT_MAX/SEQ_MULTIPLIER and USHRT_MAX, and can therefore be
moved out of the structure and into its own macro.  Since each
ipc_namespace contains a table of 3 pointers to struct ipc_ids we can
save space in instruction text:

   text    data     bss     dec     hex filename
  56232    2348      24   58604    e4ec ipc/built-in.o
  56216    2348      24   58588    e4dc ipc/built-in.o-after

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Reviewed-by: Jonathan Gonzalez <jgonzalez@linets.cl>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Davidlohr Bueso
8dc5cd04f9 ipc: simplify sysvipc_proc_open() return
Get rid of silly/useless label jumping.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Davidlohr Bueso
95d4eb2822 ipc: remove useless return statement
Only found in ipc_rmid().

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:40 -08:00
Davidlohr Bueso
3ab08fe204 ipc: remove braces for single statements
Deal with checkpatch messages:
     WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:39 -08:00
Davidlohr Bueso
8001c85810 ipc: standardize code comments
IPC commenting style is all over the place, *specially* in util.c.  This
patch orders things a bit.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:39 -08:00
Manfred Spraul
239521f31d ipc: whitespace cleanup
The ipc code does not adhere the typical linux coding style.
This patch fixes lots of simple whitespace errors.

- mostly autogenerated by
  scripts/checkpatch.pl -f --fix \
	--types=pointer_location,spacing,space_before_tab
- one manual fixup (keep structure members tab-aligned)
- removal of additional space_before_tab that were not found by --fix

Tested with some of my msg and sem test apps.

Andrew: Could you include it in -mm and move it towards Linus' tree?

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Suggested-by: Li Bin <huawei.libin@huawei.com>
Cc: Joe Perches <joe@perches.com>
Acked-by: Rafael Aquini <aquini@redhat.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:39 -08:00
Rafael Aquini
72a8ff2f92 ipc: change kern_ipc_perm.deleted type to bool
struct kern_ipc_perm.deleted is meant to be used as a boolean toggle, and
the changes introduced by this patch are just to make the case explicit.

Signed-off-by: Rafael Aquini <aquini@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Greg Thelen <gthelen@google.com>
Acked-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:39 -08:00
Rafael Aquini
0f3d2b0135 ipc: introduce ipc_valid_object() helper to sort out IPC_RMID races
After the locking semantics for the SysV IPC API got improved, a couple
of IPC_RMID race windows were opened because we ended up dropping the
'kern_ipc_perm.deleted' check performed way down in ipc_lock().  The
spotted races got sorted out by re-introducing the old test within the
racy critical sections.

This patch introduces ipc_valid_object() to consolidate the way we cope
with IPC_RMID races by using the same abstraction across the API
implementation.

Signed-off-by: Rafael Aquini <aquini@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Greg Thelen <gthelen@google.com>
Reviewed-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27 21:02:39 -08:00