Commit Graph

286596 Commits

Author SHA1 Message Date
Len Brown
79ba0db69c Merge branches 'einj', 'intel_idle', 'misc', 'srat' and 'turbostat-ivb' into release 2012-01-18 01:15:54 -05:00
Tony Luck
c130bd6f82 acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
ACPI 5.0 provides extensions to the EINJ mechanism to specify the
target for the error injection - by APICID for cpu related errors,
by address for memory related errors, and by segment/bus/device/function
for PCIe related errors. Also extensions for vendor specific error
injections.

Tested-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-18 01:14:17 -05:00
Len Brown
cb7971756b Merge branch 'atomicio-remove' into release 2012-01-18 00:46:30 -05:00
Len Brown
037d76f404 Merge branch 'apei' into release 2012-01-18 00:18:10 -05:00
Thomas Renninger
65b7f839ce intel_idle: Split up and provide per CPU initialization func
Function split up, should have no functional change.

Provides entry point for physically hotplugged CPUs
to initialize and activate cpuidle.

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
CC: Shaohua Li <shaohua.li@intel.com>
CC: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-17 23:59:12 -05:00
Thomas Renninger
3bd81a8710 ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
V2: Fix typo: pr->handle -> pr, here: acpi_processor_hotadd_init(pr)

This is a very small part taken from patches which afaik
are coming from Yunhong Jiang (for a Xen not a Linus repo?).

Cleanup only: no functional change.

Advantage (beside cleanup) is that other data of the pr (acpi_processor) struct
in the acpi_processor_hotadd_init() is needed later, for example a newly
introduced flag:
pr->flags.need_hotplug_init

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-17 23:58:07 -05:00
Matt Carlson
c3b5003b62 tg3: Fix single-vector MSI-X code
Kdump kernels leave MSI-X interrupts (as setup by the crashed kernel)
enabled.  However, kdump only enables one CPU in the new environment,
thus causing tg3 to abort MSI-X setup.  When the driver attempts to
enable INTA or MSI interrupt modes on a kdump kernel, interrupt
delivery fails.

This patch attempts to workaround the problem by forcing the driver
to enable a single MSI-X interrupt.  In such a configuration, the
device's multivector interrupt mode must be disabled.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:19 -05:00
Ben Pfaff
77676fdbd5 openvswitch: Fix multipart datapath dumps.
The logic to split up the list of datapaths into multiple Netlink messages
was simply wrong, causing the list to be terminated after the first part.
Only about the first 50 datapaths would be dumped.  This fixes the
problem.

Reported-by: Paul Ingram <paul@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:19 -05:00
Eric Dumazet
766e9f1be1 ipv6: fix per device IP snmp counters
In commit 4ce3c183fc (snmp: 64bit ipstats_mib for all arches), I forgot
to change the /proc/net/dev_snmp6/xxx output for IP counters.

percpu array is 64bit per counter but the folding still used the 'long'
variant, and output garbage on 32bit arches.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:18 -05:00
Linus Torvalds
6a488979f5 ARM: fixes for ARM platforms
Some fallout from the 3.3. merge window as well as a couple bug fixes
 for older preexisting bugs that seem valid to include at this time:
 
 * sched_clock changes broke picoxcell, fix included
 * BSYM bugs causing issues with thumb2-built kernels on SMP
 * Missing module.h include on msm.
 * A collection of bugfixes for samsung platforms that didn't make it into
   the first pull requests.
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Merge tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

ARM: fixes for ARM platforms

Some fallout from the 3.3. merge window as well as a couple bug fixes
for older preexisting bugs that seem valid to include at this time:

* sched_clock changes broke picoxcell, fix included
* BSYM bugs causing issues with thumb2-built kernels on SMP
* Missing module.h include on msm.
* A collection of bugfixes for samsung platforms that didn't make it into
  the first pull requests.

* tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: make BSYM macro assembly only
  ARM: highbank: remove incorrect BSYM usage
  ARM: imx: remove incorrect BSYM usage
  ARM: exynos: remove incorrect BSYM usage
  ARM: ux500: add missing ENDPROC to headsmp.S
  ARM: msm: Add missing ENDPROC to headsmp.S
  ARM: versatile: Add missing ENDPROC to headsmp.S
  ARM: EXYNOS: Invert VCLK polarity for framebuffer on ORIGEN
  ARM: S3C64XX: Fix interrupt configuration for PCA935x on Cragganmore
  ARM: S3C64XX: Fix the memory mapped GPIOs on Cragganmore
  ARM: S3C64XX: Remove hsmmc1 from Cragganmore
  ARM: S3C64XX: Remove unconditional power domain disables
  ARM: SAMSUNG: Declare struct platform_device in plat/s3c64xx-spi.h
  ARM: SAMSUNG: dma-ops.h needs mach/dma.h
  ARM: SAMSUNG: Guard against multiple inclusion of plat/dma.h
  ARM: picoxcell: fix sched_clock() cleanup fallout
  ARM: msm: vreg is a module and so needs module.h
2012-01-17 18:55:56 -08:00
Linus Torvalds
57f2685c16 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits)
  ARM: mach-shmobile: specify CHCLR registers on SH7372
  dma: shdma: fix runtime PM: clear channel buffers on reset
  dma/imx-sdma: save irq flags when use spin_lock in sdma_tx_submit
  dmaengine/ste_dma40: clear LNK on channel startup
  dmaengine: intel_mid_dma: remove legacy pm interface
  ASoC: mxs: correct 'direction' of device_prep_dma_cyclic
  dmaengine: intel_mid_dma: error path fix
  dmaengine: intel_mid_dma: locking and freeing fixes
  mtd: gpmi-nand: move to dma_transfer_direction
  mtd: fix compile error for gpmi-nand
  mmc: mxs-mmc: fix the dma_transfer_direction migration
  dmaengine: add DMA_TRANS_NONE to dma_transfer_direction
  dma: mxs-dma: Don't use CLKGATE bits in CTRL0 to disable DMA channels
  dma: mxs-dma: make mxs_dma_prep_slave_sg() multi user safe
  dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled.
  dma: mxs-dma: fix a typo in comment
  DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove
  video i.MX IPU: Fix display connections
  i.MX IPU DMA: Fix wrong burstsize settings
  dmaengine/ste_dma40: allow fixed physical channel
  ...

Fix up conflicts in drivers/dma/{Kconfig,mxs-dma.c,pl330.c}

The conflicts looked pretty trivial, but I'll ask people to verify them.
2012-01-17 18:40:24 -08:00
Linus Torvalds
488a9d0182 Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev
* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  [libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list due to broken suspend functionality.
  [libata] add DVRTD08A and DVR-215 to NOSETXFER device quirk list
  [libata] pata_bf54x: Support sg list in bmdma transfer.
  [libata] sata_fsl: fix the controller operating mode
  [libata] enable ata port async suspend
2012-01-17 18:11:38 -08:00
Al Viro
6015ff1031 x86-32: Fix build failure with AUDIT=y, AUDITSYSCALL=n
JONGMAN HEO reports:

  With current linus git (commit a25a2b84), I got following build error,

  arch/x86/kernel/vm86_32.c: In function 'do_sys_vm86':
  arch/x86/kernel/vm86_32.c:340: error: implicit declaration of function '__audit_syscall_exit'
  make[3]: *** [arch/x86/kernel/vm86_32.o] Error 1

OK, I can reproduce it (32bit allmodconfig with AUDIT=y, AUDITSYSCALL=n)

It's due to commit d7e7528bcd: "Audit: push audit success and retcode
into arch ptrace.h".

Reported-by: JONGMAN HEO <jongman.heo@samsung.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-17 18:10:11 -08:00
Benjamin Larsson
b73fa4630e [libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list
due to broken suspend functionality.

Signed-off-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:50:53 -05:00
Vladimir LAVALLADE
3a25179e06 [libata] add DVRTD08A and DVR-215 to NOSETXFER device quirk list
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:50:07 -05:00
Sonic Zhang
81b0287d34 [libata] pata_bf54x: Support sg list in bmdma transfer.
BF54x on-chip ATAPI controller allows maximum 0x1fffe bytes to be transfered
in one ATAPI transfer. So, set the max sg_tablesize to 4.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:49:28 -05:00
Jerry Huang
93272b132a [libata] sata_fsl: fix the controller operating mode
Configure the FSL SATA controller to the preferred, enterprise mode.

Signed-off-by: Yutaka Ando <r46913@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
CC: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:49:07 -05:00
Lin Ming
966f1212e1 [libata] enable ata port async suspend
This saves devices suspend/resume time.

Tested system suspend/resume with SATA IDE/AHCI mode 3 times.
Below is the time took for devices suspend/resume.

SATA mode    vanilla-kernel           patched-kernel
---------    ---------------------    ---------------------
IDE          suspend: 0.744           suspend: 0.432
             (0.716, 0.768, 0.748)    (0.440, 0.428, 0.428)

             resume: 5.084            resume: 2.209
             (5.100, 5.064, 5.088)    (2.168, 2.232, 2.228)

AHCI:        suspend: 0.725           suspend: 0.449
             (0.740, 0.708, 0.728)    (0.456, 0.448, 0.444)

             resume: 2.556            resume: 1.896
             (2.604, 2.492, 2.572)    (1.932, 1.872, 1.884)

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:48:06 -05:00
Laurent Pinchart
36be126cb0 [media] as3645a: Fix compilation by including slab.h
The as3645a driver calls kzalloc(). Include slab.h.

Reported-by: Fredrik Lingvall <fredrik.lingvall@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:07:13 -02:00
Sachin Kamat
a2e2baad60 [media] s5p-fimc: Remove linux/version.h include from fimc-mdevice.c
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:06:24 -02:00
Sachin Kamat
2bd4334121 [media] s5p-mfc: Remove linux/version.h include from s5p_mfc.c
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:06:13 -02:00
Dan Carpenter
3a9888f913 [media] ds3000: using logical && instead of bitwise &
The intent here was to test if the FE_HAS_LOCK was set.  The current
test is equivalent to "if (status) { ..."

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:05:13 -02:00
Hans Verkuil
f08aacf84f [media] v4l2-ctrls: make control names consistent
Several control names used inconsistent capitalization or were inconsistent
in other ways. I also corrected a spelling mistake and fixed four strings
that were too long (>31 characters). Harmless, but the string is cut off when
it is returned with QUERYCTRL.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:04:05 -02:00
Jiri Slaby
d43272a4e8 [media] DVB: dib0700, add support for Nova-TD LEDs
Add an override of read_status to intercept lock status. This allows
us to switch LEDs appropriately on and off with signal un/locked.

The second phase is to override sleep to properly turn off both.

This is a hackish way to achieve that.

Thanks to Mike Krufky for his help.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:02:41 -02:00
Jiri Slaby
2b05b881ec [media] DVB: dib0700, add corrected Nova-TD frontend_attach
This means cut & paste from the former f. attach. But while at it write
to the right GPIO to turn on the right LED. Also turn the other two
off jsut for sure.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:02:15 -02:00
Jiri Slaby
52fd5b2ea7 [media] DVB: dib0700, separate stk7070pd initialization
The start is common for both stk7070pd and novatd specific routine.
This is just a preparation for the next patch.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:01:55 -02:00
Jiri Slaby
9b6ba57bd4 [media] DVB: dib0700, move Nova-TD Stick to a separate set
To properly support the three LEDs which are on the stick, we need
a special handling in the ->frontend_attach function. Thus let's have
a separate ->frontend_attach instead of ifs in the common one.

The hadnling itself will be added in further patches.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:01:23 -02:00
Patrick Boettcher
68dc8bc580 [media] : add MODULE_FIRMWARE to dib0700
The dib0700 needs a binary firmware file. This patch added the MODULE_FIRMWARE-macro.

Signed-off-by: Christoph Anton Mitterer <calestyo@scientia.net>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:58:53 -02:00
Patrick Boettcher
bad321f1bb [media] DVB-CORE: remove superfluous DTV_CMDs
This small patch removes superfluous DTV_CMDs from dvb_frontend.c which were added in the initially when ISBD-T support was added.
They were there unnoticed even though compilers should have warning about those duplicates. Finally they did and now we can remove them.

Thanks to Dan Carpenter <dan.carpenter@oracle.com> for pointing that out.

Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:58:40 -02:00
Marek Szyprowski
719c174ee9 [media] s5p-jpeg: adapt to recent videobuf2 changes
queue_setup callback has been extended with struct v4l2_format *fmt
parameter in 2d86401c2c commit. This patch adds this parameter to
s5p-jpeg driver.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:45 -02:00
Kamil Debski
7f6cce69e2 [media] s5p-g2d: fixed a bug in controls setting function
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:23 -02:00
Kamil Debski
0da0a78338 [media] s5p-mfc: Fix volatile controls setup
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:04 -02:00
Julia Lawall
bb869368f3 [media] drivers/media/video/s5p-mfc/s5p_mfc.c: adjust double test
Rewrite a duplicated test to test the correct value

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E;
@@

(
* E
  || ... || E
|
* E
  && ... && E
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:53:46 -02:00
Julia Lawall
b1aa60892e [media] drivers/media/video/s5p-fimc/fimc-capture.c: adjust double test
Rewrite a duplicated test to test the correct value

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E;
@@

(
* E
  || ... || E
|
* E
  && ... && E
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:53:34 -02:00
Sachin Kamat
53e5ab946a [media] s5p-fimc: Fix incorrect control ID assignment
This patch fixes the mismatch between control IDs (CID) and controls
for hflip, vflip and rotate.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:53:12 -02:00
Linus Torvalds
a25a2b8409 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  integrity: digital signature config option name change
  lib: Removed MPILIB, MPILIB_EXTRA, and SIGNATURE prompts
  lib: MPILIB Kconfig description update
  lib: digital signature dependency fix
  lib: digital signature config option name change
  encrypted-keys: fix rcu and sparse messages
  keys: fix trusted/encrypted keys sparse rcu_assign_pointer messages
  KEYS: Add missing smp_rmb() primitives to the keyring search code
  TOMOYO: Accept \000 as a valid character.
  security: update MAINTAINERS file with new git repo
2012-01-17 16:43:39 -08:00
Grant Likely
265fe02b6f gpio/it8761e: Restrict it8761e gpio driver to x86.
This driver does an unconditional read of io space during module init which
causes a bad dereference on ARM.  It looks to me like this is an x86 only
drivers, so restrict it to only compile on x86.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Denis Turischev <denis@compulab.co.il>
2012-01-17 17:43:09 -07:00
Linus Torvalds
f429ee3b80 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit: (29 commits)
  audit: no leading space in audit_log_d_path prefix
  audit: treat s_id as an untrusted string
  audit: fix signedness bug in audit_log_execve_info()
  audit: comparison on interprocess fields
  audit: implement all object interfield comparisons
  audit: allow interfield comparison between gid and ogid
  audit: complex interfield comparison helper
  audit: allow interfield comparison in audit rules
  Kernel: Audit Support For The ARM Platform
  audit: do not call audit_getname on error
  audit: only allow tasks to set their loginuid if it is -1
  audit: remove task argument to audit_set_loginuid
  audit: allow audit matching on inode gid
  audit: allow matching on obj_uid
  audit: remove audit_finish_fork as it can't be called
  audit: reject entry,always rules
  audit: inline audit_free to simplify the look of generic code
  audit: drop audit_set_macxattr as it doesn't do anything
  audit: inline checks for not needing to collect aux records
  audit: drop some potentially inadvisable likely notations
  ...

Use evil merge to fix up grammar mistakes in Kconfig file.

Bad speling and horrible grammar (and copious swearing) is to be
expected, but let's keep it to commit messages and comments, rather than
expose it to users in config help texts or printouts.
2012-01-17 16:41:31 -08:00
Linus Torvalds
22b4eb5e31 Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: cleanup xfs_file_aio_write
  xfs: always return with the iolock held from xfs_file_aio_write_checks
  xfs: remove the i_new_size field in struct xfs_inode
  xfs: remove the i_size field in struct xfs_inode
  xfs: replace i_pin_wait with a bit waitqueue
  xfs: replace i_flock with a sleeping bitlock
  xfs: make i_flags an unsigned long
  xfs: remove the if_ext_max field in struct xfs_ifork
  xfs: remove the unused dm_attrs structure
  xfs: cleanup xfs_iomap_eof_align_last_fsb
  xfs: remove xfs_itruncate_data
2012-01-17 15:54:56 -08:00
Linus Torvalds
d65773b22b Merge branch 'btrfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'btrfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  btrfs: take allocation of ->tree_root into open_ctree()
  btrfs: let ->s_fs_info point to fs_info, not root...
  btrfs: consolidate failure exits in btrfs_mount() a bit
  btrfs: make free_fs_info() call ->kill_sb() unconditional
  btrfs: merge free_fs_info() calls on fill_super failures
  btrfs: kill pointless reassignment of ->s_fs_info in btrfs_fill_super()
  btrfs: make open_ctree() return int
  btrfs: sanitizing ->fs_info, part 5
  btrfs: sanitizing ->fs_info, part 4
  btrfs: sanitizing ->fs_info, part 3
  btrfs: sanitizing ->fs_info, part 2
  btrfs: sanitizing ->fs_info, part 1
  btrfs: fix a deadlock in btrfs_scan_one_device()
  btrfs: fix mount/umount race
  btrfs: get ->kill_sb() of its own
  btrfs: preparation to fixing mount/umount race
2012-01-17 15:52:51 -08:00
Linus Torvalds
f9156c7288 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (62 commits)
  Btrfs: use larger system chunks
  Btrfs: add a delalloc mutex to inodes for delalloc reservations
  Btrfs: space leak tracepoints
  Btrfs: protect orphan block rsv with spin_lock
  Btrfs: add allocator tracepoints
  Btrfs: don't call btrfs_throttle in file write
  Btrfs: release space on error in page_mkwrite
  Btrfs: fix btrfsck error 400 when truncating a compressed
  Btrfs: do not use btrfs_end_transaction_throttle everywhere
  Btrfs: add balance progress reporting
  Btrfs: allow for resuming restriper after it was paused
  Btrfs: allow for canceling restriper
  Btrfs: allow for pausing restriper
  Btrfs: add skip_balance mount option
  Btrfs: recover balance on mount
  Btrfs: save balance parameters to disk
  Btrfs: soft profile changing mode (aka soft convert)
  Btrfs: implement online profile changing
  Btrfs: do not reduce profile in do_chunk_alloc()
  Btrfs: virtual address space subset filter
  ...

Fix up trivial conflict in fs/btrfs/ioctl.c due to the use of the new
mnt_drop_write_file() helper.
2012-01-17 15:49:54 -08:00
Linus Torvalds
68f30fbee1 x86, tsc: Fix SMI induced variation in quick_pit_calibrate()
pit_expect_msb() returns success wrongly in the below SMI scenario:

a. pit_verify_msb() has not yet seen the MSB transition.

b. we are close to the MSB transition though and got a SMI immediately after
   returning from pit_verify_msb() which didn't see the MSB transition. PIT MSB
   transition has happened somewhere during SMI execution.

c. returned from SMI and we noted down the 'tsc', saw the pit MSB change now and
   exited the loop to calculate 'deltatsc'. Instead of noting the TSC at the MSB
   transition, we are way off because of the SMI.  And as the SMI happened
   between the pit_verify_msb() and before the 'tsc' is recorded in the
   for loop, 'delattsc' (d1/d2 in quick_pit_calibrate()) will be small and
   quick_pit_calibrate() will not notice this error.

Depending on whether SMI disturbance happens while computing d1 or d2, we will
see the TSC calibrated value smaller or bigger than the expected value. As a
result, in a cluster we were seeing a variation of approximately +/- 20MHz in
the calibrated values, resulting in NTP failures.

  [ As far as the SMI source is concerned, this is a periodic SMI that gets
    disabled after ACPI is enabled by the OS. But the TSC calibration happens
    before the ACPI is enabled. ]

To address this, change pit_expect_msb() so that

 - the 'tsc' is the TSC in between the two reads that read the MSB
change from the PIT (same as before)

 - the 'delta' is the difference in TSC from *before* the MSB changed
to *after* the MSB changed.

Now the delta is twice as big as before (it covers four PIT accesses,
roughly 4us) and quick_pit_calibrate() will loop a bit longer to get
the calibrated value with in the 500ppm precision. As the delta (d1/d2)
covers four PIT accesses, actual calibrated result might be closer to
250ppm precision.

As the loop now takes longer to stabilize, double MAX_QUICK_PIT_MS to 50.

SMI disturbance will showup as much larger delta's and the loop will take
longer than usual for the result to be with in the accepted precision. Or will
fallback to slow PIT calibration if it takes more than 50msec.

Also while we are at this, remove the calibration correction that aims to
get the result to the middle of the error bars. We really don't know which
direction to correct into, so remove it.

Reported-and-tested-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1326843337.5291.4.camel@sbsiddha-mobl2
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-01-17 15:46:51 -08:00
Dmitry Kasatkin
f1be242c95 integrity: digital signature config option name change
Similar to SIGNATURE, rename INTEGRITY_DIGSIG to INTEGRITY_SIGNATURE.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:46:27 +11:00
Dmitry Kasatkin
2e5f094b9d lib: Removed MPILIB, MPILIB_EXTRA, and SIGNATURE prompts
As modules are expected to select MPILIB, MPILIB_EXTRA, and SIGNATURE,
removed Kconfig prompts.

Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:46:26 +11:00
Dmitry Kasatkin
68adcad570 lib: MPILIB Kconfig description update
It was reported that description of the MPILIB_EXTRA is confusing.
Indeed it was copy-paste typo. It is fixed here.

Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:46:24 +11:00
Dmitry Kasatkin
be440ec773 lib: digital signature dependency fix
Randy Dunlap reported build break:

ERROR: "crypto_alloc_shash" [lib/digsig.ko] undefined!
ERROR: "crypto_shash_final" [lib/digsig.ko] undefined!
ERROR: "crypto_shash_update" [lib/digsig.ko] undefined!
ERROR: "crypto_destroy_tfm" [lib/digsig.ko] undefined!

Added CRYPTO dependency and selected SHA1 algorithm.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:46:23 +11:00
Dmitry Kasatkin
5e8898e97a lib: digital signature config option name change
It was reported that DIGSIG is confusing name for digital signature
module. It was suggested to rename DIGSIG to SIGNATURE.

Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:46:21 +11:00
Mimi Zohar
6ac6172a93 encrypted-keys: fix rcu and sparse messages
Enabling CONFIG_PROVE_RCU and CONFIG_SPARSE_RCU_POINTER resulted in
"suspicious rcu_dereference_check() usage!" and "incompatible types
in comparison expression (different address spaces)" messages.

Access the masterkey directly when holding the rwsem.

Changelog v1:
- Use either rcu_read_lock()/rcu_derefence_key()/rcu_read_unlock()
or remove the unnecessary rcu_derefence() - David Howells

Reported-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:41:30 +11:00
Mimi Zohar
ee0b31a25a keys: fix trusted/encrypted keys sparse rcu_assign_pointer messages
Define rcu_assign_keypointer(), which uses the key payload.rcudata instead
of payload.data, to resolve the CONFIG_SPARSE_RCU_POINTER message:
"incompatible types in comparison expression (different address spaces)"

Replace the rcu_assign_pointer() calls in encrypted/trusted keys with
rcu_assign_keypointer().

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:41:29 +11:00
David Howells
efde8b6e16 KEYS: Add missing smp_rmb() primitives to the keyring search code
Add missing smp_rmb() primitives to the keyring search code.

When keyring payloads are appended to without replacement (thus using up spare
slots in the key pointer array), an smp_wmb() is issued between the pointer
assignment and the increment of the key count (nkeys).

There should be corresponding read barriers between the read of nkeys and
dereferences of keys[n] when n is dependent on the value of nkeys.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
2012-01-18 10:41:27 +11:00