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Both times() and clock_gettime(CLOCK_PROCESS_CPUTIME_ID) have scalability
issues on large systems, due to both functions being serialized with a
lock.
The lock protects against reporting a wrong value, due to a thread in the
task group exiting, its statistics reporting up to the signal struct, and
that exited task's statistics being counted twice (or not at all).
Protecting that with a lock results in times() and clock_gettime() being
completely serialized on large systems.
This can be fixed by using a seqlock around the events that gather and
propagate statistics. As an additional benefit, the protection code can
be moved into thread_group_cputime(), slightly simplifying the calling
functions.
In the case of posix_cpu_clock_get_task() things can be simplified a
lot, because the calling function already ensures that the task sticks
around, and the rest is now taken care of in thread_group_cputime().
This way the statistics reporting code can run lockless.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Daeseok Youn <daeseok.youn@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guillaume Morin <guillaume@morinfr.org>
Cc: Ionut Alexa <ionut.m.alexa@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Michal Schmidt <mschmidt@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: umgwanakikbuti@gmail.com
Cc: fweisbec@gmail.com
Cc: srao@redhat.com
Cc: lwoodman@redhat.com
Cc: atheurer@redhat.com
Link: http://lkml.kernel.org/r/20140816134010.26a9b572@annuminas.surriel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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patches, and to refresh the tree
Linux 3.17-rc4
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These are regression fixes (ACPI sysfs, ACPI video, suspend test),
ACPI cpuidle deadlock fix, missing runtime validation of ACPI _DSD
output, a fix and a new CPU ID for the RAPL driver, new blacklist
entry for the ACPI EC driver and a couple of trivial cleanups
(intel_pstate and generic PM domains).
Specifics:
- Fix for recently broken test_suspend= command line argument (Rafael
Wysocki).
- Fixes for regressions related to the ACPI video driver caused by
switching the default to native backlight handling in 3.16 from
Hans de Goede.
- Fix for a sysfs attribute of ACPI device objects that returns stale
values sometimes due to the fact that they are cached instead of
executing the appropriate method (_SUN) every time (broken in
3.14). From Yasuaki Ishimatsu.
- Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock in the
ACPI processor driver from Jiri Kosina.
- Runtime output validation for the ACPI _DSD device configuration
object missing from the support for it that has been introduced
recently. From Mika Westerberg.
- Fix for an unuseful and misleading RAPL (Running Average Power
Limit) domain detection message in the RAPL driver from Jacob Pan.
- New Intel Haswell CPU ID for the RAPL driver from Jason Baron.
- New Clevo W350etq blacklist entry for the ACPI EC driver from Lan
Tianyu.
- Cleanup for the intel_pstate driver and the core generic PM domains
code from Gabriele Mazzotta and Geert Uytterhoeven"
* tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
ACPI / scan: not cache _SUN value in struct acpi_device_pnp
cpufreq: intel_pstate: Remove unneeded variable
powercap / RAPL: change domain detection message
powercap / RAPL: add support for CPU model 0x3f
PM / domains: Make generic_pm_domain.name const
PM / sleep: Fix test_suspend= command line option
ACPI / EC: Add msi quirk for Clevo W350etq
ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC
ACPI / video: Add a disable_native_backlight quirk
ACPI / video: Fix use_native_backlight selection logic
ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
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* pm-sleep:
PM / sleep: Fix test_suspend= command line option
* powercap:
powercap / RAPL: change domain detection message
powercap / RAPL: add support for CPU model 0x3f
* pm-domains:
PM / domains: Make generic_pm_domain.name const
* pm-cpufreq:
cpufreq: intel_pstate: Remove unneeded variable
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The _SUN device indentification object is not guaranteed to return
the same value every time it is executed, so we should not cache its
return value, but rather execute it every time as needed. If it is
cached, an incorrect stale value may be used in some situations.
This issue was exposed by commit 202317a573b2 (ACPI / scan: Add
acpi_device objects for all device nodes in the namespace). Fix it
by avoiding to cache the return value of _SUN.
Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Three fixlets from the timer departement:
- Update the timekeeper before updating vsyscall and pvclock. This
fixes the kvm-clock regression reported by Chris and Paolo.
- Use the proper irq work interface from NMI. This fixes the
regression reported by Catalin and Dave.
- Clarify the compat_nanosleep error handling mechanism to avoid
future confusion"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Update timekeeper before updating vsyscall and pvclock
compat: nanosleep: Clarify error handling
nohz: Restore NMI safe local irq work for local nohz kick
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The local nohz kick is currently used by perf which needs it to be
NMI-safe. Recent commit though (7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9)
changed its implementation to fire the local kick using the remote kick
API. It was convenient to make the code more generic but the remote kick
isn't NMI-safe.
As a result:
WARNING: CPU: 3 PID: 18062 at kernel/irq_work.c:72 irq_work_queue_on+0x11e/0x140()
CPU: 3 PID: 18062 Comm: trinity-subchil Not tainted 3.16.0+ #34
0000000000000009 00000000903774d1 ffff880244e06c00 ffffffff9a7f1e37
0000000000000000 ffff880244e06c38 ffffffff9a0791dd ffff880244fce180
0000000000000003 ffff880244e06d58 ffff880244e06ef8 0000000000000000
Call Trace:
<NMI> [<ffffffff9a7f1e37>] dump_stack+0x4e/0x7a
[<ffffffff9a0791dd>] warn_slowpath_common+0x7d/0xa0
[<ffffffff9a07930a>] warn_slowpath_null+0x1a/0x20
[<ffffffff9a17ca1e>] irq_work_queue_on+0x11e/0x140
[<ffffffff9a10a2c7>] tick_nohz_full_kick_cpu+0x57/0x90
[<ffffffff9a186cd5>] __perf_event_overflow+0x275/0x350
[<ffffffff9a184f80>] ? perf_event_task_disable+0xa0/0xa0
[<ffffffff9a01a4cf>] ? x86_perf_event_set_period+0xbf/0x150
[<ffffffff9a187934>] perf_event_overflow+0x14/0x20
[<ffffffff9a020386>] intel_pmu_handle_irq+0x206/0x410
[<ffffffff9a0b54d3>] ? arch_vtime_task_switch+0x63/0x130
[<ffffffff9a01937b>] perf_event_nmi_handler+0x2b/0x50
[<ffffffff9a007b72>] nmi_handle+0xd2/0x390
[<ffffffff9a007aa5>] ? nmi_handle+0x5/0x390
[<ffffffff9a0d131b>] ? lock_release+0xab/0x330
[<ffffffff9a008062>] default_do_nmi+0x72/0x1c0
[<ffffffff9a0c925f>] ? cpuacct_account_field+0xcf/0x200
[<ffffffff9a008268>] do_nmi+0xb8/0x100
Lets fix this by restoring the use of local irq work for the nohz local
kick.
Reported-by: Catalin Iacob <iacobcatalin@gmail.com>
Reported-and-tested-by: Dave Jones <davej@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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Pull mtd fixes from Brian Norris:
"Two trivial MTD updates for 3.17-rc4:
- a tiny comment tweak, to kill a bunch of DocBook warnings added
during the merge window
- a small fixup to the OTP routines' error handling"
* tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd:
mtd: nand: fix DocBook warnings on nand_sdr_timings doc
mtd: cfi_cmdset_0002: check return code for get_chip()
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Change the comment type (from /** to /*) to prevent DocBook from
complaining about missing description for nand_sdr_timings fields.
There is currently no need in documenting those fields because they are
fully described in the ONFI specification (which is pointed out in the
comment).
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator documentation fixes from Mark Brown:
"All the fixes people have found for the regulator API have been
documentation fixes, avoiding warnings while building the kerneldoc,
fixing some errors in one of the DT bindings documents and fixing some
typos in the header"
* tag 'regulator-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: fix kernel-doc warnings in header files
regulator: Proofread documentation
regulator: tps65090: Fix tps65090 typos in example
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'regulator/fix/tps65090' into regulator-linus
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Fix kernel-doc warnings in regulator header files:
Warning(..//include/linux/regulator/machine.h:140): No description found for parameter 'ramp_disable'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'linear_ranges'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'n_linear_ranges'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
- some documentation sync
- resource leak in the bt8xx driver
- again fix the way varargs are used to handle the optional flags on
the gpiod_* accessors. Now hopefully nailed the entire problem.
* tag 'gpio-v3.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: move varargs hack outside #ifdef GPIOLIB
gpio: bt8xx: fix release of managed resources
Documentation: gpio: documentation for optional getters functions
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commit 39b2bbe3d715cf5013b5c48695ccdd25bd3bf120
"gpio: add flags argument to gpiod_get*() functions"
added a dynamic flags argument to all the GPIOD getter
functions, however this did not cover the stubs so
when people used gpiod stubs to compile out descriptor
code, compilation failed.
Solve this by:
- Also rename all the stub functions __gpiod_*
- Moving the vararg hack outside of #ifdef CONFIG_GPIOLIB
so these will always be available.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This time it contains a bunch of small ASoC fixes that slipped from in
previous updates, in addition to the usual HD-audio fixes and the
regression fixes for FireWire updates in 3.17.
All commits are reasonably small fixes"
* tag 'sound-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix COEF setups for ALC1150 codec
ASoC: simple-card: Fix bug of wrong decrement DT node's refcount
ALSA: hda - Fix digital mic on Acer Aspire 3830TG
ASoC: omap-twl4030: Fix typo in 2nd dai link's platform_name
ALSA: firewire-lib/dice: add arrangements of PCM pointer and interrupts for Dice quirk
ALSA: dice: fix wrong channel mappping at higher sampling rate
ASoC: cs4265: Fix setting of functional mode and clock divider
ASoC: cs4265: Fix clock rates in clock map table
ASoC: rt5677: correct mismatch widget name
ASoC: rt5640: Do not allow regmap to use bulk read-write operations
ASoC: tegra: Fix typo in include guard
ASoC: da732x: Fix typo in include guard
ASoC: core: fix .info for SND_SOC_BYTES_TLV
ASoC: rcar: Use && instead of & for boolean expressions
ASoC: Use dev_set_name() instead of init_name
ASoC: axi: Fix ADI AXI SPDIF specification
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Commit 7523a271 - "ASoC: core: add a helper for extended byte controls using
TLV" introduced support for TLV byte controls but had a typo for the info
function, so fix the same
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs bug fixes from Jaegeuk Kim:
"This series includes patches to:
- fix recovery routines
- fix bugs related to inline_data/xattr
- fix when casting the dentry names
- handle EIO or ENOMEM correctly
- fix memory leak
- fix lock coverage"
* tag 'for-f2fs-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (28 commits)
f2fs: reposition unlock_new_inode to prevent accessing invalid inode
f2fs: fix wrong casting for dentry name
f2fs: simplify by using a literal
f2fs: truncate stale block for inline_data
f2fs: use macro for code readability
f2fs: introduce need_do_checkpoint for readability
f2fs: fix incorrect calculation with total/free inode num
f2fs: remove rename and use rename2
f2fs: skip if inline_data was converted already
f2fs: remove rewrite_node_page
f2fs: avoid double lock in truncate_blocks
f2fs: prevent checkpoint during roll-forward
f2fs: add WARN_ON in f2fs_bug_on
f2fs: handle EIO not to break fs consistency
f2fs: check s_dirty under cp_mutex
f2fs: unlock_page when node page is redirtied out
f2fs: introduce f2fs_cp_error for readability
f2fs: give a chance to mount again when encountering errors
f2fs: trigger release_dirty_inode in f2fs_put_super
f2fs: don't skip checkpoint if there is no dirty node pages
...
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This patch introduces DEF_NIDS_PER_INODE/GET_ORPHAN_BLOCKS/F2FS_CP_PACKS macro
instead of numbers in code for readability.
change log from v1:
o fix typo pointed out by Jaegeuk Kim.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Theoretically, our total inodes number is the same as total node number, but
there are three node ids are reserved in f2fs, they are 0, 1 (node nid), and 2
(meta nid), and they should never be used by user, so our total/free inode
number calculated in ->statfs is wrong.
This patch indroduces F2FS_RESERVED_NODE_NUM and then fixes this issue by
recalculating total/free inode number with the macro.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This reverts commit 8b37e1bef5a6b60e949e28a4db3006e4b00bd758.
It's broken as it changes led_blink_set() in a way that it can now sleep
(while synchronously waiting for workqueue to be cancelled). That's a
problem, because it's possible that this function gets called from atomic
context (tpt_trig_timer() takes a readlock and thus disables preemption).
This has been brought up 3 weeks ago already [1] but no proper fix has
materialized, and I keep seeing the problem since 3.17-rc1.
[1] https://lkml.org/lkml/2014/8/16/128
BUG: sleeping function called from invalid context at kernel/workqueue.c:2650
in_atomic(): 1, irqs_disabled(): 0, pid: 2335, name: wpa_supplicant
5 locks held by wpa_supplicant/2335:
#0: (rtnl_mutex){+.+.+.}, at: [<ffffffff814c7c92>] rtnl_lock+0x12/0x20
#1: (&wdev->mtx){+.+.+.}, at: [<ffffffffc06e649c>] cfg80211_mgd_wext_siwessid+0x5c/0x180 [cfg80211]
#2: (&local->mtx){+.+.+.}, at: [<ffffffffc0817dea>] ieee80211_prep_connection+0x17a/0x9a0 [mac80211]
#3: (&local->chanctx_mtx){+.+.+.}, at: [<ffffffffc08081ed>] ieee80211_vif_use_channel+0x5d/0x2a0 [mac80211]
#4: (&trig->leddev_list_lock){.+.+..}, at: [<ffffffffc081e68c>] tpt_trig_timer+0xec/0x170 [mac80211]
CPU: 0 PID: 2335 Comm: wpa_supplicant Not tainted 3.17.0-rc3 #1
Hardware name: LENOVO 7470BN2/7470BN2, BIOS 6DET38WW (2.02 ) 12/19/2008
ffff8800360b5a50 ffff8800751f76d8 ffffffff8159e97f ffff8800360b5a30
ffff8800751f76e8 ffffffff810739a5 ffff8800751f77b0 ffffffff8106862f
ffffffff810685d0 0aa2209200000000 ffff880000000004 ffff8800361c59d0
Call Trace:
[<ffffffff8159e97f>] dump_stack+0x4d/0x66
[<ffffffff810739a5>] __might_sleep+0xe5/0x120
[<ffffffff8106862f>] flush_work+0x5f/0x270
[<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
[<ffffffff810945ca>] ? mark_held_locks+0x6a/0x90
[<ffffffff81068a5f>] ? __cancel_work_timer+0x6f/0x100
[<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
[<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
[<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
[<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
[<ffffffffc081ecdd>] ieee80211_mod_tpt_led_trig+0x9d/0x160 [mac80211]
[<ffffffffc07e4278>] __ieee80211_recalc_idle+0x98/0x140 [mac80211]
[<ffffffffc07e59ce>] ieee80211_idle_off+0xe/0x10 [mac80211]
[<ffffffffc0804e5b>] ieee80211_add_chanctx+0x3b/0x220 [mac80211]
[<ffffffffc08062e4>] ieee80211_new_chanctx+0x44/0xf0 [mac80211]
[<ffffffffc080838a>] ieee80211_vif_use_channel+0x1fa/0x2a0 [mac80211]
[<ffffffffc0817df8>] ieee80211_prep_connection+0x188/0x9a0 [mac80211]
[<ffffffffc081c246>] ieee80211_mgd_auth+0x256/0x2e0 [mac80211]
[<ffffffffc07eab33>] ieee80211_auth+0x13/0x20 [mac80211]
[<ffffffffc06cb006>] cfg80211_mlme_auth+0x106/0x270 [cfg80211]
[<ffffffffc06ce085>] cfg80211_conn_do_work+0x155/0x3b0 [cfg80211]
[<ffffffffc06cf670>] cfg80211_connect+0x3f0/0x540 [cfg80211]
[<ffffffffc06e6148>] cfg80211_mgd_wext_connect+0x158/0x1f0 [cfg80211]
[<ffffffffc06e651e>] cfg80211_mgd_wext_siwessid+0xde/0x180 [cfg80211]
[<ffffffffc06e36c0>] ? cfg80211_wext_giwessid+0x50/0x50 [cfg80211]
[<ffffffffc06e36dd>] cfg80211_wext_siwessid+0x1d/0x40 [cfg80211]
[<ffffffff81584d0c>] ioctl_standard_iw_point+0x14c/0x3e0
[<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[<ffffffff8158502a>] ioctl_standard_call+0x8a/0xd0
[<ffffffff81584fa0>] ? ioctl_standard_iw_point+0x3e0/0x3e0
[<ffffffff81584b76>] wireless_process_ioctl.constprop.10+0xb6/0x100
[<ffffffff8158521d>] wext_handle_ioctl+0x5d/0xb0
[<ffffffff814cfb29>] dev_ioctl+0x329/0x620
[<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[<ffffffff8149c7f2>] sock_ioctl+0x142/0x2e0
[<ffffffff811b0140>] do_vfs_ioctl+0x300/0x520
[<ffffffff815a67fb>] ? sysret_check+0x1b/0x56
[<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
[<ffffffff811b03e1>] SyS_ioctl+0x81/0xa0
[<ffffffff815a67d6>] system_call_fastpath+0x1a/0x1f
wlan0: send auth to 00:0b:6b:3c:8c:e4 (try 1/3)
wlan0: authenticated
wlan0: associate with 00:0b:6b:3c:8c:e4 (try 1/3)
wlan0: RX AssocResp from 00:0b:6b:3c:8c:e4 (capab=0x431 status=0 aid=2)
wlan0: associated
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
cfg80211: Calling CRDA for country: NA
wlan0: Limiting TX power to 27 (27 - 0) dBm as advertised by 00:0b:6b:3c:8c:e4
=================================
[ INFO: inconsistent lock state ]
3.17.0-rc3 #1 Not tainted
---------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
((&(&led_cdev->blink_work)->work)){+.?...}, at: [<ffffffff810685d0>] flush_work+0x0/0x270
{SOFTIRQ-ON-W} state was registered at:
[<ffffffff81094dbe>] __lock_acquire+0x30e/0x1a30
[<ffffffff81096c81>] lock_acquire+0x91/0x110
[<ffffffff81068608>] flush_work+0x38/0x270
[<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
[<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
[<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
[<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
[<ffffffffc081ecdd>] ieee80211_mod_tpt_led_trig+0x9d/0x160 [mac80211]
[<ffffffffc07e4278>] __ieee80211_recalc_idle+0x98/0x140 [mac80211]
[<ffffffffc07e59ce>] ieee80211_idle_off+0xe/0x10 [mac80211]
[<ffffffffc0804e5b>] ieee80211_add_chanctx+0x3b/0x220 [mac80211]
[<ffffffffc08062e4>] ieee80211_new_chanctx+0x44/0xf0 [mac80211]
[<ffffffffc080838a>] ieee80211_vif_use_channel+0x1fa/0x2a0 [mac80211]
[<ffffffffc0817df8>] ieee80211_prep_connection+0x188/0x9a0 [mac80211]
[<ffffffffc081c246>] ieee80211_mgd_auth+0x256/0x2e0 [mac80211]
[<ffffffffc07eab33>] ieee80211_auth+0x13/0x20 [mac80211]
[<ffffffffc06cb006>] cfg80211_mlme_auth+0x106/0x270 [cfg80211]
[<ffffffffc06ce085>] cfg80211_conn_do_work+0x155/0x3b0 [cfg80211]
[<ffffffffc06cf670>] cfg80211_connect+0x3f0/0x540 [cfg80211]
[<ffffffffc06e6148>] cfg80211_mgd_wext_connect+0x158/0x1f0 [cfg80211]
[<ffffffffc06e651e>] cfg80211_mgd_wext_siwessid+0xde/0x180 [cfg80211]
[<ffffffffc06e36dd>] cfg80211_wext_siwessid+0x1d/0x40 [cfg80211]
[<ffffffff81584d0c>] ioctl_standard_iw_point+0x14c/0x3e0
[<ffffffff8158502a>] ioctl_standard_call+0x8a/0xd0
[<ffffffff81584b76>] wireless_process_ioctl.constprop.10+0xb6/0x100
[<ffffffff8158521d>] wext_handle_ioctl+0x5d/0xb0
[<ffffffff814cfb29>] dev_ioctl+0x329/0x620
[<ffffffff8149c7f2>] sock_ioctl+0x142/0x2e0
[<ffffffff811b0140>] do_vfs_ioctl+0x300/0x520
[<ffffffff811b03e1>] SyS_ioctl+0x81/0xa0
[<ffffffff815a67d6>] system_call_fastpath+0x1a/0x1f
irq event stamp: 493416
hardirqs last enabled at (493416): [<ffffffff81068a5f>] __cancel_work_timer+0x6f/0x100
hardirqs last disabled at (493415): [<ffffffff81067e9f>] try_to_grab_pending+0x1f/0x160
softirqs last enabled at (493408): [<ffffffff81053ced>] _local_bh_enable+0x1d/0x50
softirqs last disabled at (493409): [<ffffffff81054c75>] irq_exit+0xa5/0xb0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock((&(&led_cdev->blink_work)->work));
<Interrupt>
lock((&(&led_cdev->blink_work)->work));
*** DEADLOCK ***
2 locks held by swapper/0/0:
#0: (((&tpt_trig->timer))){+.-...}, at: [<ffffffff810b4c50>] call_timer_fn+0x0/0x180
#1: (&trig->leddev_list_lock){.+.?..}, at: [<ffffffffc081e68c>] tpt_trig_timer+0xec/0x170 [mac80211]
stack backtrace:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.17.0-rc3 #1
Hardware name: LENOVO 7470BN2/7470BN2, BIOS 6DET38WW (2.02 ) 12/19/2008
ffffffff8246eb30 ffff88007c203b00 ffffffff8159e97f ffffffff81a194c0
ffff88007c203b50 ffffffff81599c29 0000000000000001 ffffffff00000001
ffff880000000000 0000000000000006 ffffffff81a194c0 ffffffff81093ad0
Call Trace:
<IRQ> [<ffffffff8159e97f>] dump_stack+0x4d/0x66
[<ffffffff81599c29>] print_usage_bug+0x1f4/0x205
[<ffffffff81093ad0>] ? check_usage_backwards+0x140/0x140
[<ffffffff810944d3>] mark_lock+0x223/0x2b0
[<ffffffff81094d60>] __lock_acquire+0x2b0/0x1a30
[<ffffffff81096c81>] lock_acquire+0x91/0x110
[<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
[<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
[<ffffffff81068608>] flush_work+0x38/0x270
[<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
[<ffffffff810945ca>] ? mark_held_locks+0x6a/0x90
[<ffffffff81068a5f>] ? __cancel_work_timer+0x6f/0x100
[<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
[<ffffffff8109469d>] ? trace_hardirqs_on_caller+0xad/0x1c0
[<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
[<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
[<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
[<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
[<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
[<ffffffff810b4cc5>] call_timer_fn+0x75/0x180
[<ffffffff810b4c50>] ? process_timeout+0x10/0x10
[<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
[<ffffffff810b50ac>] run_timer_softirq+0x1fc/0x2f0
[<ffffffff81054805>] __do_softirq+0x115/0x2e0
[<ffffffff81054c75>] irq_exit+0xa5/0xb0
[<ffffffff810049b3>] do_IRQ+0x53/0xf0
[<ffffffff815a74af>] common_interrupt+0x6f/0x6f
<EOI> [<ffffffff8147b56e>] ? cpuidle_enter_state+0x6e/0x180
[<ffffffff8147b732>] cpuidle_enter+0x12/0x20
[<ffffffff8108bba0>] cpu_startup_entry+0x330/0x360
[<ffffffff8158fb51>] rest_init+0xc1/0xd0
[<ffffffff8158fa90>] ? csum_partial_copy_generic+0x170/0x170
[<ffffffff81af3ff2>] start_kernel+0x44f/0x45a
[<ffffffff81af399c>] ? set_init_arg+0x53/0x53
[<ffffffff81af35ad>] x86_64_start_reservations+0x2a/0x2c
[<ffffffff81af36a0>] x86_64_start_kernel+0xf1/0xf4
Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Here's the weekly batch of fixes from arm-soc.
The delta is a largeish negative delta, due to revert of SMP support
for Broadcom's STB SoC -- it was accidentally merged before some
issues had been addressed, so they will make a new attempt for 3.18.
I didn't see a need for a full revert of the whole platform due to
this, we're keeping the rest enabled.
The rest is mostly:
- a handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
- some MTD/NAND fixes for OMAP
- minor DT fixes for shmobile
- warning fix for UP builds on vexpress/spc
There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
so it can boot. Drivers and the rest had landed for 3.17, and it's
small and isolated so it made sense to pick up now even if it's not a
bugfix"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
vexpress/spc: fix a build warning on array bounds
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
MAINTAINERS: catch special Rockchip code locations
ARM: dts: microsom-ar8035: MDIO pad must be set open drain
ARM: dts: omap54xx-clocks: Fix the l3 and l4 clock rates
ARM: brcmstb: revert SMP support
ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
ARM: dts: Enable UART wake-up events for beagleboard
ARM: dts: Remove twl6030 clk32g "regulator"
ARM: OMAP2+: omap_device: remove warning that clk alias already exists
ARM: OMAP: fix %d confusingly prefixed with 0x in format string
ARM: dts: DRA7: fix interrupt-cells for GPIO
mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
ARM: dts: omap3430-sdp: Revert to using software ECC for NAND
ARM: OMAP2+: GPMC: Support Software ECC scheme via DT
mtd: nand: omap: Revert to using software ECC by default
ARM: dts: hummingboard/cubox-i: change SPDIF output to be more descriptive
ARM: dts: hummingboard/cubox-i: add USB OC pinctrl configuration
ARM: shmobile: r8a7791: add missing 0x0100 for SDCKCR
...
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For v3.12 and prior, 1-bit Hamming code ECC via software was the
default choice. Commit c66d039197e4 in v3.13 changed the behaviour
to use 1-bit Hamming code via Hardware using a different ECC layout
i.e. (ROM code layout) than what is used by software ECC.
This ECC layout change causes NAND filesystems created in v3.12
and prior to be unusable in v3.13 and later. So revert back to
using software ECC by default if an ECC scheme is not explicitely
specified.
This defect can be observed on the following boards during legacy boot
-omap3beagle
-omap3touchbook
-overo
-am3517crane
-devkit8000
-ldp
-3430sdp
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi bugfixes from Mark Brown:
"A smattering of bug fixes for the SPI subsystem, all in driver code
which has seen active work recently and none of them with any great
global impact.
There's also a new ACPI ID for the pxa2xx driver which required no
code changes and the addition of kerneldoc for some structure fields
that were missing it and generating warnings during documentation
builds as a result"
* tag 'spi-v3.17-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sh-msiof: Fix transmit-only DMA transfers
spi/rockchip: Avoid accidentally turning off the clock
spi: dw: fix kernel crash due to NULL pointer dereference
spi: dw-pci: fix bug when regs left uninitialized
spi: davinci: fix SPI_NO_CS functionality
spi/rockchip: fixup incorrect dma direction setting
spi/pxa2xx: Add ACPI ID for Intel Braswell
spi: spi-au1550: fix build failure
spi: rspi: Fix leaking of unused DMA descriptors
spi: sh-msiof: Fix leaking of unused DMA descriptors
spi: Add missing kerneldoc bits
spi/omap-mcspi: Fix the spi task hangs waiting dma_rx
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These are all arguments or fields that got added without updating the
kerneldoc comments.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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Merge patches from Andrew Morton:
"22 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
kexec: purgatory: add clean-up for purgatory directory
Documentation/kdump/kdump.txt: add ARM description
flush_icache_range: export symbol to fix build errors
tools: selftests: fix build issue with make kselftests target
ocfs2: quorum: add a log for node not fenced
ocfs2: o2net: set tcp user timeout to max value
ocfs2: o2net: don't shutdown connection when idle timeout
ocfs2: do not write error flag to user structure we cannot copy from/to
x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified
xattr: fix check for simultaneous glibc header inclusion
kexec: remove CONFIG_KEXEC dependency on crypto
kexec: create a new config option CONFIG_KEXEC_FILE for new syscall
x86,mm: fix pte_special versus pte_numa
hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked
mm/zpool: use prefixed module loading
zram: fix incorrect stat with failed_reads
lib: turn CONFIG_STACKTRACE into an actual option.
mm: actually clear pmd_numa before invalidating
memblock, memhotplug: fix wrong type in memblock_find_in_range_node().
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The guard was introduced in commit ea1a8217b06b ("xattr: guard against
simultaneous glibc header inclusion") but it is using #ifdef to check
for a define that is either set to 1 or 0. Fix it to use #if instead.
* Without this patch:
$ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc -E -Iinclude/uapi - >/dev/null
include/uapi/linux/xattr.h:19:0: warning: "XATTR_CREATE" redefined [enabled by default]
#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
^
/usr/include/x86_64-linux-gnu/sys/xattr.h:32:0: note: this is the location of the previous definition
#define XATTR_CREATE XATTR_CREATE
^
* With this patch:
$ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc -E -Iinclude/uapi - >/dev/null
(no warnings)
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Cc: Allan McRae <allan@archlinux.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a bunch of fixes for the USB drivers for 3.17-rc3.
Also in here is the movement of the usbip driver out of staging, into
the "real" part of the kernel, it had to wait until after -rc1 to
handle the merge issues involved between the USB and staging trees.
The code is identical, just file movements there.
The USB fixes are all over the place, new device ids, xhci fixes for
reported issues and the usual gadget driver fixes as well. All have
been in linux-next for a while now"
* tag 'usb-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
USB: fix build error with CONFIG_PM_RUNTIME disabled
Revert "usb: ehci/ohci-exynos: Fix PHY getting sequence"
xhci: Disable streams on Via XHCI with device-id 0x3432
USB: serial: fix potential heap buffer overflow
USB: serial: fix potential stack buffer overflow
usb: ehci/ohci-exynos: Fix PHY getting sequence
usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
USB: sisusb: add device id for Magic Control USB video
usb: dwc2: gadget: Set the default EP max packet value as 8 bytes
usb: ehci: using wIndex + 1 for hub port
USB: storage: add quirk for Newer Technology uSCSI SCSI-USB converter
MAINTAINERS: Add an entry for USB/IP driver
usbip: remove struct usb_device_id table
usbip: move usbip kernel code out of staging
usbip: move usbip userspace code out of staging
USB: whiteheat: Added bounds checking for bulk command response
usb: gadget: remove $(PWD) in ccflags-y
usb: pch_udc: usb gadget device support for Intel Quark X1000
usb: gadget: uvc: fix possible lockup in uvc gadget
usb: wusbcore: fix below build warning
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At this point, USB/IP kernel code is fully functional
and can be moved out of staging.
Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 bugfixes from Ted Ts'o:
"Ext4 bug fixes for 3.17, to provide better handling of memory
allocation failures, and to fix some journaling bugs involving
journal checksums and FALLOC_FL_ZERO_RANGE"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix same-dir rename when inline data directory overflows
jbd2: fix descriptor block size handling errors with journal_csum
jbd2: fix infinite loop when recovering corrupt journal blocks
ext4: update i_disksize coherently with block allocation on error path
ext4: fix transaction issues for ext4_fallocate and ext_zero_range
ext4: fix incorect journal credits reservation in ext4_zero_range
ext4: move i_size,i_disksize update routines to helper function
ext4: fix BUG_ON in mb_free_blocks()
ext4: propagate errors up to ext4_find_entry()'s callers
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It turns out that there are some serious problems with the on-disk
format of journal checksum v2. The foremost is that the function to
calculate descriptor tag size returns sizes that are too big. This
causes alignment issues on some architectures and is compounded by the
fact that some parts of jbd2 use the structure size (incorrectly) to
determine the presence of a 64bit journal instead of checking the
feature flags.
Therefore, introduce journal checksum v3, which enlarges the
descriptor block tag format to allow for full 32-bit checksums of
journal blocks, fix the journal tag function to return the correct
sizes, and fix the jbd2 recovery code to use feature flags to
determine 64bitness.
Add a few function helpers so we don't have to open-code quite so
many pieces.
Switching to a 16-byte block size was found to increase journal size
overhead by a maximum of 0.1%, to convert a 32-bit journal with no
checksumming to a 32-bit journal with checksum v3 enabled.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: TR Reardon <thomas_reardon@hotmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
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Pull block layer fixes from Jens Axboe:
"A smaller collection of fixes that have come up since the initial
merge window pull request. This contains:
- error handling cleanup and support for larger than 16 byte cdbs in
sg_io() from Christoph. The latter just matches what bsg and
friends support, sg_io() got left out in the merge.
- an option for brd to expose partitions in /proc/partitions. They
are hidden by default for compat reasons. From Dmitry Monakhov.
- a few blk-mq fixes from me - killing a dead/unused flag, fix for
merging happening even if turned off, and correction of a few
comments.
- removal of unnecessary ->owner setting in systemace. From Michal
Simek.
- two related fixes for a problem with nesting freezing of queues in
blk-mq. One from Ming Lei removing an unecessary freeze operation,
and another from Tejun fixing the nesting regression introduced in
the merge window.
- fix for a BUG_ON() at bio_endio time when protection info is
attached and the IO has an error. From Sagi Grimberg.
- two scsi_ioctl bug fixes for regressions with scsi-mq from Tony
Battersby.
- a cfq weight update fix and subsequent comment update from Toshiaki
Makita"
* 'for-linus' of git://git.kernel.dk/linux-block:
cfq-iosched: Add comments on update timing of weight
cfq-iosched: Fix wrong children_weight calculation
block: fix error handling in sg_io
fix regression in SCSI_IOCTL_SEND_COMMAND
scsi-mq: fix requests that use a separate CDB buffer
block: support > 16 byte CDBs for SG_IO
block: cleanup error handling in sg_io
brd: add ram disk visibility option
block: systemace: Remove .owner field for driver
blk-mq: blk_mq_freeze_queue() should allow nesting
blk-mq: correct a few wrong/bad comments
block: Fix BUG_ON when pi errors occur
blk-mq: don't allow merges if turned off for the queue
blk-mq: get rid of unused BLK_MQ_F_SHOULD_SORT flag
blk-mq: fix WARNING "percpu_ref_kill() called more than once!"
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We used to use this for determining whether to sort the dispatch list,
but it's unused now.
Signed-off-by: Jens Axboe <axboe@fb.com>
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The seqno_fence_init() function's cond argument isn't described in the
kerneldoc comment. Fix that to silence a warning when building DocBook
documentation.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
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Pull NFS client fixes from Trond Myklebust:
"Highlights:
- more fixes for read/write codepath regressions
* sleeping while holding the inode lock
* stricter enforcement of page contiguity when coalescing requests
* fix up error handling in the page coalescing code
- don't busy wait on SIGKILL in the file locking code"
* tag 'nfs-for-3.17-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: Don't busy-wait on SIGKILL in __nfs_iocounter_wait
nfs: can_coalesce_requests must enforce contiguity
nfs: disallow duplicate pages in pgio page vectors
nfs: don't sleep with inode lock in lock_and_join_requests
nfs: fix error handling in lock_and_join_requests
nfs: use blocking page_group_lock in add_request
nfs: fix nonblocking calls to nfs_page_group_lock
nfs: change nfs_page_group_lock argument
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This handles the 'nonblock=false' case in nfs_lock_and_join_requests.
If the group is already locked and blocking is allowed, drop the inode lock
and wait for the group lock to be cleared before trying it all again.
This should fix warnings found in peterz's tree (sched/wait branch), where
might_sleep() checks are added to wait.[ch].
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Reviewed-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull fix for ftrace function tracer/profiler conflict from Steven Rostedt:
"The rewrite of the ftrace code that makes it possible to allow for
separate trampolines had a design flaw with the interaction between
the function and function_graph tracers.
The main flaw was the simplification of the use of multiple tracers
having the same filter (like function and function_graph, that use the
set_ftrace_filter file to filter their code). The design assumed that
the two tracers could never run simultaneously as only one tracer can
be used at a time. The problem with this assumption was that the
function profiler could be implemented on top of the function graph
tracer, and the function profiler could run at the same time as the
function tracer. This caused the assumption to be broken and when
ftrace detected this failed assumpiton it would spit out a nasty
warning and shut itself down.
Instead of using a single ftrace_ops that switches between the
function and function_graph callbacks, the two tracers can again use
their own ftrace_ops. But instead of having a complex hierarchy of
ftrace_ops, the filter fields are placed in its own structure and the
ftrace_ops can carefully use the same filter. This change took a bit
to be able to allow for this and currently only the global_ops can
share the same filter, but this new design can easily be modified to
allow for any ftrace_ops to share its filter with another ftrace_ops.
The first four patches deal with the change of allowing the ftrace_ops
to share the filter (and this needs to go to 3.16 as well).
The fifth patch fixes a bug that was also caused by the new changes
but only for archs other than x86, and only if those archs implement a
direct call to the function_graph tracer which they do not do yet but
will in the future. It does not need to go to stable, but needs to be
fixed before the other archs update their code to allow direct calls
to the function_graph trampoline"
* tag 'trace-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Use current addr when converting to nop in __ftrace_replace_code()
ftrace: Fix function_profiler and function tracer together
ftrace: Fix up trampoline accounting with looping on hash ops
ftrace: Update all ftrace_ops for a ftrace_hash_ops update
ftrace: Allow ftrace_ops to use the hashes from other ops
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Currently the top level debug file system function tracer shares its
ftrace_ops with the function graph tracer. This was thought to be fine
because the tracers are not used together, as one can only enable
function or function_graph tracer in the current_tracer file.
But that assumption proved to be incorrect. The function profiler
can use the function graph tracer when function tracing is enabled.
Since all function graph users uses the function tracing ftrace_ops
this causes a conflict and when a user enables both function profiling
as well as the function tracer it will crash ftrace and disable it.
The quick solution so far is to move them as separate ftrace_ops like
it was earlier. The problem though is to synchronize the functions that
are traced because both function and function_graph tracer are limited
by the selections made in the set_ftrace_filter and set_ftrace_notrace
files.
To handle this, a new structure is made called ftrace_ops_hash. This
structure will now hold the filter_hash and notrace_hash, and the
ftrace_ops will point to this structure. That will allow two ftrace_ops
to share the same hashes.
Since most ftrace_ops do not share the hashes, and to keep allocation
simple, the ftrace_ops structure will include both a pointer to the
ftrace_ops_hash called func_hash, as well as the structure itself,
called local_hash. When the ops are registered, the func_hash pointer
will be initialized to point to the local_hash within the ftrace_ops
structure. Some of the ftrace internal ftrace_ops will be initialized
statically. This will allow for the function and function_graph tracer
to have separate ops but still share the same hash tables that determine
what functions they trace.
Cc: stable@vger.kernel.org # 3.16 (apply after 3.17-rc4 is out)
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull gpio fixes from Linus Walleij:
- a largeish fix for the IRQ handling in the new Zynq driver. The
quite verbose commit message gives the exact details.
- move some defines for gpiod flags outside an ifdef to make stub
functions work again.
- various minor fixes that we can accept for -rc1.
* tag 'gpio-v3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio-lynxpoint: enable input sensing in resume
gpio: move GPIOD flags outside #ifdef
gpio: delete unneeded test before of_node_put
gpio: zynq: Fix IRQ handlers
gpiolib: devres: use correct structure type name in sizeof
MAINTAINERS: Change maintainer for gpio-bcm-kona.c
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The GPIOD flags are defined inside the #ifdef CONFIG_GPIOLIB
switch, making the gpiolib stubs fail if these flags are used
by a consumer. This is not correct: the stubs should compile
fine without GPIOLIB.
Reported-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Pull drm fixes from Dave Airlie:
"Intel and radeon fixes.
Post KS/LC git requests from i915 and radeon stacked up. They are all
fixes along with some new pci ids for radeon, and one maintainers file
entry.
- i915: display fixes and irq fixes
- radeon: pci ids, and misc gpuvm, dpm and hdp cache"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (29 commits)
MAINTAINERS: Add entry for Renesas DRM drivers
drm/radeon: add additional SI pci ids
drm/radeon: add new bonaire pci ids
drm/radeon: add new KV pci id
Revert "drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe"
drm/radeon: fix active_cu mask on SI and CIK after re-init (v3)
drm/radeon: fix active cu count for SI and CIK
drm/radeon: re-enable selective GPUVM flushing
drm/radeon: Sync ME and PFP after CP semaphore waits v4
drm/radeon: fix display handling in radeon_gpu_reset
drm/radeon: fix pm handling in radeon_gpu_reset
drm/radeon: Only flush HDP cache for indirect buffers from userspace
drm/radeon: properly document reloc priority mask
drm/i915: don't try to retrain a DP link on an inactive CRTC
drm/i915: make sure VDD is turned off during system suspend
drm/i915: cancel hotplug and dig_port work during suspend and unload
drm/i915: fix HPD IRQ reenable work cancelation
drm/i915: take display port power domain in DP HPD handler
drm/i915: Don't try to enable cursor from setplane when crtc is disabled
drm/i915: Skip load detect when intel_crtc->new_enable==true
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Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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bug:
https://bugs.freedesktop.org/show_bug.cgi?id=82912
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Instead of hard coding the value properly document
that this is an userspace interface.
No intended functional change.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Pull networking fixes from David Miller:
"Here are some bug fixes that have piled up during ksummit/linuxcon.
1) Fix endian problems in ibmveth, from Anton Blanchard.
2) IPV6 routing code does GFP_KERNEL allocation in atomic, fix from
Benjamin Block.
3) SCTP association fixes from Daniel Borkmann.
4) When multiple VLAN headers are present we have to make sure the
second and subsequent ones are pullable in the SKB otherwise we
blindly dereference garbage. From Jiri Benc.
5) The argument adjustment of the signature of hlist_add_after*()
introduced a regression in the batman-adv code, fix from Sven
Eckelmann.
6) Fix TX hang handling to avoid a panic in i40e, from Anjali Singhai
Jain.
7) PTP flag test is inverted in i40e driver, from Jesse Brandeburg.
8) ATM LEC driver needs to hold RTNL mutex over MTU changes, from
Chas Williams.
9) Truncate packets larger then the TPACKET_V3 format configured
buffers, otherwise we overwrite past the end of said buffers.
From Eric Dumazet.
10) Fix endianness bugs in qlcnic firmware handling, from Rajesh
Borundia and Shahed Shaikh.
11) CXGB4 sometimes doesn't get all of the TX completion events it
should resulting in SKBs getting stuck in the TX queue, from
Hariprasad Shenai.
12) When the FEC chip's PTP clock is disabled, you can't access the
register. Add necessary checks to avoid the resulting hang, from
Fugang Duan"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (37 commits)
drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef
net: sctp: fix suboptimal edge-case on non-active active/retrans path selection
net: sctp: spare unnecessary comparison in sctp_trans_elect_best
net: ethernet: broadcom: bnx2x: Remove redundant #ifdef
ibmveth: Fix endian issues with rx_no_buffer statistic
net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()
openvswitch: fix panic with multiple vlan headers
net: ipv6: fib: don't sleep inside atomic lock
net: fec: ptp: avoid register access when ipg clock is disabled
cxgb4: Free completed tx skbs promptly
cxgb4: Fix race condition in cleanup
sctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe
bnx2x: Revert UNDI flushing mechanism
qlcnic: Fix endianess issue in firmware load from file operation
qlcnic: Fix endianess issue in FW dump template header
qlcnic: Fix flash access interface to application
MAINTAINERS: Add section for MRF24J40 IEEE 802.15.4 radio driver
macvlan: Allow setting multicast filter on all macvlan types
packet: handle too big packets for PACKET_V3
MAINTAINERS: add entry for ec_bhf driver
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A wildcard entry with the 32-bits OUI 0x600d8400 was added as part of
the BCM7xxx internal PHY driver, but that entry might match other PHYs
that are not covered by this driver, so let's just remove it.
Fixes: b560a58c45c6 ("net: phy: add Broadcom BCM7xxx internal PHY driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@greenl8ke.davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"This small set of fixes addresses a few issues introduced during the
merge window, including:
- fix typo in I-cache detection that was causing us to treat all
I-caches as aliasing
- hook up memfd_create and getrandom syscalls for native and compat
- revert a temporary hack for defconfig builds in -next (the audit
tree changes didn't make it in this merge window)
- a couple of UEFI fixes for TEXT_OFFSET fuzzing and /memreserve/
- a simple sparsemem fix for 48-bit physical addressing
- small defconfig updates to get autotesters working with X-gene"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
arm64: mm: update max pa bits to 48
arm64: ignore DT memreserve entries when booting in UEFI mode
arm64: configs: Enable X-Gene SATA and ethernet in defconfig
arm64: align randomized TEXT_OFFSET on 4 kB boundary
asm-generic: add memfd_create system call to unistd.h
arm64: compat: wire up memfd_create and getrandom syscalls for aarch32
arm64: fix typo in I-cache policy detection
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