diff options
| author | Linus Torvalds | 2016-01-11 18:53:13 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2016-01-11 18:53:13 -0800 |
| commit | 0f8c7901039f8b1366ae364462743c8f4125822e (patch) | |
| tree | 27cbd63383fdbce3ceca1ff2d248b3add78aa1ef /lib | |
| parent | 3d116a66ed9df0271b8d267093b3bfde2be19b3a (diff) | |
| parent | 6201171e3b2c02992e62448636631a0dfe4e9d20 (diff) | |
Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue update from Tejun Heo:
"Workqueue changes for v4.5. One cleanup patch and three to improve
the debuggability.
Workqueue now has a stall detector which dumps workqueue state if any
worker pool hasn't made forward progress over a certain amount of time
(30s by default) and also triggers a warning if a workqueue which can
be used in memory reclaim path tries to wait on something which can't
be.
These should make workqueue hangs a lot easier to debug."
* 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: simplify the apply_workqueue_attrs_locked()
workqueue: implement lockup detector
watchdog: introduce touch_softlockup_watchdog_sched()
workqueue: warn if memory reclaim tries to flush !WQ_MEM_RECLAIM workqueue
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 8c15b29d5adc..3048bf5b729a 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -812,6 +812,17 @@ config BOOTPARAM_HUNG_TASK_PANIC_VALUE default 0 if !BOOTPARAM_HUNG_TASK_PANIC default 1 if BOOTPARAM_HUNG_TASK_PANIC +config WQ_WATCHDOG + bool "Detect Workqueue Stalls" + depends on DEBUG_KERNEL + help + Say Y here to enable stall detection on workqueues. If a + worker pool doesn't make forward progress on a pending work + item for over a given amount of time, 30s by default, a + warning message is printed along with dump of workqueue + state. This can be configured through kernel parameter + "workqueue.watchdog_thresh" and its sysfs counterpart. + endmenu # "Debug lockups and hangs" config PANIC_ON_OOPS |