[GIT PULL UPDATED] workqueue changes for v4.5-rc1

[Tejun Heo]

Hello, Linus.  I messed up the request-pull part of the previous
message.  Here's the correct one.

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.

Thanks.
 
The following changes since commit 527e9316f8ec44bd53d90fb9f611fa7ffff52bb9:

  Linux 4.4-rc4 (2015-12-06 15:43:12 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-4.5

for you to fetch changes up to 6201171e3b2c02992e62448636631a0dfe4e9d20:

  workqueue: simplify the apply_workqueue_attrs_locked() (2016-01-07 11:04:34 -0500)

----------------------------------------------------------------
Tejun Heo (3):
      workqueue: warn if memory reclaim tries to flush !WQ_MEM_RECLAIM workqueue
      watchdog: introduce touch_softlockup_watchdog_sched()
      workqueue: implement lockup detector

wanghaibin (1):
      workqueue: simplify the apply_workqueue_attrs_locked()

 Documentation/kernel-parameters.txt |   9 ++
 include/linux/sched.h               |   4 +
 include/linux/workqueue.h           |   6 +
 kernel/sched/clock.c                |   2 +-
 kernel/time/tick-sched.c            |   6 +-
 kernel/watchdog.c                   |  18 ++-
 kernel/workqueue.c                  | 220 ++++++++++++++++++++++++++++++++++--
 lib/Kconfig.debug                   |  11 ++
 8 files changed, 261 insertions(+), 15 deletions(-)

-- 
tejun