diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2015-12-01 16:04:04 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-12-04 12:10:15 +0300 |
| commit | 68985633bccb6066bf1803e316fbc6c1f5b796d6 (patch) | |
| tree | 0756c924eb126f00b1a6c45db30ac6c0893c1327 /Documentation | |
| parent | 89b411081d70fe3772efa4665279293269c1150d (diff) | |
sched/wait: Fix signal handling in bit wait helpers
Vladimir reported getting RCU stall warnings and bisected it back to
commit:
743162013d40 ("sched: Remove proliferation of wait_on_bit() action functions")
That commit inadvertently reversed the calls to schedule() and signal_pending(),
thereby not handling the case where the signal receives while we sleep.
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: mark.rutland@arm.com
Cc: neilb@suse.de
Cc: oleg@redhat.com
Fixes: 743162013d40 ("sched: Remove proliferation of wait_on_bit() action functions")
Fixes: cbbce8220949 ("SCHED: add some "wait..on_bit...timeout()" interfaces.")
Link: http://lkml.kernel.org/r/20151201130404.GL3816@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions