diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2016-09-08 19:48:15 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-09-30 11:53:44 +0300 |
| commit | b1ea06a90f528e516929a4da1d9b8838752bceb9 (patch) | |
| tree | ca58fca505c7411b393047842c0eaedfe7c4ead0 /include/linux/wait.h | |
| parent | 38a3e1fc1dac480f3672ab22fc97e1f995c80ed7 (diff) | |
| download | linux-b1ea06a90f528e516929a4da1d9b8838752bceb9.tar.xz | |
sched/wait: Avoid abort_exclusive_wait() in ___wait_event()
___wait_event() doesn't really need abort_exclusive_wait(), we can simply
change prepare_to_wait_event() to remove the waiter from q->task_list if
it was interrupted.
This simplifies the code/logic, and this way prepare_to_wait_event() can
have more users, see the next change.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Neil Brown <neilb@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160908164815.GA18801@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
--
include/linux/wait.h | 7 +------
kernel/sched/wait.c | 35 +++++++++++++++++++++++++----------
2 files changed, 26 insertions(+), 16 deletions(-)
Diffstat (limited to 'include/linux/wait.h')
| -rw-r--r-- | include/linux/wait.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/include/linux/wait.h b/include/linux/wait.h index e4cfd1ed726e..7261dcbe5afe 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -280,12 +280,7 @@ wait_queue_head_t *bit_waitqueue(void *, int); \ if (___wait_is_interruptible(state) && __int) { \ __ret = __int; \ - if (exclusive) { \ - abort_exclusive_wait(&wq, &__wait, \ - NULL); \ - goto __out; \ - } \ - break; \ + goto __out; \ } \ \ cmd; \ |