diff options
| author | Colin Cross <ccross@android.com> | 2013-05-06 23:50:20 +0000 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-08-30 19:33:24 -0700 |
| commit | 6b99ac04d9ec393a25f64af8b28cfa4bf3f2176b (patch) | |
| tree | 488c5cf30264252346531545d1d494ce5abef661 /kernel/signal.c | |
| parent | 1d2c64c1cd0cbd9de27a8b40183d4360105a1395 (diff) | |
UPSTREAM next (v3.11): sigtimedwait: use freezable blocking call
Avoid waking up every thread sleeping in a sigtimedwait call during
suspend and resume by calling a freezable blocking call. Previous
patches modified the freezer to avoid sending wakeups to threads
that are blocked in freezable blocking calls.
This call was selected to be converted to a freezable call because
it doesn't hold any locks or release any resources when interrupted
that might be needed by another freezing task or a kernel driver
during suspend, and is a common site where idle userspace tasks are
blocked.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit a2d5f1f5d941593e61071dc78e9de228eda5475f)
Change-Id: I854b1ea03eb338198a7d0cbdaaf4abfc4f0e936d
Reviewed-on: http://git-master/r/228700
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 113411bfe8b1..50e41075ac77 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2848,7 +2848,7 @@ int do_sigtimedwait(const sigset_t *which, siginfo_t *info, recalc_sigpending(); spin_unlock_irq(&tsk->sighand->siglock); - timeout = schedule_timeout_interruptible(timeout); + timeout = freezable_schedule_timeout_interruptible(timeout); spin_lock_irq(&tsk->sighand->siglock); __set_task_blocked(tsk, &tsk->real_blocked); |