[lkml]   [2013]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH v2 09/10] 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

Signed-off-by: Colin Cross <>
kernel/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 598dc06..10a70a0 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2845,7 +2845,7 @@ int do_sigtimedwait(const sigset_t *which, siginfo_t *info,

- timeout = schedule_timeout_interruptible(timeout);
+ timeout = freezable_schedule_timeout_interruptible(timeout);

__set_task_blocked(tsk, &tsk->real_blocked);

 \ /
  Last update: 2013-05-02 03:41    [W:0.085 / U:3.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site