adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-29 12:16:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

sched: fix rt ptracer monopolizing CPU

Browse source 
yield() in wait_task_inactive(), can cause a high priority thread to be
scheduled back in, and there by loop forever while it is waiting for some
lower priority thread which is unfortunately still on the runqueue.

Use schedule_timeout_uninterruptible(1) instead.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Credit: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Gautham R Shenoy 2007-10-15 17:00:14 +02:00 committed by Ingo Molnar
parent 5cb350baf5
commit 638e13ac37
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
kernel/sched.c
View file

@ -1133,7 +1133,7 @@ repeat:
* yield - it could be a while.
*/
if (unlikely(on_rq)) {
yield();
schedule_timeout_uninterruptible(1);
goto repeat;
}