GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-23 23:21:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

sched: remove extra call overhead for schedule()

Browse source 
Lai Jiangshan's patch reminded me that I promised Nick to remove
that extra call overhead in schedule().

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090313112300.927414207@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-03-13 12:21:26 +01:00 • committed by Ingo Molnar
parent 13318a7186
commit ff743345bf
2 changed files with 7 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

4
kernel/mutex.c
View file

@ -248,7 +248,9 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
/* didnt get the lock, go to sleep: */
spin_unlock_mutex(&lock->wait_lock, flags);
__schedule();
preempt_enable_no_resched();
schedule();
preempt_disable();
spin_lock_mutex(&lock->wait_lock, flags);
}