imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-10-31 06:14:39 +01:00
Code Issues Packages Projects Releases Wiki Activity

sched: Make sched_class::get_rr_interval() optional

Browse Source 
Not all classes implement (or can implement) a useful get_rr_interval()
function, default to a 0 time-slice for them.

This fixes a crash reported by Tommi Rantala.

Reported-by: Tommi Rantala <[email protected]>
Cc: Dave Jones <[email protected]>
Cc: Tommi Rantala <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra authored and Ingo Molnar committed 2014-01-28 13:08:41 +01:00
1 parent 712e5e34ae
commit a57beec5d4
1 file changed
+3 -1
Download Patch File Download Diff File Expand all files Collapse all files
kernel/sched/core.c
+3 -1
View File
@@ -4324,7 +4324,9 @@ SYSCALL_DEFINE2(sched_rr_get_interval, pid_t, pid,
goto out_unlock;
rq = task_rq_lock(p, &flags);
time_slice = p->sched_class->get_rr_interval(rq, p);
time_slice = 0;
if (p->sched_class->get_rr_interval)
time_slice = p->sched_class->get_rr_interval(rq, p);
task_rq_unlock(rq, p, &flags);
rcu_read_unlock();