diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-02-10 10:23:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 15:37:29 -0800 |
| commit | 134f7feec8110044202aa6776f3b700022fe0213 (patch) | |
| tree | fb249769b631631e5dcb1de27f8e5c2f15c29935 /kernel/fork.c | |
| parent | aa68c0327e866f8c8cdbcea0afa69fcb89ad61a7 (diff) | |
sched: Fix cross-sched-class wakeup preemption
Commit: 1e5a74059f9059d330744eac84873b1b99657008 upstream
Instead of dealing with sched classes inside each check_preempt_curr()
implementation, pull out this logic into the generic wakeup preemption
path.
This fixes a hang in KVM (and others) where we are waiting for the
stop machine thread to run ...
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Marcelo Tosatti <mtosatti@redhat.com>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1288891946.2039.31.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel/fork.c')
0 files changed, 0 insertions, 0 deletions