diff options
| author | Luke Browning <lukebr@linux.vnet.ibm.com> | 2007-12-20 16:39:59 +0900 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-21 19:46:20 +1100 |
| commit | b192541b39ed29ff82f9f2d5427f451e89617f1c (patch) | |
| tree | d96c3a4a957da334955ed96bcd2902b06268c6cd | |
| parent | 91569531d1297db42d68136ac0c85cd85223d0b9 (diff) | |
[POWERPC] spufs: spu_find_victim may choose wrong victim
Need to re-check priority after dropping lock. Otherwise, a
more favored context may be preempted.
Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/sched.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index ef0e5e230fb..54b338f8363 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -626,10 +626,10 @@ static struct spu *find_victim(struct spu_context *ctx) } spu = victim->spu; - if (!spu) { + if (!spu || victim->prio <= ctx->prio) { /* * This race can happen because we've dropped - * the active list mutex. No a problem, just + * the active list mutex. Not a problem, just * restart the search. */ mutex_unlock(&victim->state_mutex); |