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authorChristoph Hellwig <hch@lst.de>2008-05-08 15:26:32 +1000
committerJeremy Kerr <jk@ozlabs.org>2008-05-08 15:26:32 +1000
commit7a28a1549f9514f3b0dd3dde5c7337ba5d44fba3 (patch)
tree7a1e56a8ba110a7d1525f35d6ea6b4e7d761999e
parent826be063eee9b4c2703fd86cfc9723bc391ff1cb (diff)
[POWERPC] spufs: don't requeue victim contex in find_victim if it's not in spu_run
We should not requeue the victim context in find_victim if the owner is not in spu_run. It's first not needed because leaving the context on the spu is an optimization and second is harmful because it means the owner could re-enter spu_run when the context is on the runqueue and trip the BUG_ON in __spu_update_sched_info. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 1df7d6d152c..8a05ac863a2 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -659,7 +659,8 @@ static struct spu *find_victim(struct spu_context *ctx)
victim->stats.invol_ctx_switch++;
spu->stats.invol_ctx_switch++;
- spu_add_to_rq(victim);
+ if (test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags))
+ spu_add_to_rq(victim);
mutex_unlock(&victim->state_mutex);