AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

[POWERPC] spufs: don't requeue victim contex in find_victim if it's not in spu_run

Browse Source 
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>
This commit is contained in:
Christoph Hellwig 2008-05-08 15:26:32 +10:00 committed by Jeremy Kerr
parent 826be063ee
commit 7a28a1549f
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/platforms/cell/spufs/sched.c
View File

@ -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);