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authorLuke Browning <lukebrowning@us.ibm.com>2008-06-16 10:42:38 +1000
committerJeremy Kerr <jk@ozlabs.org>2008-06-16 14:35:01 +1000
commit028fda0a6c80c26f1d9f403b4490b9ddc74ffa3b (patch)
treebb8c8977b4b4991919d8995c01f197fb4e5f00dd /arch/powerpc/platforms/cell/spufs/sched.c
parent2c911a14b74fa9cf815a936f310e4fa85bee77ce (diff)
downloadlinaro-lsk-028fda0a6c80c26f1d9f403b4490b9ddc74ffa3b.tar.gz
powerpc/spufs: fix missed stop-and-signal event
There is a delay in the transition to the stopped state for class 2 interrupts. In some cases, the controlling thread detects the state of the spu as running, and goes back to sleep resulting in a hung application as the event is missed. This change detects the stop condition and re-generates the wakeup event after a context save. Signed-off-by: Luke Browning <lukebrowning@us.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/sched.c')
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index cd725670b1b..e929e70a84e 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -407,6 +407,8 @@ static int has_affinity(struct spu_context *ctx)
*/
static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
{
+ u32 status;
+
spu_context_trace(spu_unbind_context__enter, ctx, spu);
spuctx_switch_state(ctx, SPU_UTIL_SYSTEM);
@@ -452,6 +454,9 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
/* This maps the underlying spu state to idle */
spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED);
ctx->spu = NULL;
+
+ if (spu_stopped(ctx, &status))
+ wake_up_all(&ctx->stop_wq);
}
/**