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| author | Luke Browning <lukebrowning@us.ibm.com> | 2008-06-16 02:42:38 +0200 |
|---|---|---|
| committer | Jeremy Kerr <jk@ozlabs.org> | 2008-06-16 06:35:01 +0200 |
| commit | 028fda0a6c80c26f1d9f403b4490b9ddc74ffa3b (patch) | |
| tree | bb8c8977b4b4991919d8995c01f197fb4e5f00dd /arch | |
| parent | powerpc/spufs: synchronize interaction between spu exception handling and tim... (diff) | |
| download | linux-028fda0a6c80c26f1d9f403b4490b9ddc74ffa3b.tar.xz linux-028fda0a6c80c26f1d9f403b4490b9ddc74ffa3b.zip | |
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')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/sched.c | 5 |
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 cd725670b1b5..e929e70a84e3 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); } /** |