[POWERPC] spusched: No preemption for nosched contexts

And last but not least we need to make sure the scheduler tick never
preempts a nosched context.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index a20e4e28858c..7bb5229b1e3c 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -522,7 +522,12 @@ void spu_yield(struct spu_context *ctx)
 
 static void spusched_tick(struct spu_context *ctx)
 {
-        if (ctx->policy == SCHED_FIFO || --ctx->time_slice)
+        if (ctx->flags & SPU_CREATE_NOSCHED)
+                return;
+        if (ctx->policy == SCHED_FIFO)
+                return;
+
+        if (--ctx->time_slice)
                 return;
 
         /*