---

yaml
---
r: 17227
b: refs/heads/master
c: 5ef8224
h: refs/heads/master
i:
  17225: 5fd84f4
  17223: 04360eb
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e80358ad8606382154d97165121602dfae213e4a
+refs/heads/master: 5ef8224aaa9220bfecb362f0802cf78aad47c02a

trunk/arch/powerpc/platforms/cell/spufs/context.c

@@ -43,6 +43,7 @@ struct spu_context *alloc_spu_context(struct address_space *local_store)
 	spin_lock_init(&ctx->mmio_lock);
 	kref_init(&ctx->kref);
 	init_rwsem(&ctx->state_sema);
+	init_MUTEX(&ctx->run_sema);
 	init_waitqueue_head(&ctx->ibox_wq);
 	init_waitqueue_head(&ctx->wbox_wq);
 	init_waitqueue_head(&ctx->stop_wq);

trunk/arch/powerpc/platforms/cell/spufs/file.c

@@ -620,18 +620,21 @@ long spufs_run_spu(struct file *file, struct spu_context *ctx,
 {
 	int ret;
 
-	if ((ret = spu_run_init(ctx, npc, status)) != 0)
-		return ret;
+	if (down_interruptible(&ctx->run_sema))
+		return -ERESTARTSYS;
+
+	ret = spu_run_init(ctx, npc, status);
+	if (ret)
+		goto out;
 
 	do {
 		ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, status));
 		if (unlikely(ret))
 			break;
 		if (unlikely(ctx->state != SPU_STATE_RUNNABLE)) {
 			ret = spu_reacquire_runnable(ctx, npc, status);
-			if (ret) {
-				return ret;
-			}
+			if (ret)
+				goto out;
 			continue;
 		}
 		ret = spu_process_events(ctx);
@@ -645,6 +648,8 @@ long spufs_run_spu(struct file *file, struct spu_context *ctx,
 		ret = *status;
 	spu_yield(ctx);
 
+out:
+	up(&ctx->run_sema);
 	return ret;
 }
 

trunk/arch/powerpc/platforms/cell/spufs/spufs.h

@@ -48,6 +48,7 @@ struct spu_context {
 
 	enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
 	struct rw_semaphore state_sema;
+	struct semaphore run_sema;
 
 	struct mm_struct *owner;