[Cbe-oss-dev] [PATCH] spufs: turn run_sema into run_mutex
Christoph Hellwig
hch at lst.de
Mon Apr 16 05:32:21 EST 2007
There is no reason for run_sema to be a struct semaphore. Chaing
it to a mutex and rename it accordingly.
Signed-off-by: Christoph Hellwig <hch at lst.de>
Index: linux-2.6/arch/powerpc/platforms/cell/spufs/context.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/cell/spufs/context.c 2007-04-15 19:49:46.000000000 +0200
+++ linux-2.6/arch/powerpc/platforms/cell/spufs/context.c 2007-04-15 19:49:49.000000000 +0200
@@ -43,7 +43,7 @@ struct spu_context *alloc_spu_context(st
spin_lock_init(&ctx->mapping_lock);
kref_init(&ctx->kref);
mutex_init(&ctx->state_mutex);
- init_MUTEX(&ctx->run_sema);
+ mutex_init(&ctx->run_mutex);
init_waitqueue_head(&ctx->ibox_wq);
init_waitqueue_head(&ctx->wbox_wq);
init_waitqueue_head(&ctx->stop_wq);
Index: linux-2.6/arch/powerpc/platforms/cell/spufs/run.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/cell/spufs/run.c 2007-04-15 19:49:41.000000000 +0200
+++ linux-2.6/arch/powerpc/platforms/cell/spufs/run.c 2007-04-15 19:49:49.000000000 +0200
@@ -293,7 +293,7 @@ long spufs_run_spu(struct file *file, st
struct spu * spu;
u32 status;
- if (down_interruptible(&ctx->run_sema))
+ if (mutex_lock_interruptible(&ctx->run_mutex))
return -ERESTARTSYS;
ctx->ops->master_start(ctx);
@@ -377,6 +377,6 @@ out2:
out:
*event = ctx->event_return;
- up(&ctx->run_sema);
+ mutex_unlock(&ctx->run_mutex);
return ret;
}
Index: linux-2.6/arch/powerpc/platforms/cell/spufs/spufs.h
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/cell/spufs/spufs.h 2007-04-15 19:49:46.000000000 +0200
+++ linux-2.6/arch/powerpc/platforms/cell/spufs/spufs.h 2007-04-15 19:49:49.000000000 +0200
@@ -61,7 +61,7 @@ struct spu_context {
enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
struct mutex state_mutex;
- struct semaphore run_sema;
+ struct mutex run_mutex;
struct mm_struct *owner;
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