[POWERPC] spufs: decouple spu scheduler from spufs_spu_run (asynchronous scheduling)

Change spufs_spu_run so that the context is queued directly to the
scheduler and the controlling thread advances directly to spufs_wait()
for spe errors and exceptions.

nosched contexts are treated the same as before.

Fixes from Christoph Hellwig <hch@lst.de>

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 31 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index 6fa24d38706..290b10e4510 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -134,37 +134,6 @@ void spu_unmap_mappings(struct spu_context *ctx)
 }
 
 /**
- * spu_acquire_runnable - lock spu contex and make sure it is in runnable state
- * @ctx:	spu contex to lock
- *
- * Note:
- *	Returns 0 and with the context locked on success
- *	Returns negative error and with the context _unlocked_ on failure.
- */
-int spu_acquire_runnable(struct spu_context *ctx, unsigned long flags)
-{
-	int ret = -EINVAL;
-
-	spu_acquire(ctx);
-	if (ctx->state == SPU_STATE_SAVED) {
-		/*
-		 * Context is about to be freed, so we can't acquire it anymore.
-		 */
-		if (!ctx->owner)
-			goto out_unlock;
-		ret = spu_activate(ctx, flags);
-		if (ret)
-			goto out_unlock;
-	}
-
-	return 0;
-
- out_unlock:
-	spu_release(ctx);
-	return ret;
-}
-
-/**
  * spu_acquire_saved - lock spu contex and make sure it is in saved state
  * @ctx:	spu contex to lock
  */