[POWERPC] spusched: Update scheduling paramters on every spu_run

Update scheduling information on every spu_run to allow for setting
threads to realtime priority just before running them.  This requires
some slightly ugly code in spufs_run_spu because we can just update
the information unlocked if the spu is not runnable, but we need to
acquire the active_mutex when it is runnable to protect against
find_victim.  This locking scheme requires opencoding
spu_acquire_runnable in spufs_run_spu which actually is a nice cleanup
all by itself.

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, 0 insertions, 11 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index c5ec7cfc24b..c778d9178e0 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -54,17 +54,6 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
         if (gang)
                 spu_gang_add_ctx(gang, ctx);
 
-        /*
-         * We do our own priority calculations, so we normally want
-         * ->static_prio to start with. Unfortunately thies field
-         * contains junk for threads with a realtime scheduling
-         * policy so we have to look at ->prio in this case.
-         */
-        if (rt_prio(current->prio))
-                ctx->prio = current->prio;
-        else
-                ctx->prio = current->static_prio;
-        ctx->policy = current->policy;
         spu_set_timeslice(ctx);
         goto out;
 out_free: