Merge git://git.infradead.org/mtd-2.6

[linux-2.6-omap-h63xx.git] / arch / powerpc / platforms / cell / spufs / sched.c

diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 6253df5a436e6edcc144064a362cd80a65f59cf0..2ad914c47493fbd870cc6eaf1acd70991f256440 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -444,6 +444,11 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
                atomic_dec(&cbe_spu_info[spu->node].reserved_spus);
 
        if (ctx->gang)
+               /*
+                * If ctx->gang->aff_sched_count is positive, SPU affinity is
+                * being considered in this gang. Using atomic_dec_if_positive
+                * allow us to skip an explicit check for affinity in this gang
+                */
                atomic_dec_if_positive(&ctx->gang->aff_sched_count);
 
        spu_switch_notify(spu, NULL);