Commit 34318c25 authored by Andre Detsch's avatar Andre Detsch Committed by Jeremy Kerr
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powerpc/spufs: Explain conditional decrement of aff_sched_count

This patch adds a comment to clarify why atomic_dec_if_positive is being used
to decrement gang's aff_sched_count on SPU context unbind.
Signed-off-by: default avatarAndre Detsch <>
Signed-off-by: default avatarJeremy Kerr <>
parent 10baa26c
......@@ -444,6 +444,11 @@ static void spu_unbind_context(struct spu *spu, struct spu_context *ctx)
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
spu_switch_notify(spu, NULL);
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