From 8f748aae4b5eda6a6ec3ab3554e7e19c7702ccc2 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 23 Feb 2009 21:44:37 +0000 Subject: [PATCH] powerpc/spufs: Initialize ctx->stats.tstamp correctly spuctx_switch_state() warns if ktime goes backwards, but it sometimes compares an uninitialized value, which showed that the data was unreliable when we actually saw the warning. Initialize it to the current time in order to get correct data. Signed-off-by: Arnd Bergmann Signed-off-by: Jeremy Kerr Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/cell/spufs/context.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c index 6653ddbed048..db5398c0339f 100644 --- a/arch/powerpc/platforms/cell/spufs/context.c +++ b/arch/powerpc/platforms/cell/spufs/context.c @@ -35,6 +35,8 @@ atomic_t nr_spu_contexts = ATOMIC_INIT(0); struct spu_context *alloc_spu_context(struct spu_gang *gang) { struct spu_context *ctx; + struct timespec ts; + ctx = kzalloc(sizeof *ctx, GFP_KERNEL); if (!ctx) goto out; @@ -64,6 +66,8 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang) __spu_update_sched_info(ctx); spu_set_timeslice(ctx); ctx->stats.util_state = SPU_UTIL_IDLE_LOADED; + ktime_get_ts(&ts); + ctx->stats.tstamp = timespec_to_ns(&ts); atomic_inc(&nr_spu_contexts); goto out; -- 2.11.0