From: Arnd Bergmann Date: Mon, 23 Feb 2009 21:44:37 +0000 (+0000) Subject: powerpc/spufs: Initialize ctx->stats.tstamp correctly X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8f748aae4b5eda6a6ec3ab3554e7e19c7702ccc2;p=linux-2.6-omap-h63xx.git 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 --- diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c index 6653ddbed04..db5398c0339 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;