powerpc: cell: Use ktime_get_ns()

Replace the ever recurring:
	ts = ktime_get_ts();
	ns = timespec_to_ns(&ts);
with
	ns = ktime_get_ns();
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>

arch/powerpc/platforms/cell/spu_base.c

@@ -611,7 +611,6 @@ static int __init create_spu(void *data)
 	int ret;
 	static int number;
 	unsigned long flags;
-	struct timespec ts;
 
 	ret = -ENOMEM;
 	spu = kzalloc(sizeof (*spu), GFP_KERNEL);
@@ -652,8 +651,7 @@ static int __init create_spu(void *data)
 	mutex_unlock(&spu_full_list_mutex);
 
 	spu->stats.util_state = SPU_UTIL_IDLE_LOADED;
-	ktime_get_ts(&ts);
-	spu->stats.tstamp = timespec_to_ns(&ts);
+	spu->stats.tstamp = ktime_get_ns();
 
 	INIT_LIST_HEAD(&spu->aff_list);
 
@@ -676,7 +674,6 @@ static const char *spu_state_names[] = {
 static unsigned long long spu_acct_time(struct spu *spu,
 		enum spu_utilization_state state)
 {
-	struct timespec ts;
 	unsigned long long time = spu->stats.times[state];
 
 	/*
@@ -684,10 +681,8 @@ static unsigned long long spu_acct_time(struct spu *spu,
 	 * statistics are not updated.  Apply the time delta from the
 	 * last recorded state of the spu.
 	 */
-	if (spu->stats.util_state == state) {
-		ktime_get_ts(&ts);
-		time += timespec_to_ns(&ts) - spu->stats.tstamp;
-	}
+	if (spu->stats.util_state == state)
+		time += ktime_get_ns() - spu->stats.tstamp;
 
 	return time / NSEC_PER_MSEC;
 }

arch/powerpc/platforms/cell/spufs/context.c

@@ -36,7 +36,6 @@ 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)
@@ -67,8 +66,7 @@ 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);
+	ctx->stats.tstamp = ktime_get_ns();
 
 	atomic_inc(&nr_spu_contexts);
 	goto out;

arch/powerpc/platforms/cell/spufs/file.c

@@ -2338,7 +2338,6 @@ static const char *ctx_state_names[] = {
 static unsigned long long spufs_acct_time(struct spu_context *ctx,
 		enum spu_utilization_state state)
 {
-	struct timespec ts;
 	unsigned long long time = ctx->stats.times[state];
 
 	/*
@@ -2351,8 +2350,7 @@ static unsigned long long spufs_acct_time(struct spu_context *ctx,
 	 * of the spu context.
 	 */
 	if (ctx->spu && ctx->stats.util_state == state) {
-		ktime_get_ts(&ts);
-		time += timespec_to_ns(&ts) - ctx->stats.tstamp;
+		time += ktime_get_ns() - ctx->stats.tstamp;
 	}
 
 	return time / NSEC_PER_MSEC;

arch/powerpc/platforms/cell/spufs/sched.c

@@ -1039,13 +1039,11 @@ void spuctx_switch_state(struct spu_context *ctx,
 {
 	unsigned long long curtime;
 	signed long long delta;
-	struct timespec ts;
 	struct spu *spu;
 	enum spu_utilization_state old_state;
 	int node;
 
-	ktime_get_ts(&ts);
-	curtime = timespec_to_ns(&ts);
+	curtime = ktime_get_ns();
 	delta = curtime - ctx->stats.tstamp;
 
 	WARN_ON(!mutex_is_locked(&ctx->state_mutex));