diff mbox series

[v2,13/13] cpuidle: Use local_clock_noinstr()

Message ID 20230519102716.045980863@infradead.org
State New
Headers
Series local_clock() vs noinstr |

Commit Message

Peter Zijlstra May 19, 2023, 10:21 a.m. UTC 
  With the introduction of local_clock_noinstr(), local_clock() itself
is no longer marked noinstr, use the correct function.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 drivers/cpuidle/cpuidle.c    |    8 ++++----
 drivers/cpuidle/poll_state.c |    4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

Comments

Rafael J. Wysocki May 19, 2023, 2:13 p.m. UTC | #1 
On Fri, May 19, 2023 at 12:33 PM Peter Zijlstra <peterz@infradead.org> wrote:
>
> With the introduction of local_clock_noinstr(), local_clock() itself
> is no longer marked noinstr, use the correct function.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Acked-by: Rafael J. Wysocki <rafael@kernel.org>

> ---
>  drivers/cpuidle/cpuidle.c    |    8 ++++----
>  drivers/cpuidle/poll_state.c |    4 ++--
>  2 files changed, 6 insertions(+), 6 deletions(-)
>
> --- a/drivers/cpuidle/cpuidle.c
> +++ b/drivers/cpuidle/cpuidle.c
> @@ -145,7 +145,7 @@ static noinstr void enter_s2idle_proper(
>
>         instrumentation_begin();
>
> -       time_start = ns_to_ktime(local_clock());
> +       time_start = ns_to_ktime(local_clock_noinstr());
>
>         tick_freeze();
>         /*
> @@ -169,7 +169,7 @@ static noinstr void enter_s2idle_proper(
>         tick_unfreeze();
>         start_critical_timings();
>
> -       time_end = ns_to_ktime(local_clock());
> +       time_end = ns_to_ktime(local_clock_noinstr());
>
>         dev->states_usage[index].s2idle_time += ktime_us_delta(time_end, time_start);
>         dev->states_usage[index].s2idle_usage++;
> @@ -243,7 +243,7 @@ noinstr int cpuidle_enter_state(struct c
>         sched_idle_set_state(target_state);
>
>         trace_cpu_idle(index, dev->cpu);
> -       time_start = ns_to_ktime(local_clock());
> +       time_start = ns_to_ktime(local_clock_noinstr());
>
>         stop_critical_timings();
>         if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE)) {
> @@ -276,7 +276,7 @@ noinstr int cpuidle_enter_state(struct c
>         start_critical_timings();
>
>         sched_clock_idle_wakeup_event();
> -       time_end = ns_to_ktime(local_clock());
> +       time_end = ns_to_ktime(local_clock_noinstr());
>         trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu);
>
>         /* The cpu is no longer idle or about to enter idle. */
> --- a/drivers/cpuidle/poll_state.c
> +++ b/drivers/cpuidle/poll_state.c
> @@ -15,7 +15,7 @@ static int __cpuidle poll_idle(struct cp
>  {
>         u64 time_start;
>
> -       time_start = local_clock();
> +       time_start = local_clock_noinstr();
>
>         dev->poll_time_limit = false;
>
> @@ -32,7 +32,7 @@ static int __cpuidle poll_idle(struct cp
>                                 continue;
>
>                         loop_count = 0;
> -                       if (local_clock() - time_start > limit) {
> +                       if (local_clock_noinstr() - time_start > limit) {
>                                 dev->poll_time_limit = true;
>                                 break;
>                         }
>
>
diff mbox series

Patch

--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -145,7 +145,7 @@  static noinstr void enter_s2idle_proper(
 
 	instrumentation_begin();
 
-	time_start = ns_to_ktime(local_clock());
+	time_start = ns_to_ktime(local_clock_noinstr());
 
 	tick_freeze();
 	/*
@@ -169,7 +169,7 @@  static noinstr void enter_s2idle_proper(
 	tick_unfreeze();
 	start_critical_timings();
 
-	time_end = ns_to_ktime(local_clock());
+	time_end = ns_to_ktime(local_clock_noinstr());
 
 	dev->states_usage[index].s2idle_time += ktime_us_delta(time_end, time_start);
 	dev->states_usage[index].s2idle_usage++;
@@ -243,7 +243,7 @@  noinstr int cpuidle_enter_state(struct c
 	sched_idle_set_state(target_state);
 
 	trace_cpu_idle(index, dev->cpu);
-	time_start = ns_to_ktime(local_clock());
+	time_start = ns_to_ktime(local_clock_noinstr());
 
 	stop_critical_timings();
 	if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE)) {
@@ -276,7 +276,7 @@  noinstr int cpuidle_enter_state(struct c
 	start_critical_timings();
 
 	sched_clock_idle_wakeup_event();
-	time_end = ns_to_ktime(local_clock());
+	time_end = ns_to_ktime(local_clock_noinstr());
 	trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu);
 
 	/* The cpu is no longer idle or about to enter idle. */
--- a/drivers/cpuidle/poll_state.c
+++ b/drivers/cpuidle/poll_state.c
@@ -15,7 +15,7 @@  static int __cpuidle poll_idle(struct cp
 {
 	u64 time_start;
 
-	time_start = local_clock();
+	time_start = local_clock_noinstr();
 
 	dev->poll_time_limit = false;
 
@@ -32,7 +32,7 @@  static int __cpuidle poll_idle(struct cp
 				continue;
 
 			loop_count = 0;
-			if (local_clock() - time_start > limit) {
+			if (local_clock_noinstr() - time_start > limit) {
 				dev->poll_time_limit = true;
 				break;
 			}