diff mbox series

[1/3] tick/nohz: Rename the tick handlers to more self-explanatory names

Message ID 20230714120852.23573-2-frederic@kernel.org
State New
Headers
Series tick/nohz cleanups |

Commit Message

Frederic Weisbecker July 14, 2023, 12:08 p.m. UTC 
  The current name of the tick handlers don't tell much about what differ
between them. Use names that better reflect their role and resolution.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
---
 kernel/time/tick-sched.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Joel Fernandes July 14, 2023, 6:28 p.m. UTC | #1 
On 7/14/23 08:08, Frederic Weisbecker wrote:
> The current name of the tick handlers don't tell much about what differ
> between them. Use names that better reflect their role and resolution.
> 
> Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
> ---
>   kernel/time/tick-sched.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
> index 89055050d1ac..a7b5960258f2 100644
> --- a/kernel/time/tick-sched.c
> +++ b/kernel/time/tick-sched.c
> @@ -1355,7 +1355,7 @@ void tick_nohz_idle_exit(void)
>   /*
>    * The nohz low res interrupt handler
>    */
> -static void tick_nohz_handler(struct clock_event_device *dev)
> +static void tick_lowres_handler(struct clock_event_device *dev)

Maybe tick_nohz_lowres_handler() is better?

You also have tick_periodic which is also 'lowres'.

That would also keep the "tick_nohz" prefix which is prevalent in this code.

>   {
>   	struct tick_sched *ts = this_cpu_ptr(&tick_cpu_sched);
>   	struct pt_regs *regs = get_irq_regs();
> @@ -1401,7 +1401,7 @@ static void tick_nohz_switch_to_nohz(void)
>   	if (!tick_nohz_enabled)
>   		return;
>   
> -	if (tick_switch_to_oneshot(tick_nohz_handler))
> +	if (tick_switch_to_oneshot(tick_lowres_handler))
>   		return;
>   
>   	/*
> @@ -1464,7 +1464,7 @@ void tick_irq_enter(void)
>    * We rearm the timer until we get disabled by the idle code.
>    * Called with interrupts disabled.
>    */
> -static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer)
> +static enum hrtimer_restart tick_highres_handler(struct hrtimer *timer)

This one looks good.

thanks,

  - Joel


>   {
>   	struct tick_sched *ts =
>   		container_of(timer, struct tick_sched, sched_timer);
> @@ -1513,7 +1513,7 @@ void tick_setup_sched_timer(void)
>   	 * Emulate tick processing via per-CPU hrtimers:
>   	 */
>   	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
> -	ts->sched_timer.function = tick_sched_timer;
> +	ts->sched_timer.function = tick_highres_handler;
>   
>   	/* Get the next period (per-CPU) */
>   	hrtimer_set_expires(&ts->sched_timer, tick_init_jiffy_update());
diff mbox series

Patch

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 89055050d1ac..a7b5960258f2 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -1355,7 +1355,7 @@  void tick_nohz_idle_exit(void)
 /*
  * The nohz low res interrupt handler
  */
-static void tick_nohz_handler(struct clock_event_device *dev)
+static void tick_lowres_handler(struct clock_event_device *dev)
 {
 	struct tick_sched *ts = this_cpu_ptr(&tick_cpu_sched);
 	struct pt_regs *regs = get_irq_regs();
@@ -1401,7 +1401,7 @@  static void tick_nohz_switch_to_nohz(void)
 	if (!tick_nohz_enabled)
 		return;
 
-	if (tick_switch_to_oneshot(tick_nohz_handler))
+	if (tick_switch_to_oneshot(tick_lowres_handler))
 		return;
 
 	/*
@@ -1464,7 +1464,7 @@  void tick_irq_enter(void)
  * We rearm the timer until we get disabled by the idle code.
  * Called with interrupts disabled.
  */
-static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer)
+static enum hrtimer_restart tick_highres_handler(struct hrtimer *timer)
 {
 	struct tick_sched *ts =
 		container_of(timer, struct tick_sched, sched_timer);
@@ -1513,7 +1513,7 @@  void tick_setup_sched_timer(void)
 	 * Emulate tick processing via per-CPU hrtimers:
 	 */
 	hrtimer_init(&ts->sched_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_HARD);
-	ts->sched_timer.function = tick_sched_timer;
+	ts->sched_timer.function = tick_highres_handler;
 
 	/* Get the next period (per-CPU) */
 	hrtimer_set_expires(&ts->sched_timer, tick_init_jiffy_update());