[PATCH 08/11] sched/cleanup: remove the extra parm of sched_clock_idle_wakeup_event()

[PATCH 08/11] sched/cleanup: remove the extra parm of sched_clock_idle_wakeup_event()

[Michael wang]

Parm 'delta_ns' has not been used, remove it to make code clean.

CC: Thomas Gleixner <tglx@linutronix.de>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Len Brown <lenb@kernel.org>
CC: "Rafael J. Wysocki" <rjw@sisk.pl>
CC: John Stultz <john.stultz@linaro.org>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Feng Tang <feng.tang@intel.com>
CC: Ingo Molnar <mingo@redhat.com>
CC: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
---
 arch/x86/kernel/tsc.c         |    2 +-
 drivers/acpi/processor_idle.c |    4 ++--
 include/linux/sched.h         |    7 ++-----
 kernel/sched/clock.c          |    2 +-
 kernel/time/tick-sched.c      |    2 +-
 5 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 930e5d4..4a40402 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -635,7 +635,7 @@ static void set_cyc2ns_scale(unsigned long cpu_khz, int cpu)
 					     (1UL << CYC2NS_SCALE_FACTOR));
 	}
 
-	sched_clock_idle_wakeup_event(0);
+	sched_clock_idle_wakeup_event();
 	local_irq_restore(flags);
 }
 
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index f98dd00..2bb49f8 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -817,7 +817,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	sched_clock_idle_sleep_event();
 	acpi_idle_do_entry(cx);
 
-	sched_clock_idle_wakeup_event(0);
+	sched_clock_idle_wakeup_event();
 
 	if (cx->entry_method != ACPI_CSTATE_FFH)
 		current_thread_info()->status |= TS_POLLING;
@@ -913,7 +913,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 		raw_spin_unlock(&c3_lock);
 	}
 
-	sched_clock_idle_wakeup_event(0);
+	sched_clock_idle_wakeup_event();
 
 	if (cx->entry_method != ACPI_CSTATE_FFH)
 		current_thread_info()->status |= TS_POLLING;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 45a1a88..800c57f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1809,7 +1809,7 @@ static inline void sched_clock_idle_sleep_event(void)
 {
 }
 
-static inline void sched_clock_idle_wakeup_event(u64 delta_ns)
+static inline void sched_clock_idle_wakeup_event(void)
 {
 }
 #else
@@ -1823,7 +1823,7 @@ extern int sched_clock_stable;
 
 extern void sched_clock_tick(void);
 extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
+extern void sched_clock_idle_wakeup_event(void);
 #endif
 
 #ifdef CONFIG_IRQ_TIME_ACCOUNTING
@@ -1849,9 +1849,6 @@ extern void sched_exec(void);
 #define sched_exec()   {}
 #endif
 
-extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
-
 #ifdef CONFIG_HOTPLUG_CPU
 extern void idle_task_exit(void);
 #else
diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
index c3ae144..d111c58 100644
--- a/kernel/sched/clock.c
+++ b/kernel/sched/clock.c
@@ -294,7 +294,7 @@ EXPORT_SYMBOL_GPL(sched_clock_idle_sleep_event);
 /*
  * We just idled delta nanoseconds (called with irqs disabled):
  */
-void sched_clock_idle_wakeup_event(u64 delta_ns)
+void sched_clock_idle_wakeup_event(void)
 {
 	if (timekeeping_suspended)
 		return;
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 3612fc7..4b24d9e 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -433,7 +433,7 @@ static void tick_nohz_stop_idle(int cpu, ktime_t now)
 	update_ts_time_stats(cpu, ts, now, NULL);
 	ts->idle_active = 0;
 
-	sched_clock_idle_wakeup_event(0);
+	sched_clock_idle_wakeup_event();
 }
 
 static ktime_t tick_nohz_start_idle(int cpu, struct tick_sched *ts)
-- 
1.7.9.5

Re: [PATCH 08/11] sched/cleanup: remove the extra parm of sched_clock_idle_wakeup_event()

[Michael wang]

On 08/22/2013 03:57 PM, Michael wang wrote:
> Parm 'delta_ns' has not been used, remove it to make code clean.
[snip]
>  
> -extern void sched_clock_idle_sleep_event(void);
> -extern void sched_clock_idle_wakeup_event(u64 delta_ns);

Also remove the extra declaration here.

Regards,
Michael Wang

> -
>  #ifdef CONFIG_HOTPLUG_CPU
>  extern void idle_task_exit(void);
>  #else
> diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c
> index c3ae144..d111c58 100644
> --- a/kernel/sched/clock.c
> +++ b/kernel/sched/clock.c
> @@ -294,7 +294,7 @@ EXPORT_SYMBOL_GPL(sched_clock_idle_sleep_event);
>  /*
>   * We just idled delta nanoseconds (called with irqs disabled):
>   */
> -void sched_clock_idle_wakeup_event(u64 delta_ns)
> +void sched_clock_idle_wakeup_event(void)
>  {
>  	if (timekeeping_suspended)
>  		return;
> diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
> index 3612fc7..4b24d9e 100644
> --- a/kernel/time/tick-sched.c
> +++ b/kernel/time/tick-sched.c
> @@ -433,7 +433,7 @@ static void tick_nohz_stop_idle(int cpu, ktime_t now)
>  	update_ts_time_stats(cpu, ts, now, NULL);
>  	ts->idle_active = 0;
>  
> -	sched_clock_idle_wakeup_event(0);
> +	sched_clock_idle_wakeup_event();
>  }
>  
>  static ktime_t tick_nohz_start_idle(int cpu, struct tick_sched *ts)
>