linux-kernel - [PATCH 08/11] sched/cleanup: remove the extra parm of sched_clock_idle_wakeup

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Date:	Thu, 22 Aug 2013 15:57:56 +0800
From:	Michael wang <wangyun@...ux.vnet.ibm.com>
To:	open list <linux-kernel@...r.kernel.org>
CC:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
	linux-acpi@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Len Brown <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	John Stultz <john.stultz@...aro.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Feng Tang <feng.tang@...el.com>
Subject: [PATCH 08/11] sched/cleanup: remove the extra parm of sched_clock_idle_wakeup_event()

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

CC: Thomas Gleixner <tglx@...utronix.de>
CC: "H. Peter Anvin" <hpa@...or.com>
CC: Len Brown <lenb@...nel.org>
CC: "Rafael J. Wysocki" <rjw@...k.pl>
CC: John Stultz <john.stultz@...aro.org>
CC: Paul Gortmaker <paul.gortmaker@...driver.com>
CC: Feng Tang <feng.tang@...el.com>
CC: Ingo Molnar <mingo@...hat.com>
CC: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Michael Wang <wangyun@...ux.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

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