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arm: Remove unused cpu_idle_wait()

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cpuidle uses a generic function now. Remove the unused code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Link: http://lkml.kernel.org/r/20120507175652.260797846@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-05-07 17:59:49 +00:00
parent 85f7f65627
commit 448eca9093
3 changed files with 0 additions and 25 deletions
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3
arch/arm/Kconfig
View file

@ -160,9 +160,6 @@ config ARCH_HAS_CPUFREQ
and that the relevant menu configurations are displayed for and that the relevant menu configurations are displayed for
it. it.
config ARCH_HAS_CPU_IDLE_WAIT
def_bool y
config GENERIC_HWEIGHT config GENERIC_HWEIGHT
bool bool
default y default y

2
arch/arm/include/asm/processor.h
View file

@ -88,8 +88,6 @@ unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier() #define cpu_relax() barrier()
#endif #endif
void cpu_idle_wait(void);
/* /*
* Create a new kernel thread * Create a new kernel thread
*/ */

20
arch/arm/kernel/process.c
View file

@ -157,26 +157,6 @@ EXPORT_SYMBOL(pm_power_off);
void (*arm_pm_restart)(char str, const char *cmd) = null_restart; void (*arm_pm_restart)(char str, const char *cmd) = null_restart;
EXPORT_SYMBOL_GPL(arm_pm_restart); EXPORT_SYMBOL_GPL(arm_pm_restart);
static void do_nothing(void *unused)
{
}
/*
* cpu_idle_wait - Used to ensure that all the CPUs discard old value of
* pm_idle and update to new pm_idle value. Required while changing pm_idle
* handler on SMP systems.
*
* Caller must have changed pm_idle to the new value before the call. Old
* pm_idle value will not be used by any CPU after the return of this function.
*/
void cpu_idle_wait(void)
{
smp_mb();
/* kick all the CPUs so that they exit out of pm_idle */
smp_call_function(do_nothing, NULL, 1);
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);
/* /*
* This is our default idle handler. * This is our default idle handler.
*/ */