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powerpc: Remove unused cpu_idle_wait()

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cpuidle uses a generic function now. Remove the cruft.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Link: http://lkml.kernel.org/r/20120507175652.330322737@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-05-07 17:59:50 +00:00
parent bbe78cbd72
commit c9b92b8407
3 changed files with 0 additions and 24 deletions
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4
arch/powerpc/Kconfig
View File

@ -87,10 +87,6 @@ config ARCH_HAS_ILOG2_U64
bool
default y if 64BIT
config ARCH_HAS_CPU_IDLE_WAIT
bool
default y
config GENERIC_HWEIGHT
bool
default y

1
arch/powerpc/include/asm/processor.h
View File

@ -386,7 +386,6 @@ extern unsigned long cpuidle_disable;
enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
extern int powersave_nap; /* set if nap mode can be used in idle loop */
void cpu_idle_wait(void);
#ifdef CONFIG_PSERIES_IDLE
extern void update_smt_snooze_delay(int snooze);

19
arch/powerpc/kernel/idle.c
View File

@ -113,25 +113,6 @@ void cpu_idle(void)
}
}
static void do_nothing(void *unused)
{
}
/*
* cpu_idle_wait - Used to ensure that all the CPUs come out of the old
* idle loop and start using the new idle loop.
* Required while changing idle handler on SMP systems.
* Caller must have changed idle handler to the new value before the call.
* This window may be larger on shared systems.
*/
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);
int powersave_nap;
#ifdef CONFIG_SYSCTL