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ia64: Remove unused cpu_idle_wait() 

IA64 does not set CONFIG_ARCH_HAVE_IDLE_WAIT and 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: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20120507175652.392394511@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-05-07 17:59:50 +00:00
parent 448eca9093
commit bbe78cbd72
2 changed files with 0 additions and 21 deletions
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1
arch/ia64/include/asm/processor.h
View File

@ -723,7 +723,6 @@ extern unsigned long boot_option_idle_override;
enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT, enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
IDLE_NOMWAIT, IDLE_POLL}; IDLE_NOMWAIT, IDLE_POLL};
void cpu_idle_wait(void);
void default_idle(void); void default_idle(void);
#define ia64_platform_is(x) (strcmp(x, platform_name) == 0) #define ia64_platform_is(x) (strcmp(x, platform_name) == 0)

20
arch/ia64/kernel/process.c
View File

@ -273,26 +273,6 @@ static inline void play_dead(void)
} }
#endif /* CONFIG_HOTPLUG_CPU */ #endif /* CONFIG_HOTPLUG_CPU */
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);
void __attribute__((noreturn)) void __attribute__((noreturn))
cpu_idle (void) cpu_idle (void)
{ {