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x86: Remove dead hlt_use_halt code 

The hlt_use_halt function returns always true and there is only
one definition of it.

The default_idle function can then get ride of the if ...
statement and we can remove the else branch.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linaro-dev@lists.linaro.org
Cc: patches@linaro.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1351181591-8710-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Daniel Lezcano 2012-10-25 18:13:11 +02:00 committed by Ingo Molnar
parent 2ab3f29ddd
commit 4d0e42cc66
1 changed files with 14 additions and 25 deletions
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11
arch/x86/kernel/process.c
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@ -306,11 +306,6 @@ void (*pm_idle)(void);
EXPORT_SYMBOL(pm_idle); EXPORT_SYMBOL(pm_idle);
#endif #endif
static inline int hlt_use_halt(void)
{
return 1;
}
#ifndef CONFIG_SMP #ifndef CONFIG_SMP
static inline void play_dead(void) static inline void play_dead(void)
{ {
@ -410,7 +405,6 @@ void cpu_idle(void)
*/ */
void default_idle(void) void default_idle(void)
{ {
if (hlt_use_halt()) {
trace_power_start_rcuidle(POWER_CSTATE, 1, smp_processor_id()); trace_power_start_rcuidle(POWER_CSTATE, 1, smp_processor_id());
trace_cpu_idle_rcuidle(1, smp_processor_id()); trace_cpu_idle_rcuidle(1, smp_processor_id());
current_thread_info()->status &= ~TS_POLLING; current_thread_info()->status &= ~TS_POLLING;
@ -427,11 +421,6 @@ void default_idle(void)
current_thread_info()->status |= TS_POLLING; current_thread_info()->status |= TS_POLLING;
trace_power_end_rcuidle(smp_processor_id()); trace_power_end_rcuidle(smp_processor_id());
trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id()); trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id());
} else {
local_irq_enable();
/* loop is done by the caller */
cpu_relax();
}
} }
#ifdef CONFIG_APM_MODULE #ifdef CONFIG_APM_MODULE
EXPORT_SYMBOL(default_idle); EXPORT_SYMBOL(default_idle);