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sh: Remove cpu_idle_wait() 

cpuidle uses generic kick_all_cpus_sync() now. Remove the unused code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Link: http://lkml.kernel.org/r/20120507175652.461648208@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-05-07 17:59:51 +00:00
parent c9b92b8407
commit 86627c93b3
3 changed files with 0 additions and 24 deletions
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3
arch/sh/Kconfig
View File

@ -153,9 +153,6 @@ config ARCH_NO_VIRT_TO_BUS
config ARCH_HAS_DEFAULT_IDLE config ARCH_HAS_DEFAULT_IDLE
def_bool y def_bool y
config ARCH_HAS_CPU_IDLE_WAIT
def_bool y
config NO_IOPORT config NO_IOPORT
def_bool !PCI def_bool !PCI
depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN

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

@ -98,7 +98,6 @@ extern struct sh_cpuinfo cpu_data[];
#define cpu_relax() barrier() #define cpu_relax() barrier()
void default_idle(void); void default_idle(void);
void cpu_idle_wait(void);
void stop_this_cpu(void *); void stop_this_cpu(void *);
/* Forward decl */ /* Forward decl */

20
arch/sh/kernel/idle.c
View File

@ -132,10 +132,6 @@ void __init select_idle_routine(void)
pm_idle = poll_idle; pm_idle = poll_idle;
} }
static void do_nothing(void *unused)
{
}
void stop_this_cpu(void *unused) void stop_this_cpu(void *unused)
{ {
local_irq_disable(); local_irq_disable();
@ -144,19 +140,3 @@ void stop_this_cpu(void *unused)
for (;;) for (;;)
cpu_sleep(); cpu_sleep();
} }
/*
* 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);