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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-07 17:59:49 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-08 12:35:06 +0200 |
| commit | 85f7f656274fa0ba109dd8774db3887d42de5c6b (patch) | |
| tree | d5ec3ed47c86a00ee198d988afc059ebb4d38c42 /arch | |
| parent | 4a1625133d4faaefcec0dc175941f49b186918d9 (diff) | |
| download | linux-85f7f656274fa0ba109dd8774db3887d42de5c6b.tar.gz linux-85f7f656274fa0ba109dd8774db3887d42de5c6b.tar.bz2 linux-85f7f656274fa0ba109dd8774db3887d42de5c6b.zip | |
x86: Use kick_all_cpus_sync()
Use kick_all_cpus_sync() and remove cpu_idle_wait().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120507175652.190382227@linutronix.de
Cc: x86@kernel.org
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 3 | ||||
| -rw-r--r-- | arch/x86/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/apm_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/process.c | 20 |
4 files changed, 1 insertions, 26 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 046bf4bd2510..98876f55a2e0 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -161,9 +161,6 @@ config RWSEM_GENERIC_SPINLOCK config RWSEM_XCHGADD_ALGORITHM def_bool X86_XADD -config ARCH_HAS_CPU_IDLE_WAIT - def_bool y - config GENERIC_CALIBRATE_DELAY def_bool y diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 4fa7dcceb6c0..ccbb1ea99ccb 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -974,8 +974,6 @@ extern bool cpu_has_amd_erratum(const int *); #define cpu_has_amd_erratum(x) (false) #endif /* CONFIG_CPU_SUP_AMD */ -void cpu_idle_wait(void); - extern unsigned long arch_align_stack(unsigned long sp); extern void free_init_pages(char *what, unsigned long begin, unsigned long end); diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c index 459e78cbf61e..07b0c0db466c 100644 --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -2401,7 +2401,7 @@ static void __exit apm_exit(void) * (pm_idle), Wait for all processors to update cached/local * copies of pm_idle before proceeding. */ - cpu_idle_wait(); + kick_all_cpus_sync(); } if (((apm_info.bios.flags & APM_BIOS_DISENGAGED) == 0) && (apm_info.connection_version > 0x0100)) { diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 8aa532fa015d..8215458f6af5 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -525,26 +525,6 @@ void stop_this_cpu(void *dummy) } } -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); - /* Default MONITOR/MWAIT with no hints, used for default C1 state */ static void mwait_idle(void) { |