diff options
| author | Len Brown <len.brown@intel.com> | 2011-03-30 23:52:29 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-08-03 19:06:36 -0400 |
| commit | 4bfc8288bc4a64529c5547d17349a2a1f4675507 (patch) | |
| tree | b7c89fc03fe4cfad612e15554b2095426415b177 /arch/x86/kernel/process.c | |
| parent | d91ee5863b71e8c90eaf6035bff3078a85e2e7b5 (diff) | |
x86 idle: move mwait_idle_with_hints() to where it is used
...and make it static
no functional change
cc: x86@kernel.org
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86/kernel/process.c')
| -rw-r--r-- | arch/x86/kernel/process.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index e1ba8cb24e4..e7e3b019c43 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -438,29 +438,6 @@ void cpu_idle_wait(void) } EXPORT_SYMBOL_GPL(cpu_idle_wait); -/* - * This uses new MONITOR/MWAIT instructions on P4 processors with PNI, - * which can obviate IPI to trigger checking of need_resched. - * We execute MONITOR against need_resched and enter optimized wait state - * through MWAIT. Whenever someone changes need_resched, we would be woken - * up from MWAIT (without an IPI). - * - * New with Core Duo processors, MWAIT can take some hints based on CPU - * capability. - */ -void mwait_idle_with_hints(unsigned long ax, unsigned long cx) -{ - if (!need_resched()) { - if (this_cpu_has(X86_FEATURE_CLFLUSH_MONITOR)) - clflush((void *)¤t_thread_info()->flags); - - __monitor((void *)¤t_thread_info()->flags, 0, 0); - smp_mb(); - if (!need_resched()) - __mwait(ax, cx); - } -} - /* Default MONITOR/MWAIT with no hints, used for default C1 state */ static void mwait_idle(void) { |