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x86: Use this_cpu_ops to optimize code

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Go through x86 code and replace __get_cpu_var and get_cpu_var
instances that refer to a scalar and are not used for address
determinations.

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2010-12-18 16:28:55 +01:00
parent 7c83912062
commit 0a3aee0da4
16 changed files with 57 additions and 62 deletions
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4
arch/x86/kernel/cpu/perf_event_intel.c
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@ -649,7 +649,7 @@ static void intel_pmu_enable_event(struct perf_event *event)
struct hw_perf_event *hwc = &event->hw;
if (unlikely(hwc->idx == X86_PMC_IDX_FIXED_BTS)) {
if (!__get_cpu_var(cpu_hw_events).enabled)
if (!__this_cpu_read(cpu_hw_events.enabled))
return;
intel_pmu_enable_bts(hwc->config);
@ -679,7 +679,7 @@ static int intel_pmu_save_and_restart(struct perf_event *event)
static void intel_pmu_reset(void)
{
struct debug_store *ds = __get_cpu_var(cpu_hw_events).ds;
struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
unsigned long flags;
int idx;