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perf: Export perf_assign_events()

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Export perf_assign_events() so the uncore code can use it to
schedule events.

Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1339741902-8449-2-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Yan, Zheng 2012-06-15 14:31:30 +08:00 committed by Ingo Molnar
parent d1ece0998e
commit 4b4969b144
2 changed files with 5 additions and 3 deletions
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6
arch/x86/kernel/cpu/perf_event.c
View File

@ -626,7 +626,7 @@ static bool __perf_sched_find_counter(struct perf_sched *sched)
c = sched->constraints[sched->state.event];
/* Prefer fixed purpose counters */
if (x86_pmu.num_counters_fixed) {
if (c->idxmsk64 & (~0ULL << X86_PMC_IDX_FIXED)) {
idx = X86_PMC_IDX_FIXED;
for_each_set_bit_from(idx, c->idxmsk, X86_PMC_IDX_MAX) {
if (!__test_and_set_bit(idx, sched->state.used))
@ -693,8 +693,8 @@ static bool perf_sched_next_event(struct perf_sched *sched)
/*
* Assign a counter for each event.
*/
static int perf_assign_events(struct event_constraint **constraints, int n,
int wmin, int wmax, int *assign)
int perf_assign_events(struct event_constraint **constraints, int n,
int wmin, int wmax, int *assign)
{
struct perf_sched sched;

2
arch/x86/kernel/cpu/perf_event.h
View File

@ -481,6 +481,8 @@ static inline void __x86_pmu_enable_event(struct hw_perf_event *hwc,
void x86_pmu_enable_all(int added);
int perf_assign_events(struct event_constraint **constraints, int n,
int wmin, int wmax, int *assign);
int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign);
void x86_pmu_stop(struct perf_event *event, int flags);