[PATCH 1/9] perf: Export perf_assign_events

Yan, Zheng
2012-05-02T02:07:33Z

From: "Yan, Zheng" <zheng.z.yan@intel.com>

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

Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
---
arch/x86/kernel/cpu/perf_event.c | 6 +++---
arch/x86/kernel/cpu/perf_event.h | 2 ++
2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index e33e9cf..eec3d09 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -637,7 +637,7 @@ 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 & ((u64)-1 << 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))
@@ -704,8 +704,8 @@ 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;

diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
index 6638aaf..e6dfc00 100644
--- a/arch/x86/kernel/cpu/perf_event.h
+++ b/arch/x86/kernel/cpu/perf_event.h
@@ -466,6 +466,8 @@ 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);
--
1.7.7.6