perf: Export perf_assign_events()

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>

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 d1f38c9509d0..6d32aefc9dbd 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -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;
 
diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h
index 3df3de9452a9..83238f2a12b2 100644
--- a/arch/x86/kernel/cpu/perf_event.h
+++ b/arch/x86/kernel/cpu/perf_event.h
@@ -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);