linux-kernel - [PATCH V5 01/13] perf: Export perf_assign

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Message-Id: <1339479468-3815-2-git-send-email-zheng.z.yan@intel.com>
Date:	Tue, 12 Jun 2012 13:37:36 +0800
From:	"Yan, Zheng" <zheng.z.yan@...el.com>
To:	a.p.zijlstra@...llo.nl, mingo@...e.hu, jolsa@...hat.com,
	eranian@...gle.com, andi@...stfloor.org,
	linux-kernel@...r.kernel.org
Cc:	"Yan, Zheng" <zheng.z.yan@...el.com>
Subject: [PATCH V5 01/13] perf: Export perf_assign_events

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

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

Signed-off-by: Zheng Yan <zheng.z.yan@...el.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 9000590..0c9041c 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 & ((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))
@@ -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 3df3de9..83238f2 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);
-- 
1.7.10.2

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