Commit-ID: 84c7991059c9c4530cc911137c5bf508a41ed129
Gitweb: http://git.kernel.org/tip/84c7991059c9c4530cc911137c5bf508a41ed129
Author: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
AuthorDate: Sun, 3 Oct 2010 21:41:13 +0100
Committer: Robert Richter <robert.richter@xxxxxxx>
CommitDate: Mon, 11 Oct 2010 17:45:49 +0200
perf: New helper function for pmu name
Introduce perf_pmu_name() helper function that returns the name of the
pmu. This gives us a generic way to get the name of a pmu regardless of
how an architecture identifies it internally.
Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Acked-by: Paul Mundt <lethal@xxxxxxxxxxxx>
Signed-off-by: Robert Richter <robert.richter@xxxxxxx>
---
arch/sh/kernel/perf_event.c | 9 +++++++++
include/linux/perf_event.h | 1 +
kernel/perf_event.c | 5 +++++
3 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
index 2cb9ad5..55fe89b 100644
--- a/arch/sh/kernel/perf_event.c
+++ b/arch/sh/kernel/perf_event.c
@@ -59,6 +59,15 @@ static inline int sh_pmu_initialized(void)
return !!sh_pmu;
}
+const char *perf_pmu_name(void)
+{
+ if (!sh_pmu)
+ return NULL;
+
+ return sh_pmu->name;
+}
+EXPORT_SYMBOL_GPL(perf_pmu_name);
+
int perf_num_counters(void)
{
if (!sh_pmu)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 1a02192..33f08da 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -850,6 +850,7 @@ extern int perf_max_events;
extern const struct pmu *hw_perf_event_init(struct perf_event *event);
extern int perf_num_counters(void);
+extern const char *perf_pmu_name(void);
extern void perf_event_task_sched_in(struct task_struct *task);
extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
extern void perf_event_task_tick(struct task_struct *task);
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 403d180..e253469 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -85,6 +85,11 @@ void __weak hw_perf_enable(void) { barrier(); }
void __weak perf_event_print_debug(void) { }
+extern __weak const char *perf_pmu_name(void)
+{
+ return "pmu";
+}
+
static DEFINE_PER_CPU(int, perf_disable_count);
void perf_disable(void)
--
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