summaryrefslogtreecommitdiff
path: root/include/linux/perf_event.h
diff options
context:
space:
mode:
authorMatt Fleming <matt@console-pimps.org>2010-09-27 20:22:24 +0100
committerRobert Richter <robert.richter@amd.com>2010-10-11 10:38:13 +0200
commit3bf101ba42a1c89b5afbc7492e7647dae5e18735 (patch)
tree2501d57e827b283da1a0240630fe5988d155f07b /include/linux/perf_event.h
parent4cbe75be5c6ae86bdc7daec864eeb2dfd66f48bb (diff)
perf: Add helper function to return number of counters
The number of counters for the registered pmu is needed in a few places so provide a helper function that returns this number. Signed-off-by: Matt Fleming <matt@console-pimps.org> Tested-by: Will Deacon <will.deacon@arm.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'include/linux/perf_event.h')
-rw-r--r--include/linux/perf_event.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 716f99b682c1..1a0219247183 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -849,6 +849,7 @@ extern int perf_max_events;
extern const struct pmu *hw_perf_event_init(struct perf_event *event);
+extern int perf_num_counters(void);
extern 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);