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Commit 84c79910 authored by Matt Fleming's avatar Matt Fleming Committed by Robert Richter
Browse files

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: default avatarMatt Fleming <matt@console-pimps.org>
Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: default avatarPaul Mundt <lethal@linux-sh.org>
Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent 3bf101ba

arch/sh/kernel/perf_event.c

+9 −0
Original line number Diff line number Diff line
@@ -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)

include/linux/perf_event.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

kernel/perf_event.c

+5 −0
Original line number Diff line number Diff line
@@ -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)