Commit a8cbe40f authored by Andi Kleen's avatar Andi Kleen Committed by Arnaldo Carvalho de Melo
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perf evsel: Add iterator to iterate over events ordered by CPU 



Add some common code that is needed to iterate over all events
in CPU order. Used in followon patches

Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Link: http://lore.kernel.org/lkml/20191121001522.180827-6-andi@firstfloor.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a2408a70

tools/perf/util/cpumap.h

+1 −0
Original line number Diff line number Diff line
@@ -63,4 +63,5 @@ int cpu_map__build_map(struct perf_cpu_map *cpus, struct perf_cpu_map **res, 


int cpu_map__cpu(struct perf_cpu_map *cpus, int idx);

bool cpu_map__has(struct perf_cpu_map *cpus, int cpu);



#endif /* __PERF_CPUMAP_H */

tools/perf/util/evlist.c

+32 −0
Original line number Diff line number Diff line
@@ -342,6 +342,38 @@ static int perf_evlist__nr_threads(struct evlist *evlist, 
		return perf_thread_map__nr(evlist->core.threads);

}



void evlist__cpu_iter_start(struct evlist *evlist)

{

	struct evsel *pos;



	/*

	 * Reset the per evsel cpu_iter. This is needed because

	 * each evsel's cpumap may have a different index space,

	 * and some operations need the index to modify

	 * the FD xyarray (e.g. open, close)

	 */

	evlist__for_each_entry(evlist, pos)

		pos->cpu_iter = 0;

}



bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu)

{

	if (ev->cpu_iter >= ev->core.cpus->nr)

		return true;

	if (cpu >= 0 && ev->core.cpus->map[ev->cpu_iter] != cpu)

		return true;

	return false;

}



bool evsel__cpu_iter_skip(struct evsel *ev, int cpu)

{

	if (!evsel__cpu_iter_skip_no_inc(ev, cpu)) {

		ev->cpu_iter++;

		return false;

	}

	return true;

}



void evlist__disable(struct evlist *evlist)

{

	struct evsel *pos;

tools/perf/util/evlist.h

+8 −0
Original line number Diff line number Diff line
@@ -334,9 +334,17 @@ void perf_evlist__to_front(struct evlist *evlist, 
#define evlist__for_each_entry_safe(evlist, tmp, evsel) \

	__evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel)



#define evlist__for_each_cpu(evlist, index, cpu)	\

	evlist__cpu_iter_start(evlist);			\

	perf_cpu_map__for_each_cpu (cpu, index, (evlist)->core.all_cpus)



void perf_evlist__set_tracking_event(struct evlist *evlist,

				     struct evsel *tracking_evsel);



void evlist__cpu_iter_start(struct evlist *evlist);

bool evsel__cpu_iter_skip(struct evsel *ev, int cpu);

bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu);



struct evsel *

perf_evlist__find_evsel_by_str(struct evlist *evlist, const char *str);

tools/perf/util/evsel.h

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ struct evsel { 
	bool			collect_stat;

	bool			weak_group;

	bool			percore;

	int			cpu_iter;

	const char		*pmu_name;

	struct {

		perf_evsel__sb_cb_t	*cb;

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