Commit d9da6f70 authored by Jin Yao's avatar Jin Yao Committed by Arnaldo Carvalho de Melo
Browse files

perf tests: Support 'Convert perf time to TSC' test for hybrid 



Since for "cycles:u' on hybrid platform, it creates two "cycles".  So
the second evsel in evlist also needs initialization.

With this patch,

  # ./perf test 71
  71: Convert perf time to TSC                                        : Ok

Signed-off-by: default avatarJin Yao <yao.jin@linux.intel.com>
Reviewed-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210427070139.25256-25-yao.jin@linux.intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent c1020388

tools/perf/tests/perf-time-to-tsc.c

+12 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include "tsc.h"

#include "mmap.h"

#include "tests.h"

#include "pmu.h"



#define CHECK__(x) {				\

	while ((x) < 0) {			\
@@ -88,6 +89,17 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe 
	evsel->core.attr.disabled = 1;

	evsel->core.attr.enable_on_exec = 0;



	/*

	 * For hybrid "cycles:u", it creates two events.

	 * Init the second evsel here.

	 */

	if (perf_pmu__has_hybrid()) {

		evsel = evsel__next(evsel);

		evsel->core.attr.comm = 1;

		evsel->core.attr.disabled = 1;

		evsel->core.attr.enable_on_exec = 0;

	}



	CHECK__(evlist__open(evlist));



	CHECK__(evlist__mmap(evlist, UINT_MAX));