linux-kernel - [PATCH v2 25/27] perf tests: Support 'Convert perf time to TSC' test for hybrid

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Message-Id: <20210311070742.9318-26-yao.jin@linux.intel.com>
Date:   Thu, 11 Mar 2021 15:07:40 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v2 25/27] 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,

root@...pl-adl-s-2:~# ./perf test 71
71: Convert perf time to TSC                                        : Ok

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
 tools/perf/tests/perf-time-to-tsc.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
index 680c3cffb128..b472205ec8e3 100644
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ b/tools/perf/tests/perf-time-to-tsc.c
@@ -66,6 +66,11 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe
 	u64 test_tsc, comm1_tsc, comm2_tsc;
 	u64 test_time, comm1_time = 0, comm2_time = 0;
 	struct mmap *md;
+	bool hybrid = false;
+
+	perf_pmu__scan(NULL);
+	if (perf_pmu__hybrid_exist())
+		hybrid = true;
 
 	threads = thread_map__new(-1, getpid(), UINT_MAX);
 	CHECK_NOT_NULL__(threads);
@@ -88,6 +93,17 @@ 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 (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));
-- 
2.17.1