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From: Adrian Hunter <adrian.hunter@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Jiri Olsa <jolsa@redhat.com>,
	linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org, kvm@vger.kernel.org,
	H Peter Anvin <hpa@zytor.com>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Leo Yan <leo.yan@linaro.org>
Subject: [PATCH 06/11] perf tools: Add new clock IDs to "perf time to TSC" test
Date: Wed,  9 Feb 2022 10:49:24 +0200	[thread overview]
Message-ID: <20220209084929.54331-7-adrian.hunter@intel.com> (raw)
In-Reply-To: <20220209084929.54331-1-adrian.hunter@intel.com>

The same "Convert perf time to TSC" test can be used with new clock IDs
CLOCK_PERF_HW_CLOCK and CLOCK_PERF_HW_CLOCK_NS.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/tests/perf-time-to-tsc.c | 41 ++++++++++++++++++++++-------
 1 file changed, 32 insertions(+), 9 deletions(-)

diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
index d12d0ad81801..1044bc4acacb 100644
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ b/tools/perf/tests/perf-time-to-tsc.c
@@ -22,6 +22,7 @@
 #include "tests.h"
 #include "pmu.h"
 #include "pmu-hybrid.h"
+#include "perf_api_probe.h"
 
 /*
  * Except x86_64/i386 and Arm64, other archs don't support TSC in perf.  Just
@@ -47,15 +48,7 @@
 	}					\
 }
 
-/**
- * test__perf_time_to_tsc - test converting perf time to TSC.
- *
- * This function implements a test that checks that the conversion of perf time
- * to and from TSC is consistent with the order of events.  If the test passes
- * %0 is returned, otherwise %-1 is returned.  If TSC conversion is not
- * supported then then the test passes but " (not supported)" is printed.
- */
-static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
+static int perf_time_to_tsc_test(bool use_clockid, s32 clockid)
 {
 	struct record_opts opts = {
 		.mmap_pages	     = UINT_MAX,
@@ -104,6 +97,8 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su
 	evsel->core.attr.comm = 1;
 	evsel->core.attr.disabled = 1;
 	evsel->core.attr.enable_on_exec = 0;
+	evsel->core.attr.use_clockid = use_clockid;
+	evsel->core.attr.clockid = clockid;
 
 	/*
 	 * For hybrid "cycles:u", it creates two events.
@@ -200,4 +195,32 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su
 	return err;
 }
 
+/**
+ * test__perf_time_to_tsc - test converting perf time to TSC.
+ *
+ * This function implements a test that checks that the conversion of perf time
+ * to and from TSC is consistent with the order of events.  If the test passes
+ * %0 is returned, otherwise %-1 is returned.  If TSC conversion is not
+ * supported then the test passes but " (not supported)" is printed.
+ */
+static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused,
+				  int subtest __maybe_unused)
+{
+	int err;
+
+	err = perf_time_to_tsc_test(false, 0);
+
+	if (!err && perf_can_perf_clock_hw_clock()) {
+		pr_debug("Testing CLOCK_PERF_HW_CLOCK\n");
+		err = perf_time_to_tsc_test(true, CLOCK_PERF_HW_CLOCK);
+	}
+
+	if (!err && perf_can_perf_clock_hw_clock_ns()) {
+		pr_debug("Testing CLOCK_PERF_HW_CLOCK_NS\n");
+		err = perf_time_to_tsc_test(true, CLOCK_PERF_HW_CLOCK_NS);
+	}
+
+	return err;
+}
+
 DEFINE_SUITE("Convert perf time to TSC", perf_time_to_tsc);
-- 
2.25.1


  parent reply	other threads:[~2022-02-09  8:52 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-09  8:49 [PATCH 00/11] perf intel-pt: Add perf event clocks to better support VM tracing Adrian Hunter
2022-02-09  8:49 ` [PATCH 01/11] perf/x86: Fix native_perf_sched_clock_from_tsc() with __sched_clock_offset Adrian Hunter
2022-02-09 12:54   ` Peter Zijlstra
2022-02-09 14:26     ` Adrian Hunter
2022-02-09  8:49 ` [PATCH 02/11] perf/x86: Add support for TSC as a perf event clock Adrian Hunter
2022-02-09 13:11   ` Peter Zijlstra
2022-02-09 13:39     ` Adrian Hunter
2022-02-09  8:49 ` [PATCH 03/11] perf/x86: Add support for TSC in nanoseconds " Adrian Hunter
2022-02-09 13:00   ` Peter Zijlstra
2022-02-09  8:49 ` [PATCH 04/11] perf tools: Add new perf clock IDs Adrian Hunter
2022-02-09  8:49 ` [PATCH 05/11] perf tools: Add API probes for new " Adrian Hunter
2022-02-09  8:49 ` Adrian Hunter [this message]
2022-02-09  8:49 ` [PATCH 07/11] perf tools: Add perf_read_tsc_conv_for_clockid() Adrian Hunter
2022-02-09  8:49 ` [PATCH 08/11] perf intel-pt: Add support for new clock IDs Adrian Hunter
2022-02-09  8:49 ` [PATCH 09/11] perf intel-pt: Use CLOCK_PERF_HW_CLOCK_NS by default Adrian Hunter
2022-02-09  8:49 ` [PATCH 10/11] perf intel-pt: Add config variables for timing parameters Adrian Hunter
2022-02-09  8:49 ` [PATCH 11/11] perf intel-pt: Add documentation for new clock IDs Adrian Hunter

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