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Subject[PATCH v4 3/3] perf test: Add test for #system_tsc_freq in metrics
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The value should be non-zero on Intel while zero on everything else.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/tests/expr.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/perf/tests/expr.c b/tools/perf/tests/expr.c
index 5c0032fe93ae..2efe9e3a63b8 100644
--- a/tools/perf/tests/expr.c
+++ b/tools/perf/tests/expr.c
@@ -1,8 +1,10 @@
// SPDX-License-Identifier: GPL-2.0
#include "util/debug.h"
#include "util/expr.h"
+#include "util/header.h"
#include "util/smt.h"
#include "tests.h"
+#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <linux/zalloc.h>
@@ -69,6 +71,11 @@ static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_u
double val, num_cpus, num_cores, num_dies, num_packages;
int ret;
struct expr_parse_ctx *ctx;
+ bool is_intel = false;
+ char buf[128];
+
+ if (!get_cpuid(buf, sizeof(buf)))
+ is_intel = strstr(buf, "Intel") != NULL;

TEST_ASSERT_EQUAL("ids_union", test_ids_union(), 0);

@@ -175,6 +182,12 @@ static int test__expr(struct test_suite *t __maybe_unused, int subtest __maybe_u
if (num_dies) // Some platforms do not have CPU die support, for example s390
TEST_ASSERT_VAL("#num_dies >= #num_packages", num_dies >= num_packages);

+ TEST_ASSERT_VAL("#system_tsc_freq", expr__parse(&val, ctx, "#system_tsc_freq") == 0);
+ if (is_intel)
+ TEST_ASSERT_VAL("#system_tsc_freq > 0", val > 0);
+ else
+ TEST_ASSERT_VAL("#system_tsc_freq == 0", fpclassify(val) == FP_ZERO);
+
/*
* Source count returns the number of events aggregating in a leader
* event including the leader. Check parsing yields an id.
--
2.37.0.170.g444d1eabd0-goog
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