perf tests tsc: Add checking helper is_supported()

So far tsc is enabled on x86_64, i386 and Arm64 architectures, add
checking helper to skip this testing for other architectures.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20201019100236.23675-3-leo.yan@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/builtin-test.c

@@ -352,6 +352,7 @@ static struct test generic_tests[] = {
 	{
 		.desc = "Convert perf time to TSC",
 		.func = test__perf_time_to_tsc,
+		.is_supported = test__tsc_is_supported,
 	},
 	{
 		.func = NULL,

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

@@ -169,3 +169,16 @@ int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe
 	evlist__delete(evlist);
 	return err;
 }
+
+bool test__tsc_is_supported(void)
+{
+	/*
+	 * Except x86_64/i386 and Arm64, other archs don't support TSC in perf.
+	 * Just enable the test for x86_64/i386 and Arm64 archs.
+	 */
+#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__)
+	return true;
+#else
+	return false;
+#endif
+}

tools/perf/tests/tests.h

@@ -129,6 +129,7 @@ int test__perf_time_to_tsc(struct test *test, int subtest);
 bool test__bp_signal_is_supported(void);
 bool test__bp_account_is_supported(void);
 bool test__wp_is_supported(void);
+bool test__tsc_is_supported(void);
 
 #if defined(__arm__) || defined(__aarch64__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT