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perf test: Switch cycles event to cpu-cycles

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Without a PMU perf matches an event against any PMU with the
event. Unfortunately some PMU drivers advertise a "cycles" event which
is typically just a core event. As tests assume a core event, switch
to use "cpu-cycles" that avoids the overloaded "cycles" event on
troublesome PMUs and is so far not overloaded. Note, on x86 this
changes a legacy event into a sysfs one.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers
2025-10-05 11:24:27 -07:00
committed by Namhyung Kim
parent d47c65eea8
commit 4bebf7ff3e
4 changed files with 5 additions and 5 deletions
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2
tools/perf/tests/code-reading.c
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@@ -704,7 +704,7 @@ static int do_test_code_reading(bool try_kcore)
struct map *map;
bool have_vmlinux, have_kcore;
struct dso *dso;
const char *events[] = { "cycles", "cycles:u", "cpu-clock", "cpu-clock:u", NULL };
const char *events[] = { "cpu-cycles", "cpu-cycles:u", "cpu-clock", "cpu-clock:u", NULL };
int evidx = 0;
struct perf_env host_env;