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| author | Jiri Olsa <jolsa@kernel.org> | 2020-06-02 23:47:29 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-22 16:28:08 -0300 |
| commit | 387ad33fe710758a8e1b860819a7452bceb4329a (patch) | |
| tree | 828d4602012381d3408f3f6308cff02c3471109a /tools/perf/util/parse-events.c | |
| parent | a1f8bc95c33e953e080f72be4b95176dacb423b0 (diff) | |
| download | lwn-387ad33fe710758a8e1b860819a7452bceb4329a.tar.gz lwn-387ad33fe710758a8e1b860819a7452bceb4329a.zip | |
perf tools: Add fake pmu support
Add a way to create a pmu event without the actual PMU being in place.
This way we can test metrics defined for any processor.
The interface is to define fake_pmu in struct parse_events_state data.
It will be used only in tests via special interface function added in
following changes.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200602214741.1218986-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/parse-events.c')
| -rw-r--r-- | tools/perf/util/parse-events.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 3decbb203846..4eb7bd53d048 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -1450,7 +1450,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, fprintf(stderr, "' that may result in non-fatal errors\n"); } - pmu = perf_pmu__find(name); + pmu = parse_state->fake_pmu ?: perf_pmu__find(name); if (!pmu) { char *err_str; @@ -1483,7 +1483,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, } } - if (perf_pmu__check_alias(pmu, head_config, &info)) + if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info)) return -EINVAL; if (verbose > 1) { @@ -1516,7 +1516,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state, if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) return -ENOMEM; - if (perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { + if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { struct evsel_config_term *pos, *tmp; list_for_each_entry_safe(pos, tmp, &config_terms, list) { |