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Avoid a switch, just use a lookup array. Switch the type to unsigned to avoid checking negative values. Signed-off-by: Ian Rogers --- tools/perf/util/parse-events.c | 31 +++++++++++++------------------ tools/perf/util/parse-events.h | 2 +- 2 files changed, 14 insertions(+), 19 deletions(-) diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 7f34e602fc08..9dd0216cfae4 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -135,26 +135,21 @@ const struct event_symbol event_symbols_sw[PERF_COUNT= _SW_MAX] =3D { }, }; =20 -const char *event_type(int type) -{ - switch (type) { - case PERF_TYPE_HARDWARE: - return "hardware"; - - case PERF_TYPE_SOFTWARE: - return "software"; - - case PERF_TYPE_TRACEPOINT: - return "tracepoint"; - - case PERF_TYPE_HW_CACHE: - return "hardware-cache"; +static const char *const event_types[] =3D { + [PERF_TYPE_HARDWARE] =3D "hardware", + [PERF_TYPE_SOFTWARE] =3D "software", + [PERF_TYPE_TRACEPOINT] =3D "tracepoint", + [PERF_TYPE_HW_CACHE] =3D "hardware-cache", + [PERF_TYPE_RAW] =3D "raw", + [PERF_TYPE_BREAKPOINT] =3D "breakpoint", +}; =20 - default: - break; - } +const char *event_type(size_t type) +{ + if (type >=3D PERF_TYPE_MAX) + return "unknown"; =20 - return "unknown"; + return event_types[type]; } =20 static char *get_config_str(const struct parse_events_terms *head_terms, diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 1c20ed0879aa..b47bf2810112 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -21,7 +21,7 @@ struct option; struct perf_pmu; struct strbuf; =20 -const char *event_type(int type); +const char *event_type(size_t type); =20 /* Arguments encoded in opt->value. */ struct parse_events_option_args { --=20 2.50.0.rc0.642.g800a2b2222-goog