diff options
Diffstat (limited to 'Documentation/perf_counter/util/parse-events.c')
| -rw-r--r-- | Documentation/perf_counter/util/parse-events.c | 82 |
1 files changed, 72 insertions, 10 deletions
diff --git a/Documentation/perf_counter/util/parse-events.c b/Documentation/perf_counter/util/parse-events.c index 77d0917d55d..88c903eb260 100644 --- a/Documentation/perf_counter/util/parse-events.c +++ b/Documentation/perf_counter/util/parse-events.c @@ -8,6 +8,7 @@ int nr_counters; __u64 event_id[MAX_COUNTERS] = { }; +int event_mask[MAX_COUNTERS]; struct event_symbol { __u64 event; @@ -37,6 +38,64 @@ static struct event_symbol event_symbols[] = { {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "migrations", }, }; +#define __PERF_COUNTER_FIELD(config, name) \ + ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT) + +#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW) +#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG) +#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE) +#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT) + +static char *hw_event_names[] = { + "CPU cycles", + "instructions", + "cache references", + "cache misses", + "branches", + "branch misses", + "bus cycles", +}; + +static char *sw_event_names[] = { + "cpu clock ticks", + "task clock ticks", + "pagefaults", + "context switches", + "CPU migrations", + "minor faults", + "major faults", +}; + +char *event_name(int ctr) +{ + __u64 config = event_id[ctr]; + int type = PERF_COUNTER_TYPE(config); + int id = PERF_COUNTER_ID(config); + static char buf[32]; + + if (PERF_COUNTER_RAW(config)) { + sprintf(buf, "raw 0x%llx", PERF_COUNTER_CONFIG(config)); + return buf; + } + + switch (type) { + case PERF_TYPE_HARDWARE: + if (id < PERF_HW_EVENTS_MAX) + return hw_event_names[id]; + return "unknown-hardware"; + + case PERF_TYPE_SOFTWARE: + if (id < PERF_SW_EVENTS_MAX) + return sw_event_names[id]; + return "unknown-software"; + + default: + break; + } + + return "unknown"; +} + /* * Each event can have multiple symbolic names. * Symbolic names are (almost) exactly matched. @@ -46,12 +105,23 @@ static __u64 match_event_symbols(const char *str) __u64 config, id; int type; unsigned int i; + char mask_str[4]; if (sscanf(str, "r%llx", &config) == 1) return config | PERF_COUNTER_RAW_MASK; - if (sscanf(str, "%d:%llu", &type, &id) == 2) - return EID(type, id); + switch (sscanf(str, "%d:%llu:%2s", &type, &id, mask_str)) { + case 3: + if (strchr(mask_str, 'k')) + event_mask[nr_counters] |= EVENT_MASK_USER; + if (strchr(mask_str, 'u')) + event_mask[nr_counters] |= EVENT_MASK_KERNEL; + case 2: + return EID(type, id); + + default: + break; + } for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { if (!strncmp(str, event_symbols[i].symbol, @@ -86,14 +156,6 @@ again: return 0; } -#define __PERF_COUNTER_FIELD(config, name) \ - ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT) - -#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW) -#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG) -#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE) -#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT) - /* * Create the help text for the event symbols: */ |