diff options
Diffstat (limited to 'Documentation/perf_counter/builtin-record.c')
| -rw-r--r-- | Documentation/perf_counter/builtin-record.c | 154 |
1 files changed, 6 insertions, 148 deletions
diff --git a/Documentation/perf_counter/builtin-record.c b/Documentation/perf_counter/builtin-record.c index f12a7822fcf1..6fa6ed664950 100644 --- a/Documentation/perf_counter/builtin-record.c +++ b/Documentation/perf_counter/builtin-record.c @@ -3,44 +3,17 @@ #include "perf.h" #include "util/util.h" #include "util/parse-options.h" +#include "util/parse-events.h" #include "util/exec_cmd.h" -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <unistd.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <limits.h> -#include <assert.h> -#include <fcntl.h> -#include <stdio.h> -#include <errno.h> -#include <time.h> #include <sched.h> -#include <pthread.h> - -#include <sys/syscall.h> -#include <sys/ioctl.h> -#include <sys/poll.h> -#include <sys/prctl.h> -#include <sys/wait.h> -#include <sys/uio.h> -#include <sys/mman.h> - -#include <linux/unistd.h> -#include <linux/types.h> - - #define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1) #define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask)) -static int nr_counters = 0; -static __u64 event_id[MAX_COUNTERS] = { }; static int default_interval = 100000; static int event_count[MAX_COUNTERS]; + static int fd[MAX_NR_CPUS][MAX_COUNTERS]; static int nr_cpus = 0; static unsigned int page_size; @@ -420,131 +393,16 @@ static int __cmd_record(int argc, const char **argv) return 0; } -struct event_symbol { - __u64 event; - char *symbol; -}; - -static struct event_symbol event_symbols[] = { - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cpu-cycles", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cycles", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_INSTRUCTIONS), "instructions", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_REFERENCES), "cache-references", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_MISSES), "cache-misses", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branch-instructions", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branches", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_MISSES), "branch-misses", }, - {EID(PERF_TYPE_HARDWARE, PERF_COUNT_BUS_CYCLES), "bus-cycles", }, - - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK), "cpu-clock", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK), "task-clock", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "page-faults", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "faults", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MIN), "minor-faults", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MAJ), "major-faults", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "context-switches", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "cs", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "cpu-migrations", }, - {EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "migrations", }, -}; - -/* - * Each event can have multiple symbolic names. - * Symbolic names are (almost) exactly matched. - */ -static __u64 match_event_symbols(const char *str) -{ - __u64 config, id; - int type; - unsigned int i; - - 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); - - for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { - if (!strncmp(str, event_symbols[i].symbol, - strlen(event_symbols[i].symbol))) - return event_symbols[i].event; - } - - return ~0ULL; -} - -static int parse_events(const struct option *opt, const char *str, int unset) -{ - __u64 config; - -again: - if (nr_counters == MAX_COUNTERS) - return -1; - - config = match_event_symbols(str); - if (config == ~0ULL) - return -1; - - event_id[nr_counters] = config; - nr_counters++; - - str = strstr(str, ","); - if (str) { - str++; - goto again; - } - - return 0; -} - -static char events_help[100000]; - -#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 void create_events_help(void) -{ - unsigned int i; - char *str; - __u64 e; - - str = events_help; - - str += sprintf(str, - "event name: ["); - - for (i = 0; i < ARRAY_SIZE(event_symbols); i++) { - int type, id; - - e = event_symbols[i].event; - type = PERF_COUNTER_TYPE(e); - id = PERF_COUNTER_ID(e); - - if (i) - str += sprintf(str, "|"); - - str += sprintf(str, "%s", - event_symbols[i].symbol); - } - - str += sprintf(str, "|rNNN]"); -} - static const char * const record_usage[] = { "perf record [<options>] <command>", NULL }; +static char events_help_msg[EVENTS_HELP_MAX]; + const struct option options[] = { OPT_CALLBACK('e', "event", NULL, "event", - events_help, parse_events), + events_help_msg, parse_events), OPT_INTEGER('c', "count", &default_interval, "event period to sample"), OPT_INTEGER('m', "mmap-pages", &mmap_pages, @@ -566,7 +424,7 @@ int cmd_record(int argc, const char **argv, const char *prefix) { int counter; - create_events_help(); + create_events_help(events_help_msg); argc = parse_options(argc, argv, options, record_usage, 0); if (!argc) |