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author | Ingo Molnar <mingo@elte.hu> | 2009-09-13 09:44:29 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-09-13 10:22:51 +0200 |
commit | 1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d (patch) | |
tree | f4646be85f1f52c5f239ca47930958e85ed119ff /tools/perf | |
parent | b5fae128e41021889777f8ead810cbd2a8b249fc (diff) | |
download | kernel_samsung_smdk4412-1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d.zip kernel_samsung_smdk4412-1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d.tar.gz kernel_samsung_smdk4412-1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d.tar.bz2 |
perf sched: Implement the 'perf sched record' subcommand
Implement the 'perf sched record' subcommand that adds a
default list of events, turns on raw sampling and system-wide
tracing and passes off the rest of the command to perf record.
This is more convenient than having to specify the events all
the time.
Before:
$ perf record -a -R -e sched:sched_switch:r -e sched:sched_stat_wait:r -e sched:sched_stat_sleep:r -e sched:sched_stat_iowait:r -e sched:sched_process_exit:r -e sched:sched_process_fork:r -e sched:sched_wakeup:r -e sched:sched_migrate_task:r -c 1 sleep 1
After:
$ perf sched record -f sleep 1
Also fix an assumption in the event string parser that assumed
that strings passed in can be modified. (In this case they wont
be as they come from a readonly constant section.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/builtin-sched.c | 39 | ||||
-rw-r--r-- | tools/perf/util/parse-events.c | 3 |
2 files changed, 39 insertions, 3 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index b72544f..ede40c1 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1656,6 +1656,40 @@ static void setup_sorting(void) sort_dimension__add((char *)"pid", &cmp_pid); } +static const char *record_args[] = { + "record", + "-a", + "-R", + "-c", "1", + "-e", "sched:sched_switch:r", + "-e", "sched:sched_stat_wait:r", + "-e", "sched:sched_stat_sleep:r", + "-e", "sched:sched_stat_iowait:r", + "-e", "sched:sched_process_exit:r", + "-e", "sched:sched_process_fork:r", + "-e", "sched:sched_wakeup:r", + "-e", "sched:sched_migrate_task:r", +}; + +static int __cmd_record(int argc, const char **argv) +{ + unsigned int rec_argc, i, j; + const char **rec_argv; + + rec_argc = ARRAY_SIZE(record_args) + argc - 1; + rec_argv = calloc(rec_argc + 1, sizeof(char *)); + + for (i = 0; i < ARRAY_SIZE(record_args); i++) + rec_argv[i] = strdup(record_args[i]); + + for (j = 1; j < (unsigned int)argc; j++, i++) + rec_argv[i] = argv[j]; + + BUG_ON(i != rec_argc); + + return cmd_record(i, rec_argv, NULL); +} + int cmd_sched(int argc, const char **argv, const char *prefix __used) { symbol__init(); @@ -1666,7 +1700,9 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used) if (!argc) usage_with_options(sched_usage, sched_options); - if (!strncmp(argv[0], "lat", 3)) { + if (!strncmp(argv[0], "rec", 3)) { + return __cmd_record(argc, argv); + } else if (!strncmp(argv[0], "lat", 3)) { trace_handler = &lat_ops; if (argc > 1) { argc = parse_options(argc, argv, latency_options, latency_usage, 0); @@ -1687,6 +1723,5 @@ int cmd_sched(int argc, const char **argv, const char *prefix __used) usage_with_options(sched_usage, sched_options); } - return 0; } diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index d06c66c..034245e 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -525,7 +525,8 @@ static enum event_result parse_tracepoint_event(const char **strp, flags = strchr(evt_name, ':'); if (flags) { - *flags = '\0'; + /* split it out: */ + evt_name = strndup(evt_name, flags - evt_name); flags++; } |