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authorIngo Molnar <mingo@elte.hu>2009-09-13 09:44:29 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-13 10:22:51 +0200
commit1fc35b29b4098aa3bf9fc9acb4c1615d0b5dd95d (patch)
treef4646be85f1f52c5f239ca47930958e85ed119ff /tools/perf
parentb5fae128e41021889777f8ead810cbd2a8b249fc (diff)
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.c39
-rw-r--r--tools/perf/util/parse-events.c3
2 files changed, 39 insertions, 3 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index b72544f2b96..ede40c1429a 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 d06c66cd358..034245e4681 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++;
}