diff options
author | Thomas Renninger <trenn@suse.de> | 2011-01-03 16:50:45 (GMT) |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2011-01-04 07:16:54 (GMT) |
commit | 20c457b8587bee4644d998331d9e13be82e05b4c (patch) | |
tree | e1864952316ad24af3bea22d09753e043eb6ee75 /tools/perf/util | |
parent | 25e41933b58777f2d020c3b0186b430ea004ec28 (diff) | |
download | linux-fsl-qoriq-20c457b8587bee4644d998331d9e13be82e05b4c.tar.xz |
perf timechart: Adjust perf timechart to the new power events
builtin-timechart must only pass -e power:xy events if they are supported by
the running kernel, otherwise try to fetch the old power:power{start,end}
events.
For this I added the tiny helper function:
int is_valid_tracepoint(const char *event_string)
to parse-events.[hc], which could be more generic as an interface and support
hardware/software/... events, not only tracepoints, but someone else could
extend that if needed...
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
LKML-Reference: <1294073445-14812-4-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util')
-rw-r--r-- | tools/perf/util/parse-events.c | 41 | ||||
-rw-r--r-- | tools/perf/util/parse-events.h | 1 |
2 files changed, 42 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 3a142e9..649083f 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -913,6 +913,47 @@ static void print_tracepoint_events(void) } /* + * Check whether event is in <debugfs_mount_point>/tracing/events + */ + +int is_valid_tracepoint(const char *event_string) +{ + DIR *sys_dir, *evt_dir; + struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent; + char evt_path[MAXPATHLEN]; + char dir_path[MAXPATHLEN]; + + if (debugfs_valid_mountpoint(debugfs_path)) + return 0; + + sys_dir = opendir(debugfs_path); + if (!sys_dir) + return 0; + + for_each_subsystem(sys_dir, sys_dirent, sys_next) { + + snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path, + sys_dirent.d_name); + evt_dir = opendir(dir_path); + if (!evt_dir) + continue; + + for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) { + snprintf(evt_path, MAXPATHLEN, "%s:%s", + sys_dirent.d_name, evt_dirent.d_name); + if (!strcmp(evt_path, event_string)) { + closedir(evt_dir); + closedir(sys_dir); + return 1; + } + } + closedir(evt_dir); + } + closedir(sys_dir); + return 0; +} + +/* * Print the help text for the event symbols: */ void print_events(void) diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 0a0abc1..1c9043c 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -36,6 +36,7 @@ extern int parse_filter(const struct option *opt, const char *str, int unset); #define EVENTS_HELP_MAX (128*1024) extern void print_events(void); +extern int is_valid_tracepoint(const char *event_string); extern char debugfs_path[]; extern int valid_debugfs_mount(const char *debugfs); |