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| author |   Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2016-07-12 19:04:43 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-13 23:09:05 -0300 |
| commit | 36a009fe07bdecd201335f982babb8af34b603e2 (patch) | |
| tree | 5fbbcbbe1835c309924aa8be8f05580ea3814eef /tools/perf/util/probe-file.c | |
| parent | perf probe: Fix to show correct error message for $vars and $params (diff) | |
| download | linux-dev-36a009fe07bdecd201335f982babb8af34b603e2.tar.xz linux-dev-36a009fe07bdecd201335f982babb8af34b603e2.zip | |
perf probe: Accept %sdt and %cached event name
To improve usability, support %[PROVIDER:]SDTEVENT format to add new
probes on SDT and cached events.
e.g.
----
# perf probe -x /lib/libc-2.17.so %lll_lock_wait_private
Added new event:
sdt_libc:lll_lock_wait_private (on %lll_lock_wait_private in /usr/lib/libc-2.17.so)
You can now use it in all perf tools, such as:
perf record -e sdt_libc:lll_lock_wait_private -aR sleep 1
# perf probe -l | more
sdt_libc:lll_lock_wait_private (on __lll_lock_wait_private+21 in /usr/lib/libc-2.17.so)
----
Note that this is not only for SDT events, but also normal
events with event-name.
e.g. define "myevent" on cache (-n doesn't add the real probe)
----
# perf probe -x ./perf --cache -n --add 'myevent=dso__load $params'
----
Reuse the "myevent" from cache as below.
----
# perf probe -x ./perf %myevent
----
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/146831788372.17065.3645054540325909346.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/probe-file.c')
| -rw-r--r-- | tools/perf/util/probe-file.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c index e705a742ee1e..fc16b172579f 100644 --- a/tools/perf/util/probe-file.c +++ b/tools/perf/util/probe-file.c @@ -547,6 +547,15 @@ probe_cache__find(struct probe_cache *pcache, struct perf_probe_event *pev) return NULL; list_for_each_entry(entry, &pcache->entries, node) { + if (pev->sdt) { + if (entry->pev.event && + streql(entry->pev.event, pev->event) && + (!pev->group || + streql(entry->pev.group, pev->group))) + goto found; + + continue; + } /* Hit if same event name or same command-string */ if ((pev->event && (streql(entry->pev.group, pev->group) && |