diff options
| author |   Jiri Olsa <jolsa@kernel.org> | 2015-10-25 15:51:37 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-12-17 15:11:10 -0300 |
| commit | a6e5281780d1da65c15ce529707f43eb4a6df856 (patch) | |
| tree | a4a9167883eabb643111e2923609f596bbc6d2fa /tools/perf/util | |
| parent | perf tools: Add event_update user level event (diff) | |
| download | linux-dev-a6e5281780d1da65c15ce529707f43eb4a6df856.tar.xz linux-dev-a6e5281780d1da65c15ce529707f43eb4a6df856.zip | |
perf tools: Add event_update event unit type
Adding unit type 'event update' event, that stores/transfer events unit
name. The unit name is part of the perf stat output data.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-22-git-send-email-jolsa@kernel.org
[ Rename __alloc() to __new() for consistency ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/event.h | 4 | ||||
| -rw-r--r-- | tools/perf/util/header.c | 44 | ||||
| -rw-r--r-- | tools/perf/util/header.h | 3 |
3 files changed, 51 insertions, 0 deletions
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 6966a4b7c0f0..64c4cdf5aada 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -308,6 +308,10 @@ struct attr_event { u64 id[]; }; +enum { + PERF_EVENT_UPDATE__UNIT = 0, +}; + struct event_update_event { struct perf_event_header header; u64 type; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 6b4e00220a5a..5759ebfde666 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2686,6 +2686,43 @@ int perf_event__synthesize_attr(struct perf_tool *tool, return err; } +static struct event_update_event * +event_update_event__new(size_t size, u64 type, u64 id) +{ + struct event_update_event *ev; + + size += sizeof(*ev); + size = PERF_ALIGN(size, sizeof(u64)); + + ev = zalloc(size); + if (ev) { + ev->header.type = PERF_RECORD_EVENT_UPDATE; + ev->header.size = (u16)size; + ev->type = type; + ev->id = id; + } + return ev; +} + +int +perf_event__synthesize_event_update_unit(struct perf_tool *tool, + struct perf_evsel *evsel, + perf_event__handler_t process) +{ + struct event_update_event *ev; + size_t size = strlen(evsel->unit); + int err; + + ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]); + if (ev == NULL) + return -ENOMEM; + + strncpy(ev->data, evsel->unit, size); + err = process(tool, (union perf_event *)ev, NULL, NULL); + free(ev); + return err; +} + int perf_event__synthesize_attrs(struct perf_tool *tool, struct perf_session *session, perf_event__handler_t process) @@ -2762,6 +2799,13 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, if (evsel == NULL) return -EINVAL; + switch (ev->type) { + case PERF_EVENT_UPDATE__UNIT: + evsel->unit = strdup(ev->data); + default: + break; + } + return 0; } diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index 1e843c67a4ff..6aa2b9242fc1 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -105,6 +105,9 @@ int perf_event__synthesize_attr(struct perf_tool *tool, int perf_event__synthesize_attrs(struct perf_tool *tool, struct perf_session *session, perf_event__handler_t process); +int perf_event__synthesize_event_update_unit(struct perf_tool *tool, + struct perf_evsel *evsel, + perf_event__handler_t process); int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, struct perf_evlist **pevlist); int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, |