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perf tools: Add event_update event unit type

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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>
This commit is contained in:
Jiri Olsa
2015-10-25 15:51:37 +01:00
committed by Arnaldo Carvalho de Melo
parent ffe777254c
commit a6e5281780
7 changed files with 99 additions and 0 deletions
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44
tools/perf/util/header.c
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@@ -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;
}