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perf tools: Add support for parsing PERF_SAMPLE_READ sample type

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Adding support to parse out the PERF_SAMPLE_READ sample bits.  The code
contains both single and group format specification.

This code parse out and prepare PERF_SAMPLE_READ data into the
perf_sample struct. It will be used for group leader sampling feature
comming in shortly.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-0tgdoln5rwk3wocshb442cl3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2012-10-10 17:38:13 +02:00
committed by Arnaldo Carvalho de Melo
parent e2b5abe0c8
commit 9ede473cc9
5 changed files with 112 additions and 2 deletions
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30
tools/perf/util/evsel.c
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@@ -1096,8 +1096,34 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
}
if (type & PERF_SAMPLE_READ) {
fprintf(stderr, "PERF_SAMPLE_READ is unsupported for now\n");
return -1;
u64 read_format = evsel->attr.read_format;
if (read_format & PERF_FORMAT_GROUP)
data->read.group.nr = *array;
else
data->read.one.value = *array;
array++;
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
data->read.time_enabled = *array;
array++;
}
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
data->read.time_running = *array;
array++;
}
/* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
if (read_format & PERF_FORMAT_GROUP) {
data->read.group.values = (struct sample_read_value *) array;
array = (void *) array + data->read.group.nr *
sizeof(struct sample_read_value);
} else {
data->read.one.id = *array;
array++;
}
}
if (type & PERF_SAMPLE_CALLCHAIN) {