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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-11-12 04:28:50 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-11-28 16:37:29 +0400
commit81e36bffad95e015af9741b5b1ee16afe08aab05 (patch)
tree3468b3f8e1109e8e1d89d5d910d3a533bf6da70e /tools/perf/util/evlist.c
parentd04b35f8085f0d4c5c874515b8f65e7664357148 (diff)
downloadlinux-81e36bffad95e015af9741b5b1ee16afe08aab05.tar.xz
perf evlist: Introduce id_hdr_size method out of perf_session
We will need this when not using perf_session in cases like 'perf top' and strace where no perf.data file is created nor consumed. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-za923wjc41q5xot5vrhuhj3j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r--tools/perf/util/evlist.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 81237dcde1fd..d44e3df13a8f 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -625,6 +625,38 @@ u64 perf_evlist__sample_type(const struct perf_evlist *evlist)
return first->attr.sample_type;
}
+u16 perf_evlist__id_hdr_size(const struct perf_evlist *evlist)
+{
+ struct perf_evsel *first;
+ struct perf_sample *data;
+ u64 sample_type;
+ u16 size = 0;
+
+ first = list_entry(evlist->entries.next, struct perf_evsel, node);
+
+ if (!first->attr.sample_id_all)
+ goto out;
+
+ sample_type = first->attr.sample_type;
+
+ if (sample_type & PERF_SAMPLE_TID)
+ size += sizeof(data->tid) * 2;
+
+ if (sample_type & PERF_SAMPLE_TIME)
+ size += sizeof(data->time);
+
+ if (sample_type & PERF_SAMPLE_ID)
+ size += sizeof(data->id);
+
+ if (sample_type & PERF_SAMPLE_STREAM_ID)
+ size += sizeof(data->stream_id);
+
+ if (sample_type & PERF_SAMPLE_CPU)
+ size += sizeof(data->cpu) * 2;
+out:
+ return size;
+}
+
bool perf_evlist__valid_sample_id_all(const struct perf_evlist *evlist)
{
struct perf_evsel *pos, *first;