perf tools: Move event__parse_sample to evsel.c

To avoid linking more stuff in the python binding I'm working on, future
csets will make the sample type be taken from the evsel itself, but for
that we need to first have one file per cpu and per sample_type, not a
single perf.data file.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 118 insertions, 0 deletions

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 9a6d94299ab8..a85ae12845ea 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -355,3 +355,121 @@ out_unmap:
         }
         return -1;
 }
+
+static int event__parse_id_sample(const event_t *event, u64 type,
+                                  struct sample_data *sample)
+{
+        const u64 *array = event->sample.array;
+
+        array += ((event->header.size -
+                   sizeof(event->header)) / sizeof(u64)) - 1;
+
+        if (type & PERF_SAMPLE_CPU) {
+                u32 *p = (u32 *)array;
+                sample->cpu = *p;
+                array--;
+        }
+
+        if (type & PERF_SAMPLE_STREAM_ID) {
+                sample->stream_id = *array;
+                array--;
+        }
+
+        if (type & PERF_SAMPLE_ID) {
+                sample->id = *array;
+                array--;
+        }
+
+        if (type & PERF_SAMPLE_TIME) {
+                sample->time = *array;
+                array--;
+        }
+
+        if (type & PERF_SAMPLE_TID) {
+                u32 *p = (u32 *)array;
+                sample->pid = p[0];
+                sample->tid = p[1];
+        }
+
+        return 0;
+}
+
+int event__parse_sample(const event_t *event, u64 type, bool sample_id_all,
+                        struct sample_data *data)
+{
+        const u64 *array;
+
+        data->cpu = data->pid = data->tid = -1;
+        data->stream_id = data->id = data->time = -1ULL;
+
+        if (event->header.type != PERF_RECORD_SAMPLE) {
+                if (!sample_id_all)
+                        return 0;
+                return event__parse_id_sample(event, type, data);
+        }
+
+        array = event->sample.array;
+
+        if (type & PERF_SAMPLE_IP) {
+                data->ip = event->ip.ip;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_TID) {
+                u32 *p = (u32 *)array;
+                data->pid = p[0];
+                data->tid = p[1];
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_TIME) {
+                data->time = *array;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_ADDR) {
+                data->addr = *array;
+                array++;
+        }
+
+        data->id = -1ULL;
+        if (type & PERF_SAMPLE_ID) {
+                data->id = *array;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_STREAM_ID) {
+                data->stream_id = *array;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_CPU) {
+                u32 *p = (u32 *)array;
+                data->cpu = *p;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_PERIOD) {
+                data->period = *array;
+                array++;
+        }
+
+        if (type & PERF_SAMPLE_READ) {
+                fprintf(stderr, "PERF_SAMPLE_READ is unsuported for now\n");
+                return -1;
+        }
+
+        if (type & PERF_SAMPLE_CALLCHAIN) {
+                data->callchain = (struct ip_callchain *)array;
+                array += 1 + data->callchain->nr;
+        }
+
+        if (type & PERF_SAMPLE_RAW) {
+                u32 *p = (u32 *)array;
+                data->raw_size = *p;
+                p++;
+                data->raw_data = p;
+        }
+
+        return 0;
+}