[PATCH v1 5/6] perf cs-etm: Generate branch sample when receiving a CS_ETM_TRACE_ON packet

[Leo Yan]

If one CS_ETM_TRACE_ON packet is inserted, we miss to generate branch
sample for the previous CS_ETM_RANGE packet.

This patch is to generate branch sample when receiving a CS_ETM_TRACE_ON
packet, so this can save complete info for the previous CS_ETM_RANGE
packet just before CS_ETM_TRACE_ON packet.

Signed-off-by: Leo Yan <leo....@linaro.org>
---
 tools/perf/util/cs-etm.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 976db84..d3b7942 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -935,6 +935,7 @@ static int cs_etm__sample(struct cs_etm_queue *etmq)
 static int cs_etm__flush(struct cs_etm_queue *etmq)
 {
        int err = 0;
+       struct cs_etm_auxtrace *etm = etmq->etm;
        struct cs_etm_packet *tmp;
 
        if (!etmq->prev_packet)
@@ -965,6 +966,13 @@ static int cs_etm__flush(struct cs_etm_queue *etmq)
 
        }
 
+       if (etm->sample_branches &&
+           etmq->prev_packet->sample_type == CS_ETM_RANGE) {
+               err = cs_etm__synth_branch_sample(etmq);
+               if (err)
+                       return err;
+       }
+
 swap_packet:
        if (etmq->etm->synth_opts.last_branch) {
                /*
-- 
2.7.4