[32/63] perf cs-etm: Treat EO_TRACE element as trace discontinuity

Message ID 20181218220733.15839-33-acme@kernel.org
State New
Headers show
Series
  • Untitled series #17380
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Commit Message

Arnaldo Carvalho de Melo Dec. 18, 2018, 10:07 p.m.
From: Leo Yan <leo.yan@linaro.org>


If the decoder outputs an EO_TRACE element, it means the end of the
trace buffer; this is a discontinuity and in this case the end of trace
data needs to be saved.

This patch generates a CS_ETM_DISCONTINUITY packet for the EO_TRACE
element hereby flushing the end of trace data in cs-etm.c.

Signed-off-by: Leo Yan <leo.yan@linaro.org>

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Robert Walker <robert.walker@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1544513908-16805-8-git-send-email-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

---
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.19.2

Patch

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index bee026e76a4c..cda6f074bd03 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -409,6 +409,7 @@  static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer(
 	switch (elem->elem_type) {
 	case OCSD_GEN_TRC_ELEM_UNKNOWN:
 		break;
+	case OCSD_GEN_TRC_ELEM_EO_TRACE:
 	case OCSD_GEN_TRC_ELEM_NO_SYNC:
 	case OCSD_GEN_TRC_ELEM_TRACE_ON:
 		resp = cs_etm_decoder__buffer_discontinuity(decoder,
@@ -425,7 +426,6 @@  static ocsd_datapath_resp_t cs_etm_decoder__gen_trace_elem_printer(
 		decoder->packet_buffer[decoder->tail].exc_ret = true;
 		break;
 	case OCSD_GEN_TRC_ELEM_PE_CONTEXT:
-	case OCSD_GEN_TRC_ELEM_EO_TRACE:
 	case OCSD_GEN_TRC_ELEM_ADDR_NACC:
 	case OCSD_GEN_TRC_ELEM_TIMESTAMP:
 	case OCSD_GEN_TRC_ELEM_CYCLE_COUNT: