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Subject[tip:perf/core] perf cs-etm: Introducing function cs_etm_decoder__init_dparams()
Commit-ID:  65963e5b4dfa9b9ba4bdf7ef8dc7d4424cfd2097
Gitweb: https://git.kernel.org/tip/65963e5b4dfa9b9ba4bdf7ef8dc7d4424cfd2097
Author: Mathieu Poirier <mathieu.poirier@linaro.org>
AuthorDate: Tue, 12 Feb 2019 10:16:09 -0700
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 14 Feb 2019 15:18:06 -0300

perf cs-etm: Introducing function cs_etm_decoder__init_dparams()

Introducing function cs_etm_decoder__init_dparams() to avoid repeating
code at two different places.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki K Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190212171618.25355-5-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 3 +-
tools/perf/util/cs-etm.c | 41 +++++++++++++++++--------
2 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
index 7e6a8850be4a..663309486784 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.h
@@ -105,9 +105,10 @@ enum {
CS_ETM_PROTO_PTM,
};

-enum {
+enum cs_etm_decoder_operation {
CS_ETM_OPERATION_PRINT = 1,
CS_ETM_OPERATION_DECODE,
+ CS_ETM_OPERATION_MAX,
};

int cs_etm_decoder__process_data_block(struct cs_etm_decoder *decoder,
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index f396fee9bb95..3011c6cae531 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -136,6 +136,28 @@ static void cs_etm__packet_dump(const char *pkt_string)
fflush(stdout);
}

+static int cs_etm__init_decoder_params(struct cs_etm_decoder_params *d_params,
+ struct cs_etm_queue *etmq,
+ enum cs_etm_decoder_operation mode)
+{
+ int ret = -EINVAL;
+
+ if (!(mode < CS_ETM_OPERATION_MAX))
+ goto out;
+
+ d_params->packet_printer = cs_etm__packet_dump;
+ d_params->operation = mode;
+ d_params->data = etmq;
+ d_params->formatted = true;
+ d_params->fsyncs = false;
+ d_params->hsyncs = false;
+ d_params->frame_aligned = true;
+
+ ret = 0;
+out:
+ return ret;
+}
+
static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
struct auxtrace_buffer *buffer)
{
@@ -182,12 +204,9 @@ static void cs_etm__dump_event(struct cs_etm_auxtrace *etm,
}

/* Set decoder parameters to simply print the trace packets */
- d_params.packet_printer = cs_etm__packet_dump;
- d_params.operation = CS_ETM_OPERATION_PRINT;
- d_params.formatted = true;
- d_params.fsyncs = false;
- d_params.hsyncs = false;
- d_params.frame_aligned = true;
+ if (cs_etm__init_decoder_params(&d_params, NULL,
+ CS_ETM_OPERATION_PRINT))
+ return;

decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);

@@ -436,13 +455,9 @@ static struct cs_etm_queue *cs_etm__alloc_queue(struct cs_etm_auxtrace *etm,
}

/* Set decoder parameters to simply print the trace packets */
- d_params.packet_printer = cs_etm__packet_dump;
- d_params.operation = CS_ETM_OPERATION_DECODE;
- d_params.formatted = true;
- d_params.fsyncs = false;
- d_params.hsyncs = false;
- d_params.frame_aligned = true;
- d_params.data = etmq;
+ if (cs_etm__init_decoder_params(&d_params, etmq,
+ CS_ETM_OPERATION_DECODE))
+ goto out_free;

etmq->decoder = cs_etm_decoder__new(etm->num_cpu, &d_params, t_params);

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