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perf cs-etm: Don't check cs_etm_queue::prev_packet validity
Since cs_etm_queue::prev_packet is allocated for all cases, it will never be NULL pointer; now validity checking prev_packet is pointless, remove all of them. Signed-off-by: Leo Yan <leo.yan@linaro.org> Tested-by: Robert Walker <robert.walker@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Suzuki K Poulouse <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190428083228.20246-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1 changed files with 1 additions and 5 deletions
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@ -981,7 +981,6 @@ static int cs_etm__sample(struct cs_etm_queue *etmq)
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* PREV_PACKET is a branch.
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*/
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if (etm->synth_opts.last_branch &&
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etmq->prev_packet &&
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etmq->prev_packet->sample_type == CS_ETM_RANGE &&
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etmq->prev_packet->last_instr_taken_branch)
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cs_etm__update_last_branch_rb(etmq);
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@ -1014,7 +1013,7 @@ static int cs_etm__sample(struct cs_etm_queue *etmq)
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etmq->period_instructions = instrs_over;
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}
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if (etm->sample_branches && etmq->prev_packet) {
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if (etm->sample_branches) {
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bool generate_sample = false;
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/* Generate sample for tracing on packet */
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@ -1071,9 +1070,6 @@ static int cs_etm__flush(struct cs_etm_queue *etmq)
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struct cs_etm_auxtrace *etm = etmq->etm;
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struct cs_etm_packet *tmp;
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if (!etmq->prev_packet)
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return 0;
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/* Handle start tracing packet */
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if (etmq->prev_packet->sample_type == CS_ETM_EMPTY)
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goto swap_packet;
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