Messages in this thread | | | Subject | Re: [PATCH v1 2/2] perf cs-etm: Don't check cs_etm_queue::prev_packet validity | From | Robert Walker <> | Date | Mon, 29 Apr 2019 15:53:55 +0100 |
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On 28/04/2019 09:32, Leo Yan wrote: > 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> > --- > tools/perf/util/cs-etm.c | 6 +----- > 1 file changed, 1 insertion(+), 5 deletions(-)
Tested-by: Robert Walker <robert.walker@arm.com>
Regards
Rob
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c > index 054b480aab04..de488b43f440 100644 > --- a/tools/perf/util/cs-etm.c > +++ b/tools/perf/util/cs-etm.c > @@ -979,7 +979,6 @@ static int cs_etm__sample(struct cs_etm_queue *etmq) > * PREV_PACKET is a branch. > */ > if (etm->synth_opts.last_branch && > - etmq->prev_packet && > etmq->prev_packet->sample_type == CS_ETM_RANGE && > etmq->prev_packet->last_instr_taken_branch) > cs_etm__update_last_branch_rb(etmq); > @@ -1012,7 +1011,7 @@ static int cs_etm__sample(struct cs_etm_queue *etmq) > etmq->period_instructions = instrs_over; > } > > - if (etm->sample_branches && etmq->prev_packet) { > + if (etm->sample_branches) { > bool generate_sample = false; > > /* Generate sample for tracing on packet */ > @@ -1069,9 +1068,6 @@ static int cs_etm__flush(struct cs_etm_queue *etmq) > struct cs_etm_auxtrace *etm = etmq->etm; > struct cs_etm_packet *tmp; > > - if (!etmq->prev_packet) > - return 0; > - > /* Handle start tracing packet */ > if (etmq->prev_packet->sample_type == CS_ETM_EMPTY) > goto swap_packet;
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