diff options
| author | Mathieu Poirier <mathieu.poirier@linaro.org> | 2019-02-12 10:16:16 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-02-14 15:18:07 -0300 |
| commit | f74f349c211e3e62bc7fe35a132918c7f2c0fafb (patch) | |
| tree | d09645faeb1bfaab3a37fae7ab3523cad400d337 /tools/perf/util/cs-etm.c | |
| parent | 23cfcd6d75cc0c1a7f95c44658dc91380fb40770 (diff) | |
| download | linux-f74f349c211e3e62bc7fe35a132918c7f2c0fafb.tar.bz2 | |
perf cs-etm: Modularize main decoder function
Making the main decoder block modular so that it can be called from
different decoding context (timeless vs. non-timeless), avoiding
to repeat code.
No change in functionality is introduced by this patch.
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/20190212171618.25355-12-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/cs-etm.c')
| -rw-r--r-- | tools/perf/util/cs-etm.c | 41 |
1 files changed, 29 insertions, 12 deletions
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c index d2c90b369e7c..cfa686fe223e 100644 --- a/tools/perf/util/cs-etm.c +++ b/tools/perf/util/cs-etm.c @@ -1491,9 +1491,36 @@ static int cs_etm__set_sample_flags(struct cs_etm_queue *etmq) return 0; } +static int cs_etm__decode_data_block(struct cs_etm_queue *etmq) +{ + int ret = 0; + size_t processed = 0; + + /* + * Packets are decoded and added to the decoder's packet queue + * until the decoder packet processing callback has requested that + * processing stops or there is nothing left in the buffer. Normal + * operations that stop processing are a timestamp packet or a full + * decoder buffer queue. + */ + ret = cs_etm_decoder__process_data_block(etmq->decoder, + etmq->offset, + &etmq->buf[etmq->buf_used], + etmq->buf_len, + &processed); + if (ret) + goto out; + + etmq->offset += processed; + etmq->buf_used += processed; + etmq->buf_len -= processed; + +out: + return ret; +} + static int cs_etm__run_decoder(struct cs_etm_queue *etmq) { - size_t processed; int err = 0; /* Go through each buffer in the queue and decode them one by one */ @@ -1513,20 +1540,10 @@ static int cs_etm__run_decoder(struct cs_etm_queue *etmq) /* Run trace decoder until buffer consumed or end of trace */ do { - processed = 0; - err = cs_etm_decoder__process_data_block( - etmq->decoder, - etmq->offset, - &etmq->buf[etmq->buf_used], - etmq->buf_len, - &processed); + err = cs_etm__decode_data_block(etmq); if (err) return err; - etmq->offset += processed; - etmq->buf_used += processed; - etmq->buf_len -= processed; - /* Process each packet in this chunk */ while (1) { err = cs_etm_decoder__get_packet(etmq->decoder, |