diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-06-04 16:00:05 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-06-10 16:20:12 -0300 |
| commit | 6c1f0b18ac3361837dbe53e794e28096285fb4f0 (patch) | |
| tree | 83d42a7ecfc16c2c4a08e72efe1755ad0140dd81 | |
| parent | 6492e5f013d9975d68528150edadead91e97a78a (diff) | |
perf intel-pt: Add reposition parameter to intel_pt_get_data()
When the decoder gets the next trace buffer, some state is reset if the
buffer is not consecutive to the previous buffer. Add a parameter
'reposition' so that can be done also to support a "fast forward"
facility.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index 70bff7bb79f3..dde6a7a97a7a 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -502,7 +502,7 @@ static void intel_pt_reposition(struct intel_pt_decoder *decoder) decoder->have_tma = false; } -static int intel_pt_get_data(struct intel_pt_decoder *decoder) +static int intel_pt_get_data(struct intel_pt_decoder *decoder, bool reposition) { struct intel_pt_buffer buffer = { .buf = 0, }; int ret; @@ -519,7 +519,7 @@ static int intel_pt_get_data(struct intel_pt_decoder *decoder) intel_pt_log("No more data\n"); return -ENODATA; } - if (!buffer.consecutive) { + if (!buffer.consecutive || reposition) { intel_pt_reposition(decoder); decoder->ref_timestamp = buffer.ref_timestamp; decoder->state.trace_nr = buffer.trace_nr; @@ -531,10 +531,11 @@ static int intel_pt_get_data(struct intel_pt_decoder *decoder) return 0; } -static int intel_pt_get_next_data(struct intel_pt_decoder *decoder) +static int intel_pt_get_next_data(struct intel_pt_decoder *decoder, + bool reposition) { if (!decoder->next_buf) - return intel_pt_get_data(decoder); + return intel_pt_get_data(decoder, reposition); decoder->buf = decoder->next_buf; decoder->len = decoder->next_len; @@ -553,7 +554,7 @@ static int intel_pt_get_split_packet(struct intel_pt_decoder *decoder) len = decoder->len; memcpy(buf, decoder->buf, len); - ret = intel_pt_get_data(decoder); + ret = intel_pt_get_data(decoder, false); if (ret) { decoder->pos += old_len; return ret < 0 ? ret : -EINVAL; @@ -879,7 +880,7 @@ static int intel_pt_get_next_packet(struct intel_pt_decoder *decoder) decoder->len -= decoder->pkt_step; if (!decoder->len) { - ret = intel_pt_get_next_data(decoder); + ret = intel_pt_get_next_data(decoder, false); if (ret) return ret; } @@ -2369,7 +2370,7 @@ static int intel_pt_get_split_psb(struct intel_pt_decoder *decoder, decoder->pos += decoder->len; decoder->len = 0; - ret = intel_pt_get_next_data(decoder); + ret = intel_pt_get_next_data(decoder, false); if (ret) return ret; @@ -2395,7 +2396,7 @@ static int intel_pt_scan_for_psb(struct intel_pt_decoder *decoder) intel_pt_log("Scanning for PSB\n"); while (1) { if (!decoder->len) { - ret = intel_pt_get_next_data(decoder); + ret = intel_pt_get_next_data(decoder, false); if (ret) return ret; } |