diff options
author | Adrian Hunter <adrian.hunter@intel.com> | 2019-06-10 10:27:56 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-06-17 15:57:17 -0300 |
commit | e62ca655eea7ad4956929f647c2d9fb36aeff90e (patch) | |
tree | 3f45a85eef226db7386ef5f98783ac5695f42103 | |
parent | 4c35595e1ea7585d09eb80096f47af237061e795 (diff) |
perf intel-pt: Prepare to synthesize PEBS samples
Add infrastructure to prepare for synthesizing PEBS samples but leave
the actual synthesis to later patches.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190610072803.10456-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r-- | tools/perf/util/intel-pt.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 893cef494a43..cc91c1413c22 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -101,6 +101,9 @@ struct intel_pt { u64 pwrx_id; u64 cbr_id; + bool sample_pebs; + struct perf_evsel *pebs_evsel; + u64 tsc_bit; u64 mtc_bit; u64 mtc_freq_bits; @@ -1535,6 +1538,11 @@ static int intel_pt_synth_pwrx_sample(struct intel_pt_queue *ptq) pt->pwr_events_sample_type); } +static int intel_pt_synth_pebs_sample(struct intel_pt_queue *ptq __maybe_unused) +{ + return 0; +} + static int intel_pt_synth_error(struct intel_pt *pt, int code, int cpu, pid_t pid, pid_t tid, u64 ip, u64 timestamp) { @@ -1622,6 +1630,16 @@ static int intel_pt_sample(struct intel_pt_queue *ptq) ptq->ipc_cyc_cnt = ptq->state->tot_cyc_cnt; } + /* + * Do PEBS first to allow for the possibility that the PEBS timestamp + * precedes the current timestamp. + */ + if (pt->sample_pebs && state->type & INTEL_PT_BLK_ITEMS) { + err = intel_pt_synth_pebs_sample(ptq); + if (err) + return err; + } + if (pt->sample_pwr_events && (state->type & INTEL_PT_PWR_EVT)) { if (state->type & INTEL_PT_CBR_CHG) { err = intel_pt_synth_cbr_sample(ptq); |