Synthesize a PEBS sample using basic information (ip, timestamp) only.
Other PEBS information will be added in later patches.
Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
tools/perf/util/intel-pt.c | 52 ++++++++++++++++++++++++++++++++++++--
1 file changed, 50 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 1f5520f964ab..4517c02fa478 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1443,9 +1443,57 @@ 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)
+static int intel_pt_synth_pebs_sample(struct intel_pt_queue *ptq)
{
- return 0;
+ const struct intel_pt_blk_items *items = &ptq->state->items;
+ struct perf_sample sample = { .ip = 0, };
+ union perf_event *event = ptq->event_buf;
+ struct intel_pt *pt = ptq->pt;
+ struct perf_evsel *evsel = pt->pebs_evsel;
+ u64 sample_type = evsel->attr.sample_type;
+ u64 id = evsel->id[0];
+ u8 cpumode;
+
+ if (intel_pt_skip_event(pt))
+ return 0;
+
+ intel_pt_prep_a_sample(ptq, event, &sample);
+
+ sample.id = id;
+ sample.stream_id = id;
+
+ if (!evsel->attr.freq)
+ sample.period = evsel->attr.sample_period;
+
+ /* No support for non-zero CS base */
+ if (items->has_ip)
+ sample.ip = items->ip;
+ else if (items->has_rip)
+ sample.ip = items->rip;
+ else
+ sample.ip = ptq->state->from_ip;
+
+ /* No support for guest mode at this time */
+ cpumode = sample.ip < ptq->pt->kernel_start ?
+ PERF_RECORD_MISC_USER :
+ PERF_RECORD_MISC_KERNEL;
+
+ event->sample.header.misc = cpumode | PERF_RECORD_MISC_EXACT_IP;
+
+ sample.cpumode = cpumode;
+
+ if (sample_type & PERF_SAMPLE_TIME) {
+ u64 timestamp = 0;
+
+ if (items->has_timestamp)
+ timestamp = items->timestamp;
+ else if (!pt->timeless_decoding)
+ timestamp = ptq->timestamp;
+ if (timestamp)
+ sample.time = tsc_to_perf_time(timestamp, &pt->tc);
+ }
+
+ return intel_pt_deliver_synth_event(pt, ptq, event, &sample,
sample_type);
}
static int intel_pt_synth_error(struct intel_pt *pt, int code, int cpu,
--
2.17.1
