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authorAdrian Hunter <adrian.hunter@intel.com>2019-06-10 10:27:56 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-06-17 15:57:17 -0300
commite62ca655eea7ad4956929f647c2d9fb36aeff90e (patch)
tree3f45a85eef226db7386ef5f98783ac5695f42103
parent4c35595e1ea7585d09eb80096f47af237061e795 (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.c18
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);