perf intel-pt: Add MTC and CYC timestamps to debug log

ahunter6 · acmel · commit f6c23e3b55cb · 2018-11-05T14:53:54.000-03:00
One cause of decoding errors is un-synchronized side-band data. Timestamps are needed to debug such cases. TSC packet timestamps are logged. Log also MTC and CYC timestamps. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20181105073505.8129-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -1474,6 +1474,8 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder)
 		decoder->have_calc_cyc_to_tsc = false;
 		intel_pt_calc_cyc_to_tsc(decoder, true);
 	}
+
+	intel_pt_log_to("Setting timestamp", decoder->timestamp);
 }
 
 static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder)
@@ -1514,6 +1516,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder)
 		decoder->timestamp = timestamp;
 
 	decoder->timestamp_insn_cnt = 0;
+
+	intel_pt_log_to("Setting timestamp", decoder->timestamp);
 }
 
 /* Walk PSB+ packets when already in sync. */

Original file line number	Diff line number	Diff line change
`@@ -1474,6 +1474,8 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder)`
`1474`	`1474`	`decoder->have_calc_cyc_to_tsc = false;`
`1475`	`1475`	`intel_pt_calc_cyc_to_tsc(decoder, true);`
`1476`	`1476`	`}`
	`1477`	`+`
	`1478`	`+ intel_pt_log_to("Setting timestamp", decoder->timestamp);`
`1477`	`1479`	`}`
`1478`	`1480`
`1479`	`1481`	`static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder)`
`@@ -1514,6 +1516,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder)`
`1514`	`1516`	`decoder->timestamp = timestamp;`
`1515`	`1517`
`1516`	`1518`	`decoder->timestamp_insn_cnt = 0;`
	`1519`	`+`
	`1520`	`+ intel_pt_log_to("Setting timestamp", decoder->timestamp);`
`1517`	`1521`	`}`
`1518`	`1522`
`1519`	`1523`	`/* Walk PSB+ packets when already in sync. */`