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authorAdrian Hunter <adrian.hunter@intel.com>2018-11-05 09:35:05 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-11-05 14:53:54 -0300
commitf6c23e3b55cb93f32a724f41af8d38888bc2ab6b (patch)
tree2f719879a904351a0494e78b0d81c78fb7310ca0 /tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
parentperf intel-pt: Add more event information to debug log (diff)
downloadlinux-dev-f6c23e3b55cb93f32a724f41af8d38888bc2ab6b.tar.xz
linux-dev-f6c23e3b55cb93f32a724f41af8d38888bc2ab6b.zip
perf intel-pt: Add MTC and CYC timestamps to debug log
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>
Diffstat (limited to '')
-rw-r--r--tools/perf/util/intel-pt-decoder/intel-pt-decoder.c4
1 files changed, 4 insertions, 0 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 58f6a9ceb590..4503f3ca45ab 100644
--- 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. */