Commit-ID: 03997612904866abe7cdcc992784ef65cb3a4b81 Gitweb: https://git.kernel.org/tip/03997612904866abe7cdcc992784ef65cb3a4b81 Author: Adrian Hunter <[email protected]> AuthorDate: Wed, 6 Feb 2019 12:39:45 +0200 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Wed, 6 Feb 2019 10:27:27 -0300
perf intel-pt: Fix CYC timestamp calculation after OVF CYC packet timestamp calculation depends upon CBR which was being cleared upon overflow (OVF). That can cause errors due to failing to synchronize with sideband events. Even if a CBR change has been lost, the old CBR is still a better estimate than zero. So remove the clearing of CBR. Signed-off-by: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 1 - 1 file changed, 1 deletion(-) 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 ecd25cdc1d3e..a54d6c9a4601 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -1395,7 +1395,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder) { intel_pt_log("ERROR: Buffer overflow\n"); intel_pt_clear_tx_flags(decoder); - decoder->cbr = 0; decoder->timestamp_insn_cnt = 0; decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; decoder->overflow = true;
