diff options
| author |   Adrian Hunter <adrian.hunter@intel.com> | 2017-05-26 11:17:16 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-06-21 11:35:51 -0300 |
| commit | 0a7c700d23450bd4467855d5162920d5edf314b0 (patch) | |
| tree | d1f1bb03ad91d69357a73aab78233f3e388e1607 /tools/perf | |
| parent | perf intel-pt: Add reserved byte to CBR packet payload (diff) | |
| download | wireguard-linux-0a7c700d23450bd4467855d5162920d5edf314b0.tar.xz wireguard-linux-0a7c700d23450bd4467855d5162920d5edf314b0.zip | |
perf intel-pt: Add decoder support for CBR events
Add decoder support for informing the tools of changes to the core-to-bus
ratio (CBR).
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-16-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 19 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.h | 2 |
2 files changed, 21 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 96bf8d8e83c0..5dea06289db5 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -141,6 +141,7 @@ struct intel_pt_decoder { int pkt_len; int last_packet_type; unsigned int cbr; + unsigned int cbr_seen; unsigned int max_non_turbo_ratio; double max_non_turbo_ratio_fp; double cbr_cyc_to_tsc; @@ -167,6 +168,7 @@ struct intel_pt_decoder { uint64_t fup_ptw_payload; uint64_t fup_mwait_payload; uint64_t fup_pwre_payload; + uint64_t cbr_payload; uint64_t timestamp_insn_cnt; uint64_t sample_insn_cnt; uint64_t stuck_ip; @@ -1446,6 +1448,8 @@ static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder) { unsigned int cbr = decoder->packet.payload & 0xff; + decoder->cbr_payload = decoder->packet.payload; + if (decoder->cbr == cbr) return; @@ -1806,6 +1810,16 @@ next: case INTEL_PT_CBR: intel_pt_calc_cbr(decoder); + if (!decoder->branch_enable && + decoder->cbr != decoder->cbr_seen) { + decoder->cbr_seen = decoder->cbr; + decoder->state.type = INTEL_PT_CBR_CHG; + decoder->state.from_ip = decoder->ip; + decoder->state.to_ip = 0; + decoder->state.cbr_payload = + decoder->packet.payload; + return 0; + } break; case INTEL_PT_MODE_EXEC: @@ -2343,6 +2357,11 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder) decoder->sample_insn_cnt = decoder->timestamp_insn_cnt; } else { decoder->state.err = 0; + if (decoder->cbr != decoder->cbr_seen && decoder->state.type) { + decoder->cbr_seen = decoder->cbr; + decoder->state.type |= INTEL_PT_CBR_CHG; + decoder->state.cbr_payload = decoder->cbr_payload; + } if (intel_pt_sample_time(decoder->pkt_state)) { decoder->sample_timestamp = decoder->timestamp; decoder->sample_insn_cnt = decoder->timestamp_insn_cnt; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h index 414c88e9e0da..921b22e8ca0e 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h @@ -36,6 +36,7 @@ enum intel_pt_sample_type { INTEL_PT_PWR_ENTRY = 1 << 5, INTEL_PT_EX_STOP = 1 << 6, INTEL_PT_PWR_EXIT = 1 << 7, + INTEL_PT_CBR_CHG = 1 << 8, }; enum intel_pt_period_type { @@ -73,6 +74,7 @@ struct intel_pt_state { uint64_t mwait_payload; uint64_t pwre_payload; uint64_t pwrx_payload; + uint64_t cbr_payload; uint32_t flags; enum intel_pt_insn_op insn_op; int insn_len; |