diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-04-30 10:03:06 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-12 12:43:11 -0300 |
| commit | 5ac35d778a40c9f244a38920247ad41a44c66a02 (patch) | |
| tree | ce82f0da7c76faa0f815d8eba7e2121098dc8640 /tools/perf/util/intel-pt-decoder | |
| parent | 0fc9d338944254561289e8639ac05ebf72b4b082 (diff) | |
perf intel-pt: Pass the first timestamp to the decoder
VM Time Correlation will use time ranges to determine whether a TSC packet
belongs to the Host or Guest. To start, the first non-zero timestamp is
needed. Pass that to the decoder.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20210430070309.17624-10-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/intel-pt-decoder')
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 8 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.h | 4 |
2 files changed, 12 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 c12e4a39b790..7c93ae2bd56c 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -140,6 +140,7 @@ struct intel_pt_decoder { uint64_t ctc_delta; uint64_t cycle_cnt; uint64_t cyc_ref_timestamp; + uint64_t first_timestamp; uint32_t last_mtc; uint32_t tsc_ctc_ratio_n; uint32_t tsc_ctc_ratio_d; @@ -265,6 +266,7 @@ struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params) decoder->branch_enable = params->branch_enable; decoder->hop = params->quick >= 1; decoder->leap = params->quick >= 2; + decoder->first_timestamp = params->first_timestamp; decoder->flags = params->flags; @@ -314,6 +316,12 @@ struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params) return decoder; } +void intel_pt_set_first_timestamp(struct intel_pt_decoder *decoder, + uint64_t first_timestamp) +{ + decoder->first_timestamp = first_timestamp; +} + static void intel_pt_pop_blk(struct intel_pt_stack *stack) { struct intel_pt_blk *blk = stack->blk; 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 e6e782da45a4..4d78a8c35e2a 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h @@ -258,6 +258,7 @@ struct intel_pt_params { void *data; bool return_compression; bool branch_enable; + uint64_t first_timestamp; uint64_t ctl; uint64_t period; enum intel_pt_period_type period_type; @@ -285,4 +286,7 @@ unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a, int intel_pt__strerror(int code, char *buf, size_t buflen); +void intel_pt_set_first_timestamp(struct intel_pt_decoder *decoder, + uint64_t first_timestamp); + #endif |