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| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-06-10 10:28:03 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-06-17 15:57:18 -0300 |
| commit | e01f0ef509ea7e76929f24a074d241de52c6f82a (patch) | |
| tree | 040e81ea83363ed3b91b54b04a6447a9b37a5c06 /tools/perf/util/intel-pt.c | |
| parent | 975846eddf907297aa036544545cd839c7c7dd31 (diff) | |
| download | lwn-e01f0ef509ea7e76929f24a074d241de52c6f82a.tar.gz lwn-e01f0ef509ea7e76929f24a074d241de52c6f82a.zip | |
perf intel-pt: Add callchain to synthesized PEBS sample
Like other synthesized events, if there is also an Intel PT branch
trace, then a call stack can also be synthesized. Add that.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190610072803.10456-12-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/intel-pt.c')
| -rw-r--r-- | tools/perf/util/intel-pt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index bf7647897e8a..550db6e77968 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -1730,6 +1730,14 @@ static int intel_pt_synth_pebs_sample(struct intel_pt_queue *ptq) sample.time = tsc_to_perf_time(timestamp, &pt->tc); } + if (sample_type & PERF_SAMPLE_CALLCHAIN && + pt->synth_opts.callchain) { + thread_stack__sample(ptq->thread, ptq->cpu, ptq->chain, + pt->synth_opts.callchain_sz, sample.ip, + pt->kernel_start); + sample.callchain = ptq->chain; + } + if (sample_type & PERF_SAMPLE_REGS_INTR && items->mask[INTEL_PT_GP_REGS_POS]) { u64 regs[sizeof(sample.intr_regs.mask)]; |