diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2018-10-31 12:10:42 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-10-31 18:54:27 +0300 |
| commit | 242483068b4b9ad02f1653819b6e683577681e0e (patch) | |
| tree | 97d9861d0d6134375a0d80ac7cccdbcbe6da4455 /tools/perf/util/intel-pt.c | |
| parent | 4f8f382e635707ddaddf8269a116e4f8cc8835c0 (diff) | |
| download | linux-242483068b4b9ad02f1653819b6e683577681e0e.tar.xz | |
perf intel-pt: Insert callchain context into synthesized callchains
In the absence of a fallback, callchains must encode also the callchain
context. Do that now there is no fallback.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: stable@vger.kernel.org # 4.19
Link: http://lkml.kernel.org/r/100ea2ec-ed14-b56d-d810-e0a6d2f4b069@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 | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index ffa385a029b3..60732213d16a 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -759,7 +759,8 @@ static struct intel_pt_queue *intel_pt_alloc_queue(struct intel_pt *pt, if (pt->synth_opts.callchain) { size_t sz = sizeof(struct ip_callchain); - sz += pt->synth_opts.callchain_sz * sizeof(u64); + /* Add 1 to callchain_sz for callchain context */ + sz += (pt->synth_opts.callchain_sz + 1) * sizeof(u64); ptq->chain = zalloc(sz); if (!ptq->chain) goto out_free; @@ -1160,7 +1161,8 @@ static void intel_pt_prep_sample(struct intel_pt *pt, if (pt->synth_opts.callchain) { thread_stack__sample(ptq->thread, ptq->chain, - pt->synth_opts.callchain_sz, sample->ip); + pt->synth_opts.callchain_sz + 1, + sample->ip, pt->kernel_start); sample->callchain = ptq->chain; } |