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perf intel-pt: Insert callchain context into synthesized callchains

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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>
This commit is contained in:
Adrian Hunter
2018-10-31 11:10:42 +02:00
committed by Arnaldo Carvalho de Melo
parent 4f8f382e63
commit 242483068b
3 changed files with 41 additions and 13 deletions
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6
tools/perf/util/intel-pt.c
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@@ -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;
}