perf intel-pt: Add callchain to synthesized PEBS sample (e01f0ef5) · Commits · 戴 / test

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:

tools/perf/util/intel-pt.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -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)];