From: Adrian Hunter Date: Fri, 25 Sep 2015 13:15:42 +0000 (+0300) Subject: perf report: Skip events with null branch stacks X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f86225db3aa0e394915af45eea1c3cca6f3e2dba;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git perf report: Skip events with null branch stacks A non-synthesized event might not have a branch stack if branch stacks have been synthesized (using itrace options). An example of that is when Intel PT records sched_switch events for decoding purposes. Those sched_switch events do not have branch stacks even though the Intel PT decoder may be synthesizing other events that do due to the itrace options. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1443186956-18718-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 92f7c5a75208..e94e5c7155af 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -163,14 +163,21 @@ static int process_sample_event(struct perf_tool *tool, if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap)) goto out_put; - if (sort__mode == SORT_MODE__BRANCH) + if (sort__mode == SORT_MODE__BRANCH) { + /* + * A non-synthesized event might not have a branch stack if + * branch stacks have been synthesized (using itrace options). + */ + if (!sample->branch_stack) + goto out_put; iter.ops = &hist_iter_branch; - else if (rep->mem_mode) + } else if (rep->mem_mode) { iter.ops = &hist_iter_mem; - else if (symbol_conf.cumulate_callchain) + } else if (symbol_conf.cumulate_callchain) { iter.ops = &hist_iter_cumulative; - else + } else { iter.ops = &hist_iter_normal; + } if (al.map != NULL) al.map->dso->hit = 1;