forked from luck/tmp_suning_uos_patched
perf evlist: Disable 'immediate' events last
Events marked as 'immediate' are started before other events to ensure that there is context at the start of the main tracing events. The same is true at the end of tracing, so disable 'immediate' events after other events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -380,22 +380,33 @@ void evlist__disable(struct evlist *evlist)
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{
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struct evsel *pos;
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struct affinity affinity;
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int cpu, i;
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int cpu, i, imm = 0;
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bool has_imm = false;
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if (affinity__setup(&affinity) < 0)
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return;
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evlist__for_each_cpu(evlist, i, cpu) {
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affinity__set(&affinity, cpu);
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/* Disable 'immediate' events last */
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for (imm = 0; imm <= 1; imm++) {
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evlist__for_each_cpu(evlist, i, cpu) {
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affinity__set(&affinity, cpu);
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evlist__for_each_entry(evlist, pos) {
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if (evsel__cpu_iter_skip(pos, cpu))
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continue;
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if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd)
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continue;
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evsel__disable_cpu(pos, pos->cpu_iter - 1);
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evlist__for_each_entry(evlist, pos) {
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if (evsel__cpu_iter_skip(pos, cpu))
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continue;
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if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd)
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continue;
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if (pos->immediate)
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has_imm = true;
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if (pos->immediate != imm)
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continue;
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evsel__disable_cpu(pos, pos->cpu_iter - 1);
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}
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}
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if (!has_imm)
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break;
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}
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affinity__cleanup(&affinity);
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evlist__for_each_entry(evlist, pos) {
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if (!evsel__is_group_leader(pos) || !pos->core.fd)
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