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 <[email protected]> --- tools/perf/util/evlist.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 2a9de6491700..173b4f0e0e6e 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -380,22 +380,33 @@ void evlist__disable(struct evlist *evlist) { struct evsel *pos; struct affinity affinity; - int cpu, i; + int cpu, i, imm = 0; + bool has_imm = false; if (affinity__setup(&affinity) < 0) return; - evlist__for_each_cpu(evlist, i, cpu) { - affinity__set(&affinity, cpu); - - evlist__for_each_entry(evlist, pos) { - if (evsel__cpu_iter_skip(pos, cpu)) - continue; - if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd) - continue; - evsel__disable_cpu(pos, pos->cpu_iter - 1); + /* Disable 'immediate' events last */ + for (imm = 0; imm <= 1; imm++) { + evlist__for_each_cpu(evlist, i, cpu) { + affinity__set(&affinity, cpu); + + evlist__for_each_entry(evlist, pos) { + if (evsel__cpu_iter_skip(pos, cpu)) + continue; + if (pos->disabled || !evsel__is_group_leader(pos) || !pos->core.fd) + continue; + if (pos->immediate) + has_imm = true; + if (pos->immediate != imm) + continue; + evsel__disable_cpu(pos, pos->cpu_iter - 1); + } } + if (!has_imm) + break; } + affinity__cleanup(&affinity); evlist__for_each_entry(evlist, pos) { if (!evsel__is_group_leader(pos) || !pos->core.fd) -- 2.17.1
