From: Adrián Herrera Arcila adrian.herrera@arm.com
[ Upstream commit bb8bc52e75785af94b9ba079277547d50d018a52 ]
This extracts common code from the branches of the forks if-then-else.
enable_counters(), which was at the beginning of both branches of the conditional, is now unconditional; evlist__start_workload() is extracted to a different if, which enables making the common clocking code unconditional.
Reviewed-by: Leo Yan leo.yan@linaro.org Signed-off-by: Adrián Herrera Arcila adrian.herrera@arm.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Ingo Molnar mingo@redhat.com Cc: James Clark james.clark@arm.com Cc: Jiri Olsa jolsa@kernel.org Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Song Liu songliubraving@fb.com Link: https://lore.kernel.org/r/20220729161244.10522-1-adrian.herrera@arm.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Stable-dep-of: c587e77e100f ("perf stat: Do not delay the workload with --delay") Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/builtin-stat.c | 25 +++++++++---------------- 1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index abf88a1ad455..2602c750779d 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -953,18 +953,18 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx) return err; }
- /* - * Enable counters and exec the command: - */ - if (forks) { - err = enable_counters(); - if (err) - return -1; + err = enable_counters(); + if (err) + return -1; + + /* Exec the command, if any */ + if (forks) evlist__start_workload(evsel_list);
- t0 = rdclock(); - clock_gettime(CLOCK_MONOTONIC, &ref_time); + t0 = rdclock(); + clock_gettime(CLOCK_MONOTONIC, &ref_time);
+ if (forks) { if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) status = dispatch_events(forks, timeout, interval, ×); if (child_pid != -1) { @@ -982,13 +982,6 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx) if (WIFSIGNALED(status)) psignal(WTERMSIG(status), argv[0]); } else { - err = enable_counters(); - if (err) - return -1; - - t0 = rdclock(); - clock_gettime(CLOCK_MONOTONIC, &ref_time); - status = dispatch_events(forks, timeout, interval, ×); }