It treats the idle_max_cpu little bit confusingly IMHO. Let's make it more straight forward.
Signed-off-by: Namhyung Kim <namhy...@kernel.org> --- tools/perf/builtin-sched.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 5f69c9b9c78f..26efa99567b8 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -2005,7 +2005,7 @@ static int init_idle_threads(int ncpu) if (!idle_threads) return -ENOMEM; - idle_max_cpu = ncpu - 1; + idle_max_cpu = ncpu; /* allocate the actual thread struct if needed */ for (i = 0; i < ncpu; ++i) { @@ -2026,7 +2026,7 @@ static void free_idle_threads(void) if (idle_threads == NULL) return; - for (i = 0; i <= idle_max_cpu; ++i) { + for (i = 0; i < idle_max_cpu; ++i) { if ((idle_threads[i])) thread__delete(idle_threads[i]); } @@ -2049,8 +2049,7 @@ static struct thread *get_idle_thread(int cpu) return NULL; idle_threads = (struct thread **) p; - i = idle_max_cpu ? idle_max_cpu + 1 : 0; - for (; i < j; ++i) + for (i = idle_max_cpu; i < j; ++i) idle_threads[i] = NULL; idle_max_cpu = j; @@ -2492,7 +2491,7 @@ static void timehist_print_summary(struct perf_sched *sched, return; printf("\nIdle stats:\n"); - for (i = 0; i <= idle_max_cpu; ++i) { + for (i = 0; i < idle_max_cpu; ++i) { t = idle_threads[i]; if (!t) continue; -- 2.10.1