diff options
| -rw-r--r-- | tools/perf/builtin-sched.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 966eddce1609..e108b0f6a246 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -230,6 +230,15 @@ struct evsel_runtime { u32 ncpu; /* highest cpu slot allocated */ }; +/* per cpu idle time data */ +struct idle_thread_runtime { + struct thread_runtime tr; + struct thread *last_thread; + struct rb_root sorted_root; + struct callchain_root callchain; + struct callchain_cursor cursor; +}; + /* track idle times per cpu */ static struct thread **idle_threads; static int idle_max_cpu; @@ -1997,13 +2006,31 @@ static void save_task_callchain(struct perf_sched *sched, } } +static int init_idle_thread(struct thread *thread) +{ + struct idle_thread_runtime *itr; + + thread__set_comm(thread, idle_comm, 0); + + itr = zalloc(sizeof(*itr)); + if (itr == NULL) + return -ENOMEM; + + init_stats(&itr->tr.run_stats); + callchain_init(&itr->callchain); + callchain_cursor_reset(&itr->cursor); + thread__set_priv(thread, itr); + + return 0; +} + /* * Track idle stats per cpu by maintaining a local thread * struct for the idle task on each cpu. */ static int init_idle_threads(int ncpu) { - int i; + int i, ret; idle_threads = zalloc(ncpu * sizeof(struct thread *)); if (!idle_threads) @@ -2017,7 +2044,9 @@ static int init_idle_threads(int ncpu) if (idle_threads[i] == NULL) return -ENOMEM; - thread__set_comm(idle_threads[i], idle_comm, 0); + ret = init_idle_thread(idle_threads[i]); + if (ret < 0) + return ret; } return 0; @@ -2064,8 +2093,8 @@ static struct thread *get_idle_thread(int cpu) idle_threads[cpu] = thread__new(0, 0); if (idle_threads[cpu]) { - idle_threads[cpu]->tid = 0; - thread__set_comm(idle_threads[cpu], idle_comm, 0); + if (init_idle_thread(idle_threads[cpu]) < 0) + return NULL; } } |