From: Arnaldo Carvalho de Melo Date: Sun, 13 Dec 2009 21:50:26 +0000 (-0200) Subject: perf session: Register the idle thread in perf_session__process_events X-Git-Tag: firefly_0821_release~9833^2~3628^2~49 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=13df45ca1c9a430d5f53862854070fcc324e015c;p=firefly-linux-kernel-4.4.55.git perf session: Register the idle thread in perf_session__process_events No need for all tools to register it and then immediately call perf_session__process_events. Signed-off-by: Arnaldo Carvalho de Melo Cc: Frédéric Weisbecker Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Paul Mackerras LKML-Reference: <1260741029-4430-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar --- diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 43e3bb354442..93d765a746f2 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -464,14 +464,11 @@ static int __cmd_annotate(void) { struct perf_session *session = perf_session__new(input_name, O_RDONLY, force); - struct thread *idle; int ret; if (session == NULL) return -ENOMEM; - idle = register_idle_thread(); - ret = perf_session__process_events(session, &event_ops, 0, &event__cwdlen, &event__cwd); if (ret) diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 6f74bd8d20e6..37a849906afe 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -372,7 +372,6 @@ static int read_events(void) if (session == NULL) return -ENOMEM; - register_idle_thread(); err = perf_session__process_events(session, &event_ops, 0, &event__cwdlen, &event__cwd); perf_session__delete(session); diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index c203eaf73a2f..4b37ac4f128b 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -761,7 +761,6 @@ static struct perf_event_ops event_ops = { static int __cmd_report(void) { - struct thread *idle; int ret; struct perf_session *session; @@ -769,9 +768,6 @@ static int __cmd_report(void) if (session == NULL) return -ENOMEM; - idle = register_idle_thread(); - thread__comm_adjust(idle); - if (show_threads) perf_read_values_init(&show_threads_values); diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index b5b447236261..847ed51248b1 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1670,8 +1670,6 @@ static int read_events(void) if (session == NULL) return -ENOMEM; - register_idle_thread(); - err = perf_session__process_events(session, &event_ops, 0, &event__cwdlen, &event__cwd); perf_session__delete(session); diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c404dece950d..40cb896581dd 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -125,7 +125,6 @@ static struct perf_event_ops event_ops = { static int __cmd_trace(struct perf_session *session) { - register_idle_thread(); return perf_session__process_events(session, &event_ops, 0, &event__cwdlen, &event__cwd); } diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c index ba5bcfa1f908..36e3bfe73196 100644 --- a/tools/perf/util/data_map.c +++ b/tools/perf/util/data_map.c @@ -1,6 +1,7 @@ #include "symbol.h" #include "util.h" #include "debug.h" +#include "thread.h" #include "session.h" static unsigned long mmap_window = 32; @@ -127,6 +128,18 @@ out: return err; } +static struct thread *perf_session__register_idle_thread(struct perf_session *self __used) +{ + struct thread *thread = threads__findnew(0); + + if (!thread || thread__set_comm(thread, "swapper")) { + pr_err("problem inserting idle task.\n"); + thread = NULL; + } + + return thread; +} + int perf_session__process_events(struct perf_session *self, struct perf_event_ops *ops, int full_paths, int *cwdlen, char **cwd) @@ -140,6 +153,9 @@ int perf_session__process_events(struct perf_session *self, uint32_t size; char *buf; + if (perf_session__register_idle_thread(self) == NULL) + return -ENOMEM; + perf_event_ops__fill_defaults(ops); page_size = getpagesize(); diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index b68a00ea4121..5c0ab14f3dba 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -161,18 +161,6 @@ struct thread *threads__findnew(pid_t pid) return th; } -struct thread *register_idle_thread(void) -{ - struct thread *thread = threads__findnew(0); - - if (!thread || thread__set_comm(thread, "swapper")) { - fprintf(stderr, "problem inserting idle task.\n"); - exit(-1); - } - - return thread; -} - static void map_groups__remove_overlappings(struct map_groups *self, struct map *map) { diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index 1751802a09ba..2e35e1f6bb43 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -24,7 +24,6 @@ void map_groups__init(struct map_groups *self); int thread__set_comm(struct thread *self, const char *comm); int thread__comm_len(struct thread *self); struct thread *threads__findnew(pid_t pid); -struct thread *register_idle_thread(void); void thread__insert_map(struct thread *self, struct map *map); int thread__fork(struct thread *self, struct thread *parent); size_t map_groups__fprintf_maps(struct map_groups *self, FILE *fp);