Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 08/16] perf sched: Optimize build time | Date | Wed, 23 Oct 2013 17:58:07 -0300 |
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From: Adrian Hunter <adrian.hunter@intel.com>
builtin-sched.c took a log time to build with -O6 optimization. This turned out to be caused by:
.curr_pid = { [0 ... MAX_CPUS - 1] = -1 },
Fix by initializing curr_pid programmatically.
This addresses the problem cured in f36f83f947ed using a smaller hammer.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: David Ahern <dsahern@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1382427258-17495-13-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/builtin-sched.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 5a338566195e..ddb5dc15be17 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1670,7 +1670,6 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) .sort_list = LIST_HEAD_INIT(sched.sort_list), .start_work_mutex = PTHREAD_MUTEX_INITIALIZER, .work_done_wait_mutex = PTHREAD_MUTEX_INITIALIZER, - .curr_pid = { [0 ... MAX_CPUS - 1] = -1 }, .sort_order = default_sort_order, .replay_repeat = 10, .profile_cpu = -1, @@ -1732,6 +1731,10 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) .switch_event = replay_switch_event, .fork_event = replay_fork_event, }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++) + sched.curr_pid[i] = -1; argc = parse_options(argc, argv, sched_options, sched_usage, PARSE_OPT_STOP_AT_NON_OPTION); -- 1.8.1.4
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