Commit-ID: 156a2b022907687f28c72d1ba601015f295cd99e
Gitweb: http://git.kernel.org/tip/156a2b022907687f28c72d1ba601015f295cd99e
Author: Adrian Hunter <[email protected]>
AuthorDate: Tue, 22 Oct 2013 10:34:16 +0300
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Wed, 23 Oct 2013 10:24:29 -0300
perf sched: Optimize build time
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 <[email protected]>
Acked-by: David Ahern <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link:
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
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 5a33856..ddb5dc1 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);
--
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