From 94c18227d1e3f02de5b345bd3cd5c960214dc9c8 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 2 Aug 2007 17:41:40 +0200
Subject: [PATCH] [PATCH] sched: reduce task_struct size
more task_struct size reduction, by moving the debugging/instrumentation
fields to under CONFIG_SCHEDSTATS:
(i386, nodebug):
size
----
pre-CFS 1328
CFS 1472
CFS+patch 1376
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
include/linux/sched.h | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c9e0c2a6a950..17249fae5014 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -904,23 +904,28 @@ struct sched_entity {
struct rb_node run_node;
unsigned int on_rq;
+ u64 exec_start;
+ u64 sum_exec_runtime;
u64 wait_start_fair;
+ u64 sleep_start_fair;
+
+#ifdef CONFIG_SCHEDSTATS
u64 wait_start;
- u64 exec_start;
+ u64 wait_max;
+ s64 sum_wait_runtime;
+
u64 sleep_start;
- u64 sleep_start_fair;
- u64 block_start;
u64 sleep_max;
+ s64 sum_sleep_runtime;
+
+ u64 block_start;
u64 block_max;
u64 exec_max;
- u64 wait_max;
- u64 last_ran;
- u64 sum_exec_runtime;
- s64 sum_wait_runtime;
- s64 sum_sleep_runtime;
unsigned long wait_runtime_overruns;
unsigned long wait_runtime_underruns;
+#endif
+
#ifdef CONFIG_FAIR_GROUP_SCHED
struct sched_entity *parent;
/* rq on which this entity is (to be) queued: */
--
2.20.1