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Commit 94c18227 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

[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: default avatarIngo Molnar <mingo@elte.hu>
parent 6cfb0d5d

include/linux/sched.h

+13 −8
Original line number Diff line number Diff line
@@ -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: */