lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sched: do not keep current in the tree and get rid of sched_entity::fair_key

Browse Source 
Get rid of 'sched_entity::fair_key'.

As a side effect, 'current' is not kept withing the tree for 
SCHED_NORMAL/BATCH tasks anymore. This simplifies some parts of code 
(e.g. entity_tick() and yield_task_fair()) and also somewhat optimizes 
them (e.g. a single update_curr() now vs. dequeue/enqueue() before in 
entity_tick()).

Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Dmitry Adamushko
2007-10-15 17:00:07 +02:00
committed by Ingo Molnar
parent 7074badbcb
commit 30cfdcfc5f
4 changed files with 36 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/sched.c
View File

@ -6610,7 +6610,6 @@ void normalize_rt_tasks(void)
read_lock_irq(&tasklist_lock);
do_each_thread(g, p) {
p->se.fair_key = 0;
p->se.exec_start = 0;
#ifdef CONFIG_SCHEDSTATS
p->se.wait_start = 0;