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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-11-15 11:14:39 -0500
committerIngo Molnar <mingo@elte.hu>2011-11-17 06:20:22 -0500
commit391e43da797a96aeb65410281891f6d0b0e9611c (patch)
tree0ce6784525a5a8f75b377170cf1a7d60abccea29 /kernel/sched_features.h
parent029632fbb7b7c9d85063cc9eb470de6c54873df3 (diff)
sched: Move all scheduler bits into kernel/sched/
There's too many sched*.[ch] files in kernel/, give them their own directory. (No code changed, other than Makefile glue added.) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_features.h')
-rw-r--r--kernel/sched_features.h70
1 files changed, 0 insertions, 70 deletions
diff --git a/kernel/sched_features.h b/kernel/sched_features.h
deleted file mode 100644
index 84802245abd2..000000000000
--- a/kernel/sched_features.h
+++ /dev/null
@@ -1,70 +0,0 @@
1/*
2 * Only give sleepers 50% of their service deficit. This allows
3 * them to run sooner, but does not allow tons of sleepers to
4 * rip the spread apart.
5 */
6SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1)
7
8/*
9 * Place new tasks ahead so that they do not starve already running
10 * tasks
11 */
12SCHED_FEAT(START_DEBIT, 1)
13
14/*
15 * Based on load and program behaviour, see if it makes sense to place
16 * a newly woken task on the same cpu as the task that woke it --
17 * improve cache locality. Typically used with SYNC wakeups as
18 * generated by pipes and the like, see also SYNC_WAKEUPS.
19 */
20SCHED_FEAT(AFFINE_WAKEUPS, 1)
21
22/*
23 * Prefer to schedule the task we woke last (assuming it failed
24 * wakeup-preemption), since its likely going to consume data we
25 * touched, increases cache locality.
26 */
27SCHED_FEAT(NEXT_BUDDY, 0)
28
29/*
30 * Prefer to schedule the task that ran last (when we did
31 * wake-preempt) as that likely will touch the same data, increases
32 * cache locality.
33 */
34SCHED_FEAT(LAST_BUDDY, 1)
35
36/*
37 * Consider buddies to be cache hot, decreases the likelyness of a
38 * cache buddy being migrated away, increases cache locality.
39 */
40SCHED_FEAT(CACHE_HOT_BUDDY, 1)
41
42/*
43 * Use arch dependent cpu power functions
44 */
45SCHED_FEAT(ARCH_POWER, 0)
46
47SCHED_FEAT(HRTICK, 0)
48SCHED_FEAT(DOUBLE_TICK, 0)
49SCHED_FEAT(LB_BIAS, 1)
50
51/*
52 * Spin-wait on mutex acquisition when the mutex owner is running on
53 * another cpu -- assumes that when the owner is running, it will soon
54 * release the lock. Decreases scheduling overhead.
55 */
56SCHED_FEAT(OWNER_SPIN, 1)
57
58/*
59 * Decrement CPU power based on time not spent running tasks
60 */
61SCHED_FEAT(NONTASK_POWER, 1)
62
63/*
64 * Queue remote wakeups on the target CPU and process them
65 * using the scheduler IPI. Reduces rq->lock contention/bounces.
66 */
67SCHED_FEAT(TTWU_QUEUE, 1)
68
69SCHED_FEAT(FORCE_SD_OVERLAP, 0)
70SCHED_FEAT(RT_RUNTIME_SHARE, 1)