diff options
author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-11-15 11:14:39 -0500 |
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committer | Ingo Molnar <mingo@elte.hu> | 2011-11-17 06:20:22 -0500 |
commit | 391e43da797a96aeb65410281891f6d0b0e9611c (patch) | |
tree | 0ce6784525a5a8f75b377170cf1a7d60abccea29 /kernel/sched_features.h | |
parent | 029632fbb7b7c9d85063cc9eb470de6c54873df3 (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.h | 70 |
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 | */ | ||
6 | SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1) | ||
7 | |||
8 | /* | ||
9 | * Place new tasks ahead so that they do not starve already running | ||
10 | * tasks | ||
11 | */ | ||
12 | SCHED_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 | */ | ||
20 | SCHED_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 | */ | ||
27 | SCHED_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 | */ | ||
34 | SCHED_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 | */ | ||
40 | SCHED_FEAT(CACHE_HOT_BUDDY, 1) | ||
41 | |||
42 | /* | ||
43 | * Use arch dependent cpu power functions | ||
44 | */ | ||
45 | SCHED_FEAT(ARCH_POWER, 0) | ||
46 | |||
47 | SCHED_FEAT(HRTICK, 0) | ||
48 | SCHED_FEAT(DOUBLE_TICK, 0) | ||
49 | SCHED_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 | */ | ||
56 | SCHED_FEAT(OWNER_SPIN, 1) | ||
57 | |||
58 | /* | ||
59 | * Decrement CPU power based on time not spent running tasks | ||
60 | */ | ||
61 | SCHED_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 | */ | ||
67 | SCHED_FEAT(TTWU_QUEUE, 1) | ||
68 | |||
69 | SCHED_FEAT(FORCE_SD_OVERLAP, 0) | ||
70 | SCHED_FEAT(RT_RUNTIME_SHARE, 1) | ||