Root/
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 | * Should wakeups try to preempt running tasks. |
16 | */ |
17 | SCHED_FEAT(WAKEUP_PREEMPT, 1) |
18 | |
19 | /* |
20 | * Based on load and program behaviour, see if it makes sense to place |
21 | * a newly woken task on the same cpu as the task that woke it -- |
22 | * improve cache locality. Typically used with SYNC wakeups as |
23 | * generated by pipes and the like, see also SYNC_WAKEUPS. |
24 | */ |
25 | SCHED_FEAT(AFFINE_WAKEUPS, 1) |
26 | |
27 | /* |
28 | * Prefer to schedule the task we woke last (assuming it failed |
29 | * wakeup-preemption), since its likely going to consume data we |
30 | * touched, increases cache locality. |
31 | */ |
32 | SCHED_FEAT(NEXT_BUDDY, 0) |
33 | |
34 | /* |
35 | * Prefer to schedule the task that ran last (when we did |
36 | * wake-preempt) as that likely will touch the same data, increases |
37 | * cache locality. |
38 | */ |
39 | SCHED_FEAT(LAST_BUDDY, 1) |
40 | |
41 | /* |
42 | * Consider buddies to be cache hot, decreases the likelyness of a |
43 | * cache buddy being migrated away, increases cache locality. |
44 | */ |
45 | SCHED_FEAT(CACHE_HOT_BUDDY, 1) |
46 | |
47 | /* |
48 | * Use arch dependent cpu power functions |
49 | */ |
50 | SCHED_FEAT(ARCH_POWER, 0) |
51 | |
52 | SCHED_FEAT(HRTICK, 0) |
53 | SCHED_FEAT(DOUBLE_TICK, 0) |
54 | SCHED_FEAT(LB_BIAS, 1) |
55 | SCHED_FEAT(LB_SHARES_UPDATE, 1) |
56 | SCHED_FEAT(ASYM_EFF_LOAD, 1) |
57 | |
58 | /* |
59 | * Spin-wait on mutex acquisition when the mutex owner is running on |
60 | * another cpu -- assumes that when the owner is running, it will soon |
61 | * release the lock. Decreases scheduling overhead. |
62 | */ |
63 | SCHED_FEAT(OWNER_SPIN, 1) |
64 |
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javiroman/ks7010
jz-2.6.34
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9