diff options
Diffstat (limited to 'kernel/sched_features.h')
-rw-r--r-- | kernel/sched_features.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/kernel/sched_features.h b/kernel/sched_features.h index d5059fd761d9..83c66e8ad3ee 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h | |||
@@ -1,11 +1,4 @@ | |||
1 | /* | 1 | /* |
2 | * Disregards a certain amount of sleep time (sched_latency_ns) and | ||
3 | * considers the task to be running during that period. This gives it | ||
4 | * a service deficit on wakeup, allowing it to run sooner. | ||
5 | */ | ||
6 | SCHED_FEAT(FAIR_SLEEPERS, 1) | ||
7 | |||
8 | /* | ||
9 | * Only give sleepers 50% of their service deficit. This allows | 2 | * Only give sleepers 50% of their service deficit. This allows |
10 | * them to run sooner, but does not allow tons of sleepers to | 3 | * them to run sooner, but does not allow tons of sleepers to |
11 | * rip the spread apart. | 4 | * rip the spread apart. |
@@ -13,13 +6,6 @@ SCHED_FEAT(FAIR_SLEEPERS, 1) | |||
13 | SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1) | 6 | SCHED_FEAT(GENTLE_FAIR_SLEEPERS, 1) |
14 | 7 | ||
15 | /* | 8 | /* |
16 | * By not normalizing the sleep time, heavy tasks get an effective | ||
17 | * longer period, and lighter task an effective shorter period they | ||
18 | * are considered running. | ||
19 | */ | ||
20 | SCHED_FEAT(NORMALIZED_SLEEPER, 0) | ||
21 | |||
22 | /* | ||
23 | * Place new tasks ahead so that they do not starve already running | 9 | * Place new tasks ahead so that they do not starve already running |
24 | * tasks | 10 | * tasks |
25 | */ | 11 | */ |
@@ -31,37 +17,6 @@ SCHED_FEAT(START_DEBIT, 1) | |||
31 | SCHED_FEAT(WAKEUP_PREEMPT, 1) | 17 | SCHED_FEAT(WAKEUP_PREEMPT, 1) |
32 | 18 | ||
33 | /* | 19 | /* |
34 | * Compute wakeup_gran based on task behaviour, clipped to | ||
35 | * [0, sched_wakeup_gran_ns] | ||
36 | */ | ||
37 | SCHED_FEAT(ADAPTIVE_GRAN, 1) | ||
38 | |||
39 | /* | ||
40 | * When converting the wakeup granularity to virtual time, do it such | ||
41 | * that heavier tasks preempting a lighter task have an edge. | ||
42 | */ | ||
43 | SCHED_FEAT(ASYM_GRAN, 1) | ||
44 | |||
45 | /* | ||
46 | * Always wakeup-preempt SYNC wakeups, see SYNC_WAKEUPS. | ||
47 | */ | ||
48 | SCHED_FEAT(WAKEUP_SYNC, 0) | ||
49 | |||
50 | /* | ||
51 | * Wakeup preempt based on task behaviour. Tasks that do not overlap | ||
52 | * don't get preempted. | ||
53 | */ | ||
54 | SCHED_FEAT(WAKEUP_OVERLAP, 0) | ||
55 | |||
56 | /* | ||
57 | * Use the SYNC wakeup hint, pipes and the likes use this to indicate | ||
58 | * the remote end is likely to consume the data we just wrote, and | ||
59 | * therefore has cache benefit from being placed on the same cpu, see | ||
60 | * also AFFINE_WAKEUPS. | ||
61 | */ | ||
62 | SCHED_FEAT(SYNC_WAKEUPS, 1) | ||
63 | |||
64 | /* | ||
65 | * Based on load and program behaviour, see if it makes sense to place | 20 | * Based on load and program behaviour, see if it makes sense to place |
66 | * a newly woken task on the same cpu as the task that woke it -- | 21 | * a newly woken task on the same cpu as the task that woke it -- |
67 | * improve cache locality. Typically used with SYNC wakeups as | 22 | * improve cache locality. Typically used with SYNC wakeups as |
@@ -70,16 +25,6 @@ SCHED_FEAT(SYNC_WAKEUPS, 1) | |||
70 | SCHED_FEAT(AFFINE_WAKEUPS, 1) | 25 | SCHED_FEAT(AFFINE_WAKEUPS, 1) |
71 | 26 | ||
72 | /* | 27 | /* |
73 | * Weaken SYNC hint based on overlap | ||
74 | */ | ||
75 | SCHED_FEAT(SYNC_LESS, 1) | ||
76 | |||
77 | /* | ||
78 | * Add SYNC hint based on overlap | ||
79 | */ | ||
80 | SCHED_FEAT(SYNC_MORE, 0) | ||
81 | |||
82 | /* | ||
83 | * Prefer to schedule the task we woke last (assuming it failed | 28 | * Prefer to schedule the task we woke last (assuming it failed |
84 | * wakeup-preemption), since its likely going to consume data we | 29 | * wakeup-preemption), since its likely going to consume data we |
85 | * touched, increases cache locality. | 30 | * touched, increases cache locality. |