blob: 1133d49aae50195bd4a725db41b9dca77e1b6957 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2017 ARM Limited
* Copyright (c) 2017-2018 Linaro Limited
*/
#ifndef ODP_SCHEDULE_SCALABLE_CONFIG_H_
#define ODP_SCHEDULE_SCALABLE_CONFIG_H_
/* Maximum number of events that can be stored in a queue */
#define CONFIG_SCAL_QUEUE_SIZE 4096
/*
* Default scaling factor for the scheduler group
*
* This scaling factor is used when the application creates a scheduler
* group with no worker threads.
*/
#define CONFIG_DEFAULT_XFACTOR 4
/*
* Default weight (in events) for WRR in scalable scheduler
*
* This controls the per-queue weight for WRR between queues of the same
* priority in the scalable scheduler
* A higher value improves throughput while a lower value increases fairness
* and thus likely decreases latency
*
* If WRR is undesired, set the value to ~0 which will use the largest possible
* weight
*
* Note: an API for specifying this on a per-queue basis would be useful but is
* not yet available
*/
#define CONFIG_WRR_WEIGHT 64
/*
* Split queue producer/consumer metadata into separate cache lines.
* This is beneficial on e.g. Cortex-A57 but not so much on A53.
*/
#define CONFIG_SPLIT_PRODCONS
/*
* Use locks to protect queue (ring buffer) and scheduler state updates
* On x86, this decreases overhead noticeably.
*/
#if !defined(__arm__) && !defined(__aarch64__)
#define CONFIG_QSCHST_LOCK
/* Keep all ring buffer/qschst data together when using locks */
#undef CONFIG_SPLIT_PRODCONS
#endif
#endif /* ODP_SCHEDULE_SCALABLE_CONFIG_H_ */
|
