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
53
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* A scheduler that verifies that we do proper counting of init, enable, etc
* callbacks.
*
* Copyright (c) 2023 Meta Platforms, Inc. and affiliates.
* Copyright (c) 2023 David Vernet <dvernet@meta.com>
* Copyright (c) 2023 Tejun Heo <tj@kernel.org>
*/
#include <scx/common.bpf.h>
char _license[] SEC("license") = "GPL";
u64 init_task_cnt, exit_task_cnt, enable_cnt, disable_cnt;
u64 init_fork_cnt, init_transition_cnt;
s32 BPF_STRUCT_OPS_SLEEPABLE(cnt_init_task, struct task_struct *p,
struct scx_init_task_args *args)
{
__sync_fetch_and_add(&init_task_cnt, 1);
if (args->fork)
__sync_fetch_and_add(&init_fork_cnt, 1);
else
__sync_fetch_and_add(&init_transition_cnt, 1);
return 0;
}
void BPF_STRUCT_OPS(cnt_exit_task, struct task_struct *p)
{
__sync_fetch_and_add(&exit_task_cnt, 1);
}
void BPF_STRUCT_OPS(cnt_enable, struct task_struct *p)
{
__sync_fetch_and_add(&enable_cnt, 1);
}
void BPF_STRUCT_OPS(cnt_disable, struct task_struct *p)
{
__sync_fetch_and_add(&disable_cnt, 1);
}
SEC(".struct_ops.link")
struct sched_ext_ops init_enable_count_ops = {
.init_task = (void *) cnt_init_task,
.exit_task = (void *) cnt_exit_task,
.enable = (void *) cnt_enable,
.disable = (void *) cnt_disable,
.name = "init_enable_count",
};
|
