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