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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
* Copyright (c) 2024 David Vernet <dvernet@meta.com>
*/
#include <scx/common.bpf.h>
char _license[] SEC("license") = "GPL";
#include "exit_test.h"
const volatile int exit_point;
UEI_DEFINE(uei);
#define EXIT_CLEANLY() scx_bpf_exit(exit_point, "%d", exit_point)
#define DSQ_ID 0
s32 BPF_STRUCT_OPS(exit_select_cpu, struct task_struct *p,
s32 prev_cpu, u64 wake_flags)
{
bool found;
if (exit_point == EXIT_SELECT_CPU)
EXIT_CLEANLY();
return scx_bpf_select_cpu_dfl(p, prev_cpu, wake_flags, &found);
}
void BPF_STRUCT_OPS(exit_enqueue, struct task_struct *p, u64 enq_flags)
{
if (exit_point == EXIT_ENQUEUE)
EXIT_CLEANLY();
scx_bpf_dispatch(p, DSQ_ID, SCX_SLICE_DFL, enq_flags);
}
void BPF_STRUCT_OPS(exit_dispatch, s32 cpu, struct task_struct *p)
{
if (exit_point == EXIT_DISPATCH)
EXIT_CLEANLY();
scx_bpf_consume(DSQ_ID);
}
void BPF_STRUCT_OPS(exit_enable, struct task_struct *p)
{
if (exit_point == EXIT_ENABLE)
EXIT_CLEANLY();
}
s32 BPF_STRUCT_OPS(exit_init_task, struct task_struct *p,
struct scx_init_task_args *args)
{
if (exit_point == EXIT_INIT_TASK)
EXIT_CLEANLY();
return 0;
}
void BPF_STRUCT_OPS(exit_exit, struct scx_exit_info *ei)
{
UEI_RECORD(uei, ei);
}
s32 BPF_STRUCT_OPS_SLEEPABLE(exit_init)
{
if (exit_point == EXIT_INIT)
EXIT_CLEANLY();
return scx_bpf_create_dsq(DSQ_ID, -1);
}
SEC(".struct_ops.link")
struct sched_ext_ops exit_ops = {
.select_cpu = (void *) exit_select_cpu,
.enqueue = (void *) exit_enqueue,
.dispatch = (void *) exit_dispatch,
.init_task = (void *) exit_init_task,
.enable = (void *) exit_enable,
.exit = (void *) exit_exit,
.init = (void *) exit_init,
.name = "exit",
.timeout_ms = 1000U,
};
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