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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Create and destroy DSQs in a loop.
*
* 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";
void BPF_STRUCT_OPS(create_dsq_exit_task, struct task_struct *p,
struct scx_exit_task_args *args)
{
scx_bpf_destroy_dsq(p->pid);
}
s32 BPF_STRUCT_OPS_SLEEPABLE(create_dsq_init_task, struct task_struct *p,
struct scx_init_task_args *args)
{
s32 err;
err = scx_bpf_create_dsq(p->pid, -1);
if (err)
scx_bpf_error("Failed to create DSQ for %s[%d]",
p->comm, p->pid);
return err;
}
s32 BPF_STRUCT_OPS_SLEEPABLE(create_dsq_init)
{
u32 i;
s32 err;
bpf_for(i, 0, 1024) {
err = scx_bpf_create_dsq(i, -1);
if (err) {
scx_bpf_error("Failed to create DSQ %d", i);
return 0;
}
}
bpf_for(i, 0, 1024) {
scx_bpf_destroy_dsq(i);
}
return 0;
}
SEC(".struct_ops.link")
struct sched_ext_ops create_dsq_ops = {
.init_task = (void *) create_dsq_init_task,
.exit_task = (void *) create_dsq_exit_task,
.init = (void *) create_dsq_init,
.name = "create_dsq",
};
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