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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162/* 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 "hotplug_test.h"
UEI_DEFINE(uei);
void BPF_STRUCT_OPS(hotplug_exit, struct scx_exit_info *ei){ UEI_RECORD(uei, ei);}
static void exit_from_hotplug(s32 cpu, bool onlining){ /* * Ignored, just used to verify that we can invoke blocking kfuncs * from the hotplug path. */ scx_bpf_create_dsq(0, -1);
s64 code = SCX_ECODE_ACT_RESTART | HOTPLUG_EXIT_RSN;
if (onlining) code |= HOTPLUG_ONLINING;
scx_bpf_exit(code, "hotplug event detected (%d going %s)", cpu, onlining ? "online" : "offline");}
void BPF_STRUCT_OPS_SLEEPABLE(hotplug_cpu_online, s32 cpu){ exit_from_hotplug(cpu, true);}
void BPF_STRUCT_OPS_SLEEPABLE(hotplug_cpu_offline, s32 cpu){ exit_from_hotplug(cpu, false);}
SEC(".struct_ops.link")struct sched_ext_ops hotplug_cb_ops = { .cpu_online = (void *) hotplug_cpu_online, .cpu_offline = (void *) hotplug_cpu_offline, .exit = (void *) hotplug_exit, .name = "hotplug_cbs", .timeout_ms = 1000U,};
SEC(".struct_ops.link")struct sched_ext_ops hotplug_nocb_ops = { .exit = (void *) hotplug_exit, .name = "hotplug_nocbs", .timeout_ms = 1000U,};