/* 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 = 1000 U,
};
SEC(".struct_ops.link" )
struct sched_ext_ops hotplug_nocb_ops = {
.exit = (void *) hotplug_exit,
.name = "hotplug_nocbs" ,
.timeout_ms = 1000 U,
};
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-12)
¤
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