1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
 3
 4#include "vmlinux.h"
 5#include <bpf/bpf_helpers.h>
 6
 7struct bpf_stack_build_id stack_sleepable[128];
 8int res_sleepable;
 9
10struct bpf_stack_build_id stack_nofault[128];
11int res_nofault;
12
13SEC("uprobe.multi/./uprobe_multi:uprobe")
14int uprobe_nofault(struct pt_regs *ctx)
15{
16	res_nofault = bpf_get_stack(ctx, stack_nofault, sizeof(stack_nofault),
17				    BPF_F_USER_STACK | BPF_F_USER_BUILD_ID);
18
19	return 0;
20}
21
22SEC("uprobe.multi.s/./uprobe_multi:uprobe")
23int uprobe_sleepable(struct pt_regs *ctx)
24{
25	res_sleepable = bpf_get_stack(ctx, stack_sleepable, sizeof(stack_sleepable),
26				      BPF_F_USER_STACK | BPF_F_USER_BUILD_ID);
27
28	return 0;
29}
30
31char _license[] SEC("license") = "GPL";