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
7 struct bpf_stack_build_id stack_sleepable[128];
8 int res_sleepable;
9
10 struct bpf_stack_build_id stack_nofault[128];
11 int res_nofault;
12
13 SEC("uprobe.multi/./uprobe_multi:uprobe")
14 int 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
22 SEC("uprobe.multi.s/./uprobe_multi:uprobe")
23 int 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
31 char _license[] SEC("license") = "GPL";
32
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