| // SPDX-License-Identifier: GPL-2.0 | |
| // Copyright (c) 2019 Facebook | |
| #include <linux/sched.h> | |
| #include <linux/ptrace.h> | |
| #include <stdint.h> | |
| #include <stddef.h> | |
| #include <stdbool.h> | |
| #include <linux/bpf.h> | |
| #include "bpf_helpers.h" | |
| char _license[] SEC("license") = "GPL"; | |
| SEC("raw_tracepoint/kfree_skb") | |
| int nested_loops(volatile struct pt_regs* ctx) | |
| { | |
| int i, j, sum = 0, m; | |
| for (j = 0; j < 300; j++) | |
| for (i = 0; i < j; i++) { | |
| if (j & 1) | |
| m = PT_REGS_RC(ctx); | |
| else | |
| m = j; | |
| sum += i * m; | |
| } | |
| return sum; | |
| } |