bpf/progs/trigger_bench.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 // Copyright (c) 2020 Facebook
0003
0004 #include <linux/bpf.h>
0005 #include <asm/unistd.h>
0006 #include <bpf/bpf_helpers.h>
0007 #include <bpf/bpf_tracing.h>
0008 #include "bpf_misc.h"
0009
0010 char _license[] SEC("license") = "GPL";
0011
0012 long hits = 0;
0013
0014 SEC("tp/syscalls/sys_enter_getpgid")
0015 int bench_trigger_tp(void *ctx)
0016 {
0017     __sync_add_and_fetch(&hits, 1);
0018     return 0;
0019 }
0020
0021 SEC("raw_tp/sys_enter")
0022 int BPF_PROG(bench_trigger_raw_tp, struct pt_regs *regs, long id)
0023 {
0024     if (id == __NR_getpgid)
0025         __sync_add_and_fetch(&hits, 1);
0026     return 0;
0027 }
0028
0029 SEC("kprobe/" SYS_PREFIX "sys_getpgid")
0030 int bench_trigger_kprobe(void *ctx)
0031 {
0032     __sync_add_and_fetch(&hits, 1);
0033     return 0;
0034 }
0035
0036 SEC("fentry/" SYS_PREFIX "sys_getpgid")
0037 int bench_trigger_fentry(void *ctx)
0038 {
0039     __sync_add_and_fetch(&hits, 1);
0040     return 0;
0041 }
0042
0043 SEC("fentry.s/" SYS_PREFIX "sys_getpgid")
0044 int bench_trigger_fentry_sleep(void *ctx)
0045 {
0046     __sync_add_and_fetch(&hits, 1);
0047     return 0;
0048 }
0049
0050 SEC("fmod_ret/" SYS_PREFIX "sys_getpgid")
0051 int bench_trigger_fmodret(void *ctx)
0052 {
0053     __sync_add_and_fetch(&hits, 1);
0054     return -22;
0055 }
0056
0057 SEC("uprobe")
0058 int bench_trigger_uprobe(void *ctx)
0059 {
0060     __sync_add_and_fetch(&hits, 1);
0061     return 0;
0062 }