tools/testing/selftests/bpf/progs/trigger_bench.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2020 Facebook
   3
   4 #include <linux/bpf.h>
   5 #include <asm/unistd.h>
   6 #include <bpf/bpf_helpers.h>
   7 #include <bpf/bpf_tracing.h>
   8 #include "bpf_misc.h"
   9
  10 char _license[] SEC("license") = "GPL";
  11
  12 long hits = 0;
  13
  14 SEC("tp/syscalls/sys_enter_getpgid")
  15 int bench_trigger_tp(void *ctx)
  16 {
  17         __sync_add_and_fetch(&hits, 1);
  18         return 0;
  19 }
  20
  21 SEC("raw_tp/sys_enter")
  22 int BPF_PROG(bench_trigger_raw_tp, struct pt_regs *regs, long id)
  23 {
  24         if (id == __NR_getpgid)
  25                 __sync_add_and_fetch(&hits, 1);
  26         return 0;
  27 }
  28
  29 SEC("kprobe/" SYS_PREFIX "sys_getpgid")
  30 int bench_trigger_kprobe(void *ctx)
  31 {
  32         __sync_add_and_fetch(&hits, 1);
  33         return 0;
  34 }
  35
  36 SEC("fentry/" SYS_PREFIX "sys_getpgid")
  37 int bench_trigger_fentry(void *ctx)
  38 {
  39         __sync_add_and_fetch(&hits, 1);
  40         return 0;
  41 }
  42
  43 SEC("fentry.s/" SYS_PREFIX "sys_getpgid")
  44 int bench_trigger_fentry_sleep(void *ctx)
  45 {
  46         __sync_add_and_fetch(&hits, 1);
  47         return 0;
  48 }
  49
  50 SEC("fmod_ret/" SYS_PREFIX "sys_getpgid")
  51 int bench_trigger_fmodret(void *ctx)
  52 {
  53         __sync_add_and_fetch(&hits, 1);
  54         return -22;
  55 }
  56
  57 SEC("uprobe")
  58 int bench_trigger_uprobe(void *ctx)
  59 {
  60         __sync_add_and_fetch(&hits, 1);
  61         return 0;
  62 }