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
   9 char _license[] SEC("license") = "GPL";
  10
  11 long hits = 0;
  12
  13 SEC("tp/syscalls/sys_enter_getpgid")
  14 int bench_trigger_tp(void *ctx)
  15 {
  16         __sync_add_and_fetch(&hits, 1);
  17         return 0;
  18 }
  19
  20 SEC("raw_tp/sys_enter")
  21 int BPF_PROG(bench_trigger_raw_tp, struct pt_regs *regs, long id)
  22 {
  23         if (id == __NR_getpgid)
  24                 __sync_add_and_fetch(&hits, 1);
  25         return 0;
  26 }
  27
  28 SEC("kprobe/__x64_sys_getpgid")
  29 int bench_trigger_kprobe(void *ctx)
  30 {
  31         __sync_add_and_fetch(&hits, 1);
  32         return 0;
  33 }
  34
  35 SEC("fentry/__x64_sys_getpgid")
  36 int bench_trigger_fentry(void *ctx)
  37 {
  38         __sync_add_and_fetch(&hits, 1);
  39         return 0;
  40 }
  41
  42 SEC("fentry.s/__x64_sys_getpgid")
  43 int bench_trigger_fentry_sleep(void *ctx)
  44 {
  45         __sync_add_and_fetch(&hits, 1);
  46         return 0;
  47 }
  48
  49 SEC("fmod_ret/__x64_sys_getpgid")
  50 int bench_trigger_fmodret(void *ctx)
  51 {
  52         __sync_add_and_fetch(&hits, 1);
  53         return -22;
  54 }