1 // SPDX-License-Identifier: GPL-2.0 2 #include <vmlinux.h> 3 #include <bpf/bpf_helpers.h> 4 #include <bpf/bpf_tracing.h> 5 6 char _license[] SEC("license") = "GPL"; 7 8 int pid = 0; 9 10 __u64 test_result_fentry = 0; 11 __u64 test_result_fexit = 0; 12 13 SEC("?fentry.multi") 14 int BPF_PROG(test_fentry) 15 { 16 if (bpf_get_current_pid_tgid() >> 32 != pid) 17 return 0; 18 19 test_result_fentry++; 20 return 0; 21 } 22 23 SEC("?fexit.multi") 24 int BPF_PROG(test_fexit) 25 { 26 if (bpf_get_current_pid_tgid() >> 32 != pid) 27 return 0; 28 29 test_result_fexit++; 30 return 0; 31 } 32 33 SEC("?fentry/bpf_fentry_test1") 34 int BPF_PROG(extra) 35 { 36 return 0; 37 } 38 39 SEC("?fentry/bpf_fentry_test10") 40 int BPF_PROG(filler) 41 { 42 return 0; 43 } 44