diff options
Diffstat (limited to 'tools/build/feature/test-bpf.c')
| -rw-r--r-- | tools/build/feature/test-bpf.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/tools/build/feature/test-bpf.c b/tools/build/feature/test-bpf.c index 062bac811af9..b389026839b9 100644 --- a/tools/build/feature/test-bpf.c +++ b/tools/build/feature/test-bpf.c @@ -1,9 +1,23 @@ +#include <asm/unistd.h> #include <linux/bpf.h> +#include <unistd.h> + +#ifndef __NR_bpf +# if defined(__i386__) +# define __NR_bpf 357 +# elif defined(__x86_64__) +# define __NR_bpf 321 +# elif defined(__aarch64__) +# define __NR_bpf 280 +# error __NR_bpf not defined. libbpf does not support your arch. +# endif +#endif int main(void) { union bpf_attr attr; + /* Check fields in attr */ attr.prog_type = BPF_PROG_TYPE_KPROBE; attr.insn_cnt = 0; attr.insns = 0; @@ -14,5 +28,9 @@ int main(void) attr.kern_version = 0; attr = attr; - return 0; + /* + * Test existence of __NR_bpf and BPF_PROG_LOAD. + * This call should fail if we run the testcase. + */ + return syscall(__NR_bpf, BPF_PROG_LOAD, attr, sizeof(attr)); } |