diff options
| author | Yonghong Song <yhs@fb.com> | 2017-10-05 18:19:23 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-08 00:05:57 +0200 |
| commit | 81b9cf8028a17bdbdaa0da80b735b32150d4e89e (patch) | |
| tree | b5ec33cc6476e31c8e30c6623e635c6b75be80ae /tools | |
| parent | bpf: add helper bpf_perf_prog_read_value (diff) | |
| download | linux-81b9cf8028a17bdbdaa0da80b735b32150d4e89e.tar.xz linux-81b9cf8028a17bdbdaa0da80b735b32150d4e89e.zip | |
bpf: add a test case for helper bpf_perf_prog_read_value
The bpf sample program trace_event is enhanced to use the new
helper to print out enabled/running time.
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 3 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/bpf_helpers.h | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index cdf6c4f50b0f..0894fd20b12b 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -698,7 +698,8 @@ union bpf_attr { FN(sk_redirect_map), \ FN(sock_map_update), \ FN(xdp_adjust_meta), \ - FN(perf_event_read_value), + FN(perf_event_read_value), \ + FN(perf_prog_read_value), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index c15ca83dbbd9..e25dbf6038cf 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -75,6 +75,9 @@ static int (*bpf_sock_map_update)(void *map, void *key, void *value, static int (*bpf_perf_event_read_value)(void *map, unsigned long long flags, void *buf, unsigned int buf_size) = (void *) BPF_FUNC_perf_event_read_value; +static int (*bpf_perf_prog_read_value)(void *ctx, void *buf, + unsigned int buf_size) = + (void *) BPF_FUNC_perf_prog_read_value; /* llvm builtin functions that eBPF C program may use to |