diff options
| author | Yonghong Song <yhs@fb.com> | 2017-10-05 19:19:21 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-08 01:05:57 +0300 |
| commit | 020a32d9581ac824d038b0b4e24e977e3cc8589f (patch) | |
| tree | f0256aea3e0a98cbba98b91248983b6d90793357 /tools | |
| parent | 908432ca84fc229e906ba164219e9ad0fe56f755 (diff) | |
| download | linux-020a32d9581ac824d038b0b4e24e977e3cc8589f.tar.xz | |
bpf: add a test case for helper bpf_perf_event_read_value
The bpf sample program tracex6 is enhanced to use the new
helper to read enabled/running time as well.
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 cb2b9f95160a..cdf6c4f50b0f 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -697,7 +697,8 @@ union bpf_attr { FN(redirect_map), \ FN(sk_redirect_map), \ FN(sock_map_update), \ - FN(xdp_adjust_meta), + FN(xdp_adjust_meta), \ + FN(perf_event_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 a56053db26f5..c15ca83dbbd9 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -72,6 +72,9 @@ static int (*bpf_sk_redirect_map)(void *map, int key, int flags) = static int (*bpf_sock_map_update)(void *map, void *key, void *value, unsigned long long flags) = (void *) BPF_FUNC_sock_map_update; +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; /* llvm builtin functions that eBPF C program may use to |