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authorAndrii Nakryiko <andriin@fb.com>2020-06-20 20:11:59 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2020-06-22 23:23:49 +0200
commit4e15507fea70c0c312d79610efa46b6853ccf8e0 (patch)
tree6073dd31bd2a931030b81880f7ddfc437e4e56b5 /tools/lib/bpf
parentb0c34bde72a59c05e826bf0a5aeca0d73f38f791 (diff)
downloadlinux-4e15507fea70c0c312d79610efa46b6853ccf8e0.tar.bz2
libbpf: Forward-declare bpf_stats_type for systems with outdated UAPI headers
Systems that doesn't yet have the very latest linux/bpf.h header, enum bpf_stats_type will be undefined, causing compilation warnings. Prevents this by forward-declaring enum. Fixes: 0bee106716cf ("libbpf: Add support for command BPF_ENABLE_STATS") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200621031159.2279101-1-andriin@fb.com
Diffstat (limited to 'tools/lib/bpf')
-rw-r--r--tools/lib/bpf/bpf.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 1b6015b21ba8..dbef24ebcfcb 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -233,6 +233,8 @@ LIBBPF_API int bpf_load_btf(void *btf, __u32 btf_size, char *log_buf,
LIBBPF_API int bpf_task_fd_query(int pid, int fd, __u32 flags, char *buf,
__u32 *buf_len, __u32 *prog_id, __u32 *fd_type,
__u64 *probe_offset, __u64 *probe_addr);
+
+enum bpf_stats_type; /* defined in up-to-date linux/bpf.h */
LIBBPF_API int bpf_enable_stats(enum bpf_stats_type type);
#ifdef __cplusplus