From: Andrii Nakryiko Date: Sun, 21 Jun 2020 03:11:59 +0000 (-0700) Subject: libbpf: Forward-declare bpf_stats_type for systems with outdated UAPI headers X-Git-Tag: v5.10.7~2151^2~55^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4e15507fea70c0c312d79610efa46b6853ccf8e0;p=platform%2Fkernel%2Flinux-rpi.git libbpf: Forward-declare bpf_stats_type for systems with outdated UAPI headers Systems that doesn't yet have the very latest linux/bpf.h header, enum bpf_stats_type will be undefined, causing compilation warnings.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 Signed-off-by: Daniel Borkmann Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20200621031159.2279101-1-andriin@fb.com --- diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index 1b6015b..dbef24e 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