From dfc5be0dc0f83e70919a8ec59c122709a30f791e Mon Sep 17 00:00:00 2001 From: Alexander Alemayhu Date: Mon, 24 Apr 2017 15:31:08 +0200 Subject: [PATCH] samples/bpf: check before defining offsetof Fixes the following warning samples/bpf/test_lru_dist.c:28:0: warning: "offsetof" redefined #define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) In file included from ./tools/lib/bpf/bpf.h:25:0, from samples/bpf/libbpf.h:5, from samples/bpf/test_lru_dist.c:24: /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include/stddef.h:417:0: note: this is the location of the previous definition #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) Signed-off-by: Alexander Alemayhu Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- samples/bpf/test_lru_dist.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/samples/bpf/test_lru_dist.c b/samples/bpf/test_lru_dist.c index d96dc88d3b04..73c357142268 100644 --- a/samples/bpf/test_lru_dist.c +++ b/samples/bpf/test_lru_dist.c @@ -25,7 +25,9 @@ #include "bpf_util.h" #define min(a, b) ((a) < (b) ? (a) : (b)) -#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) +#ifndef offsetof +# define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) +#endif #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) -- 2.20.1