bpf, tracex3_user: erase "ARRAY_SIZE" redefined

yuzibo · borkmann · commit 20cdeb5408da · 2018-10-04T16:31:57.000+02:00
There is a warning when compiling bpf sample programs in sample/bpf:

  make -C /home/foo/bpf/samples/bpf/../../tools/lib/bpf/ RM='rm -rf' LDFLAGS= srctree=/home/foo/bpf/samples/bpf/../../ O=
    HOSTCC  /home/foo/bpf/samples/bpf/tracex3_user.o
  /home/foo/bpf/samples/bpf/tracex3_user.c:20:0: warning: "ARRAY_SIZE" redefined
   #define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))

  In file included from /home/foo/bpf/samples/bpf/tracex3_user.c:18:0:
  ./tools/testing/selftests/bpf/bpf_util.h:48:0: note: this is the location of the previous definition
   # define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

Signed-off-by: Bo YU &lt;tsu.yubo@gmail.com&gt;
Signed-off-by: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
diff --git a/samples/bpf/tracex3_user.c b/samples/bpf/tracex3_user.c
@@ -17,8 +17,6 @@
 #include "bpf_load.h"
 #include "bpf_util.h"
 
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
-
 #define SLOTS 100
 
 static void clear_stats(int fd)
