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authorArnaldo Carvalho de Melo <arnaldo.melo@gmail.com>2016-12-15 12:29:27 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-12-20 09:37:33 -0300
commit96c2fb69b92fcf6006dfb3017d6d887f8321407b (patch)
tree53f0ba13c187ffdfe352df05114002cb864e4b28 /samples/bpf/trace_output_user.c
parentd40fc181ebec6b1d560e2167208276baa4f3bbf0 (diff)
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samples/bpf: Make perf_event_read() static
While testing Joe's conversion of samples/bpf/ to use tools/lib/bpf/ I noticed some warnings building samples/bpf/ on a Fedora Rawhide container, with clang/llvm 3.9 I noticed this: [root@1e797fdfbf4f linux]# make -j4 O=/tmp/build/linux/ samples/bpf/ make[1]: Entering directory '/tmp/build/linux' CHK include/config/kernel.release GEN ./Makefile CHK include/generated/uapi/linux/version.h Using /git/linux as source for kernel <SNIP> HOSTCC samples/bpf/trace_output_user.o /git/linux/samples/bpf/trace_output_user.c:64:6: warning: no previous prototype for 'perf_event_read' [-Wmissing-prototypes] void perf_event_read(print_fn fn) ^~~~~~~~~~~~~~~ HOSTLD samples/bpf/trace_output make[1]: Leaving directory '/tmp/build/linux' Shut up the compiler by making that function static. Acked-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Joe Stringer <joe@ovn.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20161215152927.GC6866@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'samples/bpf/trace_output_user.c')
-rw-r--r--samples/bpf/trace_output_user.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/trace_output_user.c b/samples/bpf/trace_output_user.c
index 3bedd945def1..1a1da7bddb93 100644
--- a/samples/bpf/trace_output_user.c
+++ b/samples/bpf/trace_output_user.c
@@ -61,7 +61,7 @@ struct perf_event_sample {
char data[];
};
-void perf_event_read(print_fn fn)
+static void perf_event_read(print_fn fn)
{
__u64 data_tail = header->data_tail;
__u64 data_head = header->data_head;