diff options
| author | Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com> | 2016-12-15 12:29:27 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-12-20 09:37:33 -0300 |
| commit | 96c2fb69b92fcf6006dfb3017d6d887f8321407b (patch) | |
| tree | 53f0ba13c187ffdfe352df05114002cb864e4b28 /samples/bpf/trace_output_user.c | |
| parent | d40fc181ebec6b1d560e2167208276baa4f3bbf0 (diff) | |
| download | lwn-96c2fb69b92fcf6006dfb3017d6d887f8321407b.tar.gz lwn-96c2fb69b92fcf6006dfb3017d6d887f8321407b.zip | |
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.c | 2 |
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; |