queue-4.14/bpf-fix-missing-prototype-warnings.patch

   1 From aafcf2f05b511a2166d738cec7b27cd90b8cc49b Mon Sep 17 00:00:00 2001
   2 From: Valdis Kletnieks <valdis.kletnieks@vt.edu>
   3 Date: Tue, 29 Jan 2019 01:04:25 -0500
   4 Subject: bpf: fix missing prototype warnings
   5
   6 [ Upstream commit 116bfa96a255123ed209da6544f74a4f2eaca5da ]
   7
   8 Compiling with W=1 generates warnings:
   9
  10   CC      kernel/bpf/core.o
  11 kernel/bpf/core.c:721:12: warning: no previous prototype for ?bpf_jit_alloc_exec_limit? [-Wmissing-prototypes]
  12   721 | u64 __weak bpf_jit_alloc_exec_limit(void)
  13       |            ^~~~~~~~~~~~~~~~~~~~~~~~
  14 kernel/bpf/core.c:757:14: warning: no previous prototype for ?bpf_jit_alloc_exec? [-Wmissing-prototypes]
  15   757 | void *__weak bpf_jit_alloc_exec(unsigned long size)
  16       |              ^~~~~~~~~~~~~~~~~~
  17 kernel/bpf/core.c:762:13: warning: no previous prototype for ?bpf_jit_free_exec? [-Wmissing-prototypes]
  18   762 | void __weak bpf_jit_free_exec(void *addr)
  19       |             ^~~~~~~~~~~~~~~~~
  20
  21 All three are weak functions that archs can override, provide
  22 proper prototypes for when a new arch provides their own.
  23
  24 Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
  25 Acked-by: Song Liu <songliubraving@fb.com>
  26 Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
  27 Signed-off-by: Sasha Levin <sashal@kernel.org>
  28 ---
  29  include/linux/filter.h | 4 +++-
  30  1 file changed, 3 insertions(+), 1 deletion(-)
  31
  32 diff --git a/include/linux/filter.h b/include/linux/filter.h
  33 index 42197b16dd78..56d2cda9931b 100644
  34 --- a/include/linux/filter.h
  35 +++ b/include/linux/filter.h
  36 @@ -741,7 +741,9 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
  37                      unsigned int alignment,
  38                      bpf_jit_fill_hole_t bpf_fill_ill_insns);
  39  void bpf_jit_binary_free(struct bpf_binary_header *hdr);
  40 -
  41 +u64 bpf_jit_alloc_exec_limit(void);
  42 +void *bpf_jit_alloc_exec(unsigned long size);
  43 +void bpf_jit_free_exec(void *addr);
  44  void bpf_jit_free(struct bpf_prog *fp);
  45
  46  struct bpf_prog *bpf_jit_blind_constants(struct bpf_prog *fp);
  47 --
  48 2.19.1
  49