[PATCH AUTOSEL 4.14 094/123] bpf: fix missing prototype warnings

Sasha Levin
2019-03-27T18:19:41Z

From: Valdis Kletnieks <valdis.kletnieks@vt.edu>

[ Upstream commit 116bfa96a255123ed209da6544f74a4f2eaca5da ]

Compiling with W=1 generates warnings:

CC kernel/bpf/core.o
kernel/bpf/core.c:721:12: warning: no previous prototype for ?bpf_jit_alloc_exec_limit? [-Wmissing-prototypes]
721 | u64 __weak bpf_jit_alloc_exec_limit(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~
kernel/bpf/core.c:757:14: warning: no previous prototype for ?bpf_jit_alloc_exec? [-Wmissing-prototypes]
757 | void *__weak bpf_jit_alloc_exec(unsigned long size)
| ^~~~~~~~~~~~~~~~~~
kernel/bpf/core.c:762:13: warning: no previous prototype for ?bpf_jit_free_exec? [-Wmissing-prototypes]
762 | void __weak bpf_jit_free_exec(void *addr)
| ^~~~~~~~~~~~~~~~~

All three are weak functions that archs can override, provide
proper prototypes for when a new arch provides their own.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/filter.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/filter.h b/include/linux/filter.h
index 42197b16dd78..56d2cda9931b 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -741,7 +741,9 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
unsigned int alignment,
bpf_jit_fill_hole_t bpf_fill_ill_insns);
void bpf_jit_binary_free(struct bpf_binary_header *hdr);
-
+u64 bpf_jit_alloc_exec_limit(void);
+void *bpf_jit_alloc_exec(unsigned long size);
+void bpf_jit_free_exec(void *addr);
void bpf_jit_free(struct bpf_prog *fp);

struct bpf_prog *bpf_jit_blind_constants(struct bpf_prog *fp);
--
2.19.1