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04fd09d4 SL |
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 |