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[5.10,041/663] bpf: Add bpf_patch_call_args prototype to include/linux/bpf.h

Message ID 20210301161143.807463242@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman March 1, 2021, 4:04 p.m. UTC 
From: Andrii Nakryiko <andrii@kernel.org>

[ Upstream commit a643bff752dcf72a07e1b2ab2f8587e4f51118be ]

Add bpf_patch_call_args() prototype. This function is called from BPF verifier
and only if CONFIG_BPF_JIT_ALWAYS_ON is not defined. This fixes compiler
warning about missing prototype in some kernel configurations.

Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210112075520.4103414-2-andrii@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/bpf.h | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 2b16bf48aab61..642ce03f19c4c 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -1371,7 +1371,10 @@  static inline void bpf_long_memcpy(void *dst, const void *src, u32 size)
 /* verify correctness of eBPF program */
 int bpf_check(struct bpf_prog **fp, union bpf_attr *attr,
 	      union bpf_attr __user *uattr);
+
+#ifndef CONFIG_BPF_JIT_ALWAYS_ON
 void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
+#endif
 
 struct btf *bpf_get_btf_vmlinux(void);