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Donenfeld" , Kumar Kartikeya Dwivedi , Delyan Kratunov , Ilya Leoshkevich , Menglong Dong , Yafang Shao , bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] bpf: hide unused bpf_patch_call_args Date: Wed, 17 May 2023 14:56:08 +0200 Message-Id: <20230517125617.931437-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1766147126014203311?= X-GMAIL-MSGID: =?utf-8?q?1766147126014203311?= From: Arnd Bergmann This function has no callers and no declaration when CONFIG_BPF_JIT_ALWAYS_ON is enabled: kernel/bpf/core.c:2075:6: error: no previous prototype for 'bpf_patch_call_args' [-Werror=missing-prototypes] Hide the definition as well. Signed-off-by: Arnd Bergmann --- kernel/bpf/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 7421487422d4..6f5ede31e471 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -2064,7 +2064,7 @@ EVAL4(PROG_NAME_LIST, 416, 448, 480, 512) }; #undef PROG_NAME_LIST #define PROG_NAME_LIST(stack_size) PROG_NAME_ARGS(stack_size), -static u64 (*interpreters_args[])(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5, +static __maybe_unused u64 (*interpreters_args[])(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5, const struct bpf_insn *insn) = { EVAL6(PROG_NAME_LIST, 32, 64, 96, 128, 160, 192) EVAL6(PROG_NAME_LIST, 224, 256, 288, 320, 352, 384) @@ -2072,6 +2072,7 @@ EVAL4(PROG_NAME_LIST, 416, 448, 480, 512) }; #undef PROG_NAME_LIST +#ifdef CONFIG_BPF_SYSCALL void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth) { stack_depth = max_t(u32, stack_depth, 1); @@ -2080,6 +2081,7 @@ void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth) __bpf_call_base_args; insn->code = BPF_JMP | BPF_CALL_ARGS; } +#endif #else static unsigned int __bpf_prog_ret0_warn(const void *ctx,