From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> $ grep strlen_user * -r arch/csky/include/asm/uaccess.h:#define strlen_user(str) strnlen_user(str, 32767) arch/csky/lib/usercopy.c: * strlen_user: - Get the size of a string in user space. arch/ia64/lib/strlen.S: // Please note that in the case of strlen() as opposed to strlen_user() arch/mips/lib/strnlen_user.S: * make strlen_user and strnlen_user access the first few KSEG0 arch/nds32/include/asm/uaccess.h:extern __must_check long strlen_user(const char __user * str); arch/nios2/include/asm/uaccess.h:extern __must_check long strlen_user(const char __user *str); arch/riscv/include/asm/uaccess.h:extern long __must_check strlen_user(const char __user *str); kernel/trace/trace_probe_tmpl.h:static nokprobe_inline int fetch_store_strlen_user(unsigned long addr); kernel/trace/trace_probe_tmpl.h: ret += fetch_store_strlen_user(val + code->offset); kernel/trace/trace_uprobe.c:fetch_store_strlen_user(unsigned long addr) kernel/trace/trace_kprobe.c:fetch_store_strlen_user(unsigned long addr) kernel/trace/trace_kprobe.c: return fetch_store_strlen_user(addr); See grep result, nobody uses it. Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> --- arch/riscv/include/asm/uaccess.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/riscv/include/asm/uaccess.h b/arch/riscv/include/asm/uaccess.h index 824b2c9..4297f43 100644 --- a/arch/riscv/include/asm/uaccess.h +++ b/arch/riscv/include/asm/uaccess.h @@ -372,7 +372,6 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n) extern long strncpy_from_user(char *dest, const char __user *src, long count); -extern long __must_check strlen_user(const char __user *str); extern long __must_check strnlen_user(const char __user *str, long n); extern -- 2.7.4
