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/nds32/include/asm/uaccess.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/nds32/include/asm/uaccess.h b/arch/nds32/include/asm/uaccess.h
index 010ba5f..d4cbf06 100644
--- a/arch/nds32/include/asm/uaccess.h
+++ b/arch/nds32/include/asm/uaccess.h
@@ -260,7 +260,6 @@ do { \
extern unsigned long __arch_clear_user(void __user * addr, unsigned long n);
extern long strncpy_from_user(char *dest, const char __user * src, long count);
-extern __must_check long strlen_user(const char __user * str);
extern __must_check long strnlen_user(const char __user * str, long n);
extern unsigned long __arch_copy_from_user(void *to, const void __user * from,
unsigned long n);
--
2.7.4
