5 files changed, 5 insertions, 22 deletions
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index 2201e9c20e4..c1ea9eb0446 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -8,7 +8,8 @@ obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \
 	setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \
 	sysrq.o ksyms.o tls.o
 
-subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o
+subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \
+		lib/rwsem_64.o
 subarch-obj-$(CONFIG_MODULES) += kernel/module.o
 
 ldt-y = ../sys-i386/ldt.o
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
index 49655c83efd..d760967f33a 100644
--- a/arch/um/sys-x86_64/asm/elf.h
+++ b/arch/um/sys-x86_64/asm/elf.h
@@ -95,6 +95,8 @@ typedef struct user_i387_struct elf_fpregset_t;
 	(pr_reg)[25] = 0;					\
 	(pr_reg)[26] = 0;
 
+struct task_struct;
+
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
 
 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index 1a899a7ed7a..b6b65c7c7a7 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -6,6 +6,7 @@
 
 #include <linux/personality.h>
 #include <linux/ptrace.h>
+#include <linux/kernel.h>
 #include <asm/unistd.h>
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>
@@ -165,8 +166,6 @@ struct rt_sigframe
 	struct _fpstate fpstate;
 };
 
-#define round_down(m, n) (((m) / (n)) * (n))
-
 int setup_signal_stack_si(unsigned long stack_top, int sig,
 			  struct k_sigaction *ka, struct pt_regs * regs,
 			  siginfo_t *info, sigset_t *set)
diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c
index dd21d69715e..47d469e7e7c 100644
--- a/arch/um/sys-x86_64/syscall_table.c
+++ b/arch/um/sys-x86_64/syscall_table.c
@@ -26,11 +26,6 @@
 
 /* On UML we call it this way ("old" means it's not mmap2) */
 #define sys_mmap old_mmap
-/*
- * On x86-64 sys_uname is actually sys_newuname plus a compatibility trick.
- * See arch/x86_64/kernel/sys_x86_64.c
- */
-#define sys_uname sys_uname64
 
 #define stub_clone sys_clone
 #define stub_fork sys_fork
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index f1199fd34d3..f3d82bb6e15 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -12,20 +12,6 @@
 #include "asm/uaccess.h"
 #include "os.h"
 
-asmlinkage long sys_uname64(struct new_utsname __user * name)
-{
-	int err;
-
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-
-	if (personality(current->personality) == PER_LINUX32)
-		err |= copy_to_user(&name->machine, "i686", 5);
-
-	return err ? -EFAULT : 0;
-}
-
 long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr)
 {
 	unsigned long *ptr = addr, tmp;