arm64: Do not include asm/unistd32.h in asm/unistd.h

This patch only includes asm/unistd32.h where necessary and removes its
inclusion in the asm/unistd.h file. The __SYSCALL_COMPAT guard is
dropped.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>

arch/arm64/include/asm/unistd.h

@@ -14,12 +14,20 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef __SYSCALL_COMPAT
 #include <asm-generic/unistd.h>
-#endif
 
 #ifdef __KERNEL__
 #ifdef CONFIG_COMPAT
-#include <asm/unistd32.h>
+#define __ARCH_WANT_COMPAT_IPC_PARSE_VERSION
+#define __ARCH_WANT_COMPAT_STAT64
+#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_SYS_PAUSE
+#define __ARCH_WANT_SYS_GETPGRP
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_NICE
+#define __ARCH_WANT_SYS_SIGPENDING
+#define __ARCH_WANT_SYS_SIGPROCMASK
+#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_COMPAT_SYS_SENDFILE
 #endif
 #endif

arch/arm64/include/asm/unistd32.h

@@ -21,8 +21,6 @@
 #define __SYSCALL(x, y)
 #endif
 
-#ifdef __SYSCALL_COMPAT
-
 __SYSCALL(0,   sys_restart_syscall)
 __SYSCALL(1,   sys_exit)
 __SYSCALL(2,   compat_sys_fork_wrapper)
@@ -414,19 +412,3 @@ __SYSCALL(373, sys_syncfs)
 #define __ARM_NR_COMPAT_BASE		0x0f0000
 #define __ARM_NR_compat_cacheflush	(__ARM_NR_COMPAT_BASE+2)
 #define __ARM_NR_compat_set_tls		(__ARM_NR_COMPAT_BASE+5)
-
-#endif	/* __SYSCALL_COMPAT */
-
-#define __NR_compat_syscalls		374
-
-#define __ARCH_WANT_COMPAT_IPC_PARSE_VERSION
-#define __ARCH_WANT_COMPAT_STAT64
-#define __ARCH_WANT_SYS_GETHOSTNAME
-#define __ARCH_WANT_SYS_PAUSE
-#define __ARCH_WANT_SYS_GETPGRP
-#define __ARCH_WANT_SYS_LLSEEK
-#define __ARCH_WANT_SYS_NICE
-#define __ARCH_WANT_SYS_SIGPENDING
-#define __ARCH_WANT_SYS_SIGPROCMASK
-#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-#define __ARCH_WANT_COMPAT_SYS_SENDFILE

arch/arm64/kernel/entry.S

@@ -26,6 +26,7 @@
 #include <asm/errno.h>
 #include <asm/thread_info.h>
 #include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 /*
  * Bad Abort numbers

arch/arm64/kernel/signal32.c

@@ -18,8 +18,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define __SYSCALL_COMPAT
-
 #include <linux/compat.h>
 #include <linux/signal.h>
 #include <linux/syscalls.h>
@@ -28,7 +26,7 @@
 #include <asm/fpsimd.h>
 #include <asm/signal32.h>
 #include <asm/uaccess.h>
-#include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 struct compat_sigaction {
 	compat_uptr_t			sa_handler;

arch/arm64/kernel/sys32.S

@@ -149,11 +149,10 @@ ENDPROC(compat_sys_fanotify_mark_wrapper)
 
 #undef __SYSCALL
 #define __SYSCALL(x, y)		.quad	y	// x
-#define __SYSCALL_COMPAT
 
 /*
  * The system calls table must be 4KB aligned.
  */
 	.align	12
 ENTRY(compat_sys_call_table)
-#include <asm/unistd.h>
+#include <asm/unistd32.h>

arch/arm64/kernel/sys_compat.c

@@ -18,8 +18,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define __SYSCALL_COMPAT
-
 #include <linux/compat.h>
 #include <linux/personality.h>
 #include <linux/sched.h>
@@ -28,7 +26,7 @@
 #include <linux/uaccess.h>
 
 #include <asm/cacheflush.h>
-#include <asm/unistd.h>
+#include <asm/unistd32.h>
 
 asmlinkage int compat_sys_fork(struct pt_regs *regs)
 {