switch compat_sys_sigaltstack() to COMPAT_SYSCALL_DEFINE

Makes sigaltstack conversion easier to split into per-architecture
parts.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/kernel/signal.c b/kernel/signal.c
index 7aaa51d..00b4a6d 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3119,8 +3119,9 @@ int __save_altstack(stack_t __user *uss, unsigned long sp)
 
 #ifdef CONFIG_COMPAT
 #ifdef CONFIG_GENERIC_SIGALTSTACK
-asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
-                                      compat_stack_t __user *uoss_ptr)
+COMPAT_SYSCALL_DEFINE2(sigaltstack,
+                       const compat_stack_t __user *, uss_ptr,
+                       compat_stack_t __user *, uoss_ptr)
 {
        stack_t uss, uoss;
        int ret;