tile: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/tile/kernel/signal.c b/arch/tile/kernel/signal.c
index 657a7ac..9531845b 100644
--- a/arch/tile/kernel/signal.c
+++ b/arch/tile/kernel/signal.c
@@ -37,13 +37,6 @@
#define DEBUG_SIG 0
-SYSCALL_DEFINE2(sigaltstack, const stack_t __user *, uss,
- stack_t __user *, uoss)
-{
- return do_sigaltstack(uss, uoss, current_pt_regs()->sp);
-}
-
-
/*
* Do a signal return; undo the signal stack.
*/
@@ -100,7 +93,7 @@
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->sp) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
return 0;
@@ -191,11 +184,7 @@
err |= __clear_user(&frame->save_area, sizeof(frame->save_area));
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __put_user((void __user *)(current->sas_ss_sp),
- &frame->uc.uc_stack.ss_sp);
- err |= __put_user(sas_ss_flags(regs->sp),
- &frame->uc.uc_stack.ss_flags);
- err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= __save_altstack(&frame->uc.uc_stack, regs->sp);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)