alpha: take SIGPENDING/NOTIFY_RESUME loop into signal.c

Turn the slow side of work_pending into C function, including all
the looping.  What we get out of that:
	* we do _not_ call get_signal_to_deliver() with IRQs disabled
anymore
	* no need to save/restore volatiles on each pass if there
turns to be more than one (unlikely, but still)
	* all double-restart prevention is in C now.
	* glue gets simpler.

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

1 files changed, 2 insertions, 8 deletions

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 802108b15be8..0c30ccea9294 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -390,15 +390,9 @@ $work_notifysig:
         bsr     $1, do_switch_stack
         mov     $sp, $17
         mov     $5, $18
-        mov     $19, $9         /* save old syscall number */
-        mov     $20, $10        /* save old a3 */
-        and     $5, _TIF_SIGPENDING, $2
-        cmovne  $2, 0, $9       /* we don't want double syscall restarts */
-        jsr     $26, do_notify_resume
-        mov     $9, $19
-        mov     $10, $20
+        jsr     $26, do_work_pending
         bsr     $1, undo_switch_stack
-        br      ret_to_user
+        br      restore_all
 .end work_pending
 
 /*