---

yaml
---
r: 321111
b: refs/heads/master
c: 0a267fa
h: refs/heads/master
i:
  321109: 92b34f2
  321107: 85fdec6
  321103: c98db2b
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8d4150ccbb63419649a69fe04b46120a46d60da2
+refs/heads/master: 0a267fa6a15d41c4061358bf2e67c633fdbffc90

trunk/arch/arm/kernel/entry-common.S

@@ -51,23 +51,10 @@ ret_fast_syscall:
 fast_work_pending:
 	str	r0, [sp, #S_R0+S_OFF]!		@ returned r0
 work_pending:
-	tst	r1, #_TIF_NEED_RESCHED
-	bne	work_resched
-	/*
-	 * TIF_SIGPENDING or TIF_NOTIFY_RESUME must've been set if we got here
-	 */
-	ldr	r2, [sp, #S_PSR]
 	mov	r0, sp				@ 'regs'
-	tst	r2, #15				@ are we returning to user mode?
-	bne	no_work_pending			@ no?  just leave, then...
 	mov	r2, why				@ 'syscall'
-	tst	r1, #_TIF_SIGPENDING		@ delivering a signal?
-	movne	why, #0				@ prevent further restarts
-	bl	do_notify_resume
-	b	ret_slow_syscall		@ Check work again
-
-work_resched:
-	bl	schedule
+	bl	do_work_pending
+	b	no_work_pending
 /*
  * "slow" syscall return path.  "why" tells us if this was a real syscall.
  */

trunk/arch/arm/kernel/signal.c

@@ -640,13 +640,24 @@ static void do_signal(struct pt_regs *regs, int syscall)
 }
 
 asmlinkage void
-do_notify_resume(struct pt_regs *regs, unsigned int thread_flags, int syscall)
+do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
 {
-	if (thread_flags & _TIF_SIGPENDING)
-		do_signal(regs, syscall);
-
-	if (thread_flags & _TIF_NOTIFY_RESUME) {
-		clear_thread_flag(TIF_NOTIFY_RESUME);
-		tracehook_notify_resume(regs);
-	}
+	do {
+		if (likely(thread_flags & _TIF_NEED_RESCHED)) {
+			schedule();
+		} else {
+			if (unlikely(!user_mode(regs)))
+				return;
+			local_irq_enable();
+			if (thread_flags & _TIF_SIGPENDING) {
+				do_signal(regs, syscall);
+				syscall = 0;
+			} else {
+				clear_thread_flag(TIF_NOTIFY_RESUME);
+				tracehook_notify_resume(regs);
+			}
+		}
+		local_irq_disable();
+		thread_flags = current_thread_info()->flags;
+	} while (thread_flags & _TIF_WORK_MASK);
 }