From: Hirokazu Takata <takata@linux-m32r.org>
Date: Wed, 12 Sep 2007 08:51:35 +0000 (+0900)
Subject: m32r: Update sys_rt_sigsuspend
X-Git-Tag: v2.6.24-rc4~84^2
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=c37a33035720a0faf1f609dc7c2c07080ed83629;p=linux-2.6-omap-h63xx.git

m32r: Update sys_rt_sigsuspend

Update sys_rt_sigsuspend() of arch/m32r/signal.c.
This modification is derived from generic one of kernel/signal.c.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
---

diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
index a753d79c4e8..18124542a6e 100644
--- a/arch/m32r/kernel/signal.c
+++ b/arch/m32r/kernel/signal.c
@@ -36,7 +36,7 @@ sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize,
 		  unsigned long r2, unsigned long r3, unsigned long r4,
 		  unsigned long r5, unsigned long r6, struct pt_regs *regs)
 {
-	sigset_t saveset, newset;
+	sigset_t newset;
 
 	/* XXX: Don't preclude handling different sized sigset_t's.  */
 	if (sigsetsize != sizeof(sigset_t))
@@ -44,21 +44,18 @@ sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize,
 
 	if (copy_from_user(&newset, unewset, sizeof(newset)))
 		return -EFAULT;
-	sigdelsetmask(&newset, ~_BLOCKABLE);
+	sigdelsetmask(&newset, sigmask(SIGKILL)|sigmask(SIGSTOP));
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs->r0 = -EINTR;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(regs, &saveset))
-			return regs->r0;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 
 asmlinkage int
diff --git a/include/asm-m32r/thread_info.h b/include/asm-m32r/thread_info.h
index c039820dba7..1effcd0f5e6 100644
--- a/include/asm-m32r/thread_info.h
+++ b/include/asm-m32r/thread_info.h
@@ -149,16 +149,21 @@ static inline unsigned int get_thread_fault_code(void)
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
 #define TIF_SINGLESTEP		3	/* restore singlestep on return to user mode */
 #define TIF_IRET		4	/* return with iret */
-#define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
-					/* 31..28 fault code */
-#define TIF_MEMDIE		17
+#define TIF_RESTORE_SIGMASK	8	/* restore signal mask in do_signal() */
+#define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
+#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_MEMDIE		18	/* OOM killer killed process */
+#define TIF_FREEZE		19	/* is freezing for suspend */
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
 #define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)
 #define _TIF_IRET		(1<<TIF_IRET)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
+#define _TIF_USEDFPU		(1<<TIF_USEDFPU)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_FREEZE		(1<<TIF_FREEZE)
 
 #define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
 #define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */