new helper: sigsuspend()

guts of saved_sigmask-based sigsuspend/rt_sigsuspend.  Takes
kernel sigset_t *.

Open-coded instances replaced with calling it.

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

2 files changed, 8 insertions, 24 deletions

diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c
index 289c584ba499..170f4970d590 100644
--- a/arch/cris/arch-v10/kernel/signal.c
+++ b/arch/cris/arch-v10/kernel/signal.c
@@ -48,19 +48,11 @@ void do_signal(int canrestart, struct pt_regs *regs);
  * dummy arguments to be able to reach the regs argument.  (Note that this
  * arrangement relies on old_sigset_t occupying one register.)
  */
-int sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof,
-        long srp, struct pt_regs *regs)
+int sys_sigsuspend(old_sigset_t mask)
 {
-        mask &= _BLOCKABLE;
-        spin_lock_irq(&current->sighand->siglock);
-        current->saved_sigmask = current->blocked;
-        siginitset(&current->blocked, mask);
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-        current->state = TASK_INTERRUPTIBLE;
-        schedule();
-        set_thread_flag(TIF_RESTORE_SIGMASK);
-        return -ERESTARTNOHAND;
+        sigset_t blocked;
+        siginitset(&blocked, mask);
+        return sigsuspend(&blocked);
 }
 
 int sys_sigaction(int sig, const struct old_sigaction __user *act,
diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c
index ce4ab1a5552c..e09083208cb6 100644
--- a/arch/cris/arch-v32/kernel/signal.c
+++ b/arch/cris/arch-v32/kernel/signal.c
@@ -59,19 +59,11 @@ void keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
  * dummy arguments to be able to reach the regs argument.
  */
 int
-sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof,
-               long srp, struct pt_regs *regs)
+sys_sigsuspend(old_sigset_t mask)
 {
-        mask &= _BLOCKABLE;
-        spin_lock_irq(&current->sighand->siglock);
-        current->saved_sigmask = current->blocked;
-        siginitset(&current->blocked, mask);
-        recalc_sigpending();
-        spin_unlock_irq(&current->sighand->siglock);
-        current->state = TASK_INTERRUPTIBLE;
-        schedule();
-        set_thread_flag(TIF_RESTORE_SIGMASK);
-        return -ERESTARTNOHAND;
+        sigset_t blocked;
+        siginitset(&blocked, mask);
+        return sigsuspend(&blocked);
 }
 
 int