signals: use HAVE_SET_RESTORE_SIGMASK

Change all the #ifdef TIF_RESTORE_SIGMASK conditionals in non-arch code to
#ifdef HAVE_SET_RESTORE_SIGMASK.  If arch code defines it first, the generic
set_restore_sigmask() using TIF_RESTORE_SIGMASK is not defined.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index fe970cdca83c..86e60796db62 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1175,7 +1175,7 @@ struct task_struct {
         struct sighand_struct *sighand;
 
         sigset_t blocked, real_blocked;
-        sigset_t saved_sigmask;         /* To be restored with TIF_RESTORE_SIGMASK */
+        sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */
         struct sigpending pending;
 
         unsigned long sas_ss_sp;