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-rw-r--r--include/linux/sched.h2
-rw-r--r--include/linux/thread_info.h10
2 files changed, 9 insertions, 3 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;
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 81c5f82f0663..38a56477f27a 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -92,7 +92,13 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
#define set_need_resched() set_thread_flag(TIF_NEED_RESCHED)
#define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED)
-#ifdef TIF_RESTORE_SIGMASK
+#if defined TIF_RESTORE_SIGMASK && !defined HAVE_SET_RESTORE_SIGMASK
+/*
+ * An arch can define its own version of set_restore_sigmask() to get the
+ * job done however works, with or without TIF_RESTORE_SIGMASK.
+ */
+#define HAVE_SET_RESTORE_SIGMASK 1
+
/**
* set_restore_sigmask() - make sure saved_sigmask processing gets done
*
@@ -109,7 +115,7 @@ static inline void set_restore_sigmask(void)
set_thread_flag(TIF_RESTORE_SIGMASK);
set_thread_flag(TIF_SIGPENDING);
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* TIF_RESTORE_SIGMASK && !HAVE_SET_RESTORE_SIGMASK */
#endif /* __KERNEL__ */