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-rw-r--r--include/linux/thread_info.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index db78775eff3..eee72942868 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -129,6 +129,10 @@ static inline void set_restore_sigmask(void)
}
#endif /* TIF_RESTORE_SIGMASK && !HAVE_SET_RESTORE_SIGMASK */
+#ifndef HAVE_SET_RESTORE_SIGMASK
+#error "no set_restore_sigmask() provided and default one won't work"
+#endif
+
#endif /* __KERNEL__ */
#endif /* _LINUX_THREAD_INFO_H */