futex: Fix PREEMPT_RT build

Mike reported that rcuwait went walk-about and is causing failures on the PREEMPT_RT builds, restore it. Reported-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
projectacrn · Oct 19, 2021 · 4d38167 · 4d38167
1 parent dd0aa2c
commit 4d38167
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/kernel/futex/futex.h b/kernel/futex/futex.h
@@ -5,6 +5,10 @@
 #include <linux/futex.h>
 #include <linux/sched/wake_q.h>
 
+#ifdef CONFIG_PREEMPT_RT
+#include <linux/rcuwait.h>
+#endif
+
 #include <asm/futex.h>
 
 /*