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Subject[PATCH] sched/swait: include wait.h
kbuild bot reported against an intermediate RT patch that the build
fails with:

> In file included from include/linux/completion.h:12:0,
> from include/linux/rcupdate_wait.h:10,
> from kernel/rcu/srcutiny.c:27:
> kernel/rcu/srcutiny.c: In function 'srcu_drive_gp':
> >> include/linux/swait.h:172:7: error: implicit declaration of function '___wait_is_interruptible'; did you mean '__swait_event_interruptible'?
> if (___wait_is_interruptible(state) && __int) { \

That error vanishes a few patches later (in the RT queue) because wait.h
is then pulled in by other means. It does not seem to surface on !RT.
I think that swait should include a header file for a function/macro
(___wait_is_interruptible()) it is using.

Reported-by: kbuild test robot <>
Signed-off-by: Sebastian Andrzej Siewior <>
include/linux/swait.h | 1 +
1 file changed, 1 insertion(+)

--- a/include/linux/swait.h
+++ b/include/linux/swait.h
@@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/stddef.h>
#include <linux/spinlock.h>
+#include <linux/wait.h>
#include <asm/current.h>

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