linux-kernel - [PATCH] sched/swait: include wait.h

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Message-Id: <20180504104224.20218-1-bigeasy@linutronix.de>
Date:   Fri,  4 May 2018 12:42:24 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
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 <fengguang.wu@...el.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 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>
 
 /*