linux-kernel - [PATCH] sched/s390: fix compile error in sched/core.c

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Message-Id: <1326268696-30904-1-git-send-email-borntraeger@de.ibm.com>
Date:	Wed, 11 Jan 2012 08:58:16 +0100
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org,
	Christian Borntraeger <borntraeger@...ibm.com>
Subject: [PATCH] sched/s390: fix compile error in sched/core.c

From: Christian Borntraeger <borntraeger@...ibm.com>

commit 029632fbb7b7c9d85063cc9eb470de6c54873df3
    sched: Make separate sched*.c translation units

removed the include of asm/mutex.h from sched.c. This breaks the combination of

CONFIG_MUTEX_SPIN_ON_OWNER=yes
CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX=yes
like s390 without mutex debugging:

  CC      kernel/sched/core.o
kernel/sched/core.c: In function ‘mutex_spin_on_owner’:
kernel/sched/core.c:3287: error: implicit declaration of function ‘arch_mutex_cpu_relax’
make[2]: *** [kernel/sched/core.o] Error 1

Lets re-add the include to kernel/sched/core.c

Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
---
 kernel/sched/core.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index cecbb64..f82efdc 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -74,6 +74,9 @@
 
 #include <asm/tlb.h>
 #include <asm/irq_regs.h>
+#ifdef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX
+#include <asm/mutex.h>
+#endif
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
 #endif
-- 
1.7.8.2

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