linux-kernel - [PATCH v3 2/7] kernel/locking: Fix compile error with qrwlock.c

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Date:   Tue, 23 May 2017 15:45:53 -0600
From:   Babu Moger <babu.moger@...cle.com>
To:     davem@...emloft.net, peterz@...radead.org, mingo@...hat.com,
        arnd@...db.de
Cc:     babu.moger@...cle.com, shannon.nelson@...cle.com,
        haakon.bugge@...cle.com, steven.sistare@...cle.com,
        vijay.ac.kumar@...cle.com, jane.chu@...cle.com,
        sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: [PATCH v3 2/7] kernel/locking: Fix compile error with qrwlock.c

Saw these compile errors on SPARC when queued rwlock feature is enabled.

 CC      kernel/locking/qrwlock.o
kernel/locking/qrwlock.c: In function ‘queued_read_lock_slowpath’:
kernel/locking/qrwlock.c:89: error: implicit declaration of function ‘arch_spin_lock’
kernel/locking/qrwlock.c:102: error: implicit declaration of function ‘arch_spin_unlock’
make[4]: *** [kernel/locking/qrwlock.o] Error 1

Include spinlock.h in qrwlock.c to fix it.

Signed-off-by: Babu Moger <babu.moger@...cle.com>
Reviewed-by: Håkon Bugge <haakon.bugge@...cle.com>
Reviewed-by: Jane Chu <jane.chu@...cle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@...cle.com>
Reviewed-by: Vijay Kumar <vijay.ac.kumar@...cle.com>
---
 kernel/locking/qrwlock.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/locking/qrwlock.c b/kernel/locking/qrwlock.c
index cc3ed0c..2655f26 100644
--- a/kernel/locking/qrwlock.c
+++ b/kernel/locking/qrwlock.c
@@ -20,6 +20,7 @@
 #include <linux/cpumask.h>
 #include <linux/percpu.h>
 #include <linux/hardirq.h>
+#include <linux/spinlock.h>
 #include <asm/qrwlock.h>
 
 /*
-- 
1.7.1