linux-kernel - [PATCH 26/26] softlockup: Convert to raw

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Message-Id: <1263245216-14754-27-git-send-email-jkacur@redhat.com>
Date:	Mon, 11 Jan 2010 22:26:56 +0100
From:	John Kacur <jkacur@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	lkml <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Cc:	Clark Williams <williams@...hat.com>,
	John Kacur <jkacur@...hat.com>
Subject: [PATCH 26/26] softlockup: Convert to raw_spinlocks

Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks

See also b20de918527a9c1558b3e8a02f935cf4cb53e3ba

Signed-off-by: John Kacur <jkacur@...hat.com>
---
 kernel/softlockup.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index d225790..8e63d20 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -20,7 +20,7 @@
 
 #include <asm/irq_regs.h>
 
-static DEFINE_SPINLOCK(print_lock);
+static DEFINE_RAW_SPINLOCK(print_lock);
 
 static DEFINE_PER_CPU(unsigned long, softlockup_touch_ts); /* touch timestamp */
 static DEFINE_PER_CPU(unsigned long, softlockup_print_ts); /* print timestamp */
@@ -149,7 +149,7 @@ void softlockup_tick(void)
 
 	per_cpu(softlockup_print_ts, this_cpu) = touch_ts;
 
-	spin_lock(&print_lock);
+	raw_spin_lock(&print_lock);
 	printk(KERN_ERR "BUG: soft lockup - CPU#%d stuck for %lus! [%s:%d]\n",
 			this_cpu, now - touch_ts,
 			current->comm, task_pid_nr(current));
@@ -159,7 +159,7 @@ void softlockup_tick(void)
 		show_regs(regs);
 	else
 		dump_stack();
-	spin_unlock(&print_lock);
+	raw_spin_unlock(&print_lock);
 
 	if (softlockup_panic)
 		panic("softlockup: hung tasks");
-- 
1.6.5.2

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