linux-kernel - [PATCH 16/26] timer_stats: Convert to raw

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Message-Id: <1263245216-14754-17-git-send-email-jkacur@redhat.com>
Date:	Mon, 11 Jan 2010 22:26:46 +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 16/26] timer_stats: Convert to raw_spinlocks

Convert locks which cannot sleep in preempt-rt to raw_spinlocks.

See also 54852508231ef28058a88480b2f9ab9b859b0e38
Completes the conversion started in ecb49d1a639acbacfc3771cae5ec07bed5df3847

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

diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
index 2f3b585..30cb955 100644
--- a/kernel/time/timer_stats.c
+++ b/kernel/time/timer_stats.c
@@ -81,7 +81,7 @@ struct entry {
 /*
  * Spinlock protecting the tables - not taken during lookup:
  */
-static DEFINE_SPINLOCK(table_lock);
+static DEFINE_RAW_SPINLOCK(table_lock);
 
 /*
  * Per-CPU lookup locks for fast hash lookup:
@@ -188,7 +188,7 @@ static struct entry *tstat_lookup(struct entry *entry, char *comm)
 	prev = NULL;
 	curr = *head;
 
-	spin_lock(&table_lock);
+	raw_spin_lock(&table_lock);
 	/*
 	 * Make sure we have not raced with another CPU:
 	 */
@@ -215,7 +215,7 @@ static struct entry *tstat_lookup(struct entry *entry, char *comm)
 			*head = curr;
 	}
  out_unlock:
-	spin_unlock(&table_lock);
+	raw_spin_unlock(&table_lock);
 
 	return curr;
 }
-- 
1.6.5.2

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