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From 6896b410d75a1fa668417b264fea7d55f320bcc2 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 16 Jun 2010 16:58:34 +0200
Subject: [PATCH] timer_stats: Convert table_lock to raw_spin_lock
commit faf35813f204901f85dd0c6b3c5092e0064c6c2f in tip.
table_lock is taken in atomic contexts and therefor cannot be
converted to a sleeping spinlock on rt. Make it raw.
Reported-by: Andreas Sundebo <kernel@sundebo.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Andreas Sundebo <kernel@sundebo.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.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;
}
--
1.7.0.4
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