linux-kernel - [PATCH] kernel: timer: looping issue, need reset variable 'found'

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Message-ID: <51B4A408.4050909@asianux.com>
Date:	Sun, 09 Jun 2013 23:49:28 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] kernel: timer: looping issue, need reset variable 'found'


According to __internal_add_timer(), in _next_timer_interrupt(), when
'tv1.vec' find one, but need 'cascade bucket(s)', we still need find
each slot of 'tv*.vec'.

So need reset variable 'found', so can fully scan ''do {...} while()''
for 'tv*.vec'.


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 kernel/timer.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/timer.c b/kernel/timer.c
index aa8b964..0fce618 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1197,7 +1197,7 @@ static unsigned long __next_timer_interrupt(struct tvec_base *base)
 {
 	unsigned long timer_jiffies = base->timer_jiffies;
 	unsigned long expires = timer_jiffies + NEXT_TIMER_MAX_DELTA;
-	int index, slot, array, found = 0;
+	int index, slot, array;
 	struct timer_list *nte;
 	struct tvec *varray[4];
 
@@ -1208,7 +1208,6 @@ static unsigned long __next_timer_interrupt(struct tvec_base *base)
 			if (tbase_get_deferrable(nte->base))
 				continue;
 
-			found = 1;
 			expires = nte->expires;
 			/* Look at the cascade bucket(s)? */
 			if (!index || slot < index)
@@ -1232,6 +1231,7 @@ cascade:
 
 	for (array = 0; array < 4; array++) {
 		struct tvec *varp = varray[array];
+		bool found = false;
 
 		index = slot = timer_jiffies & TVN_MASK;
 		do {
@@ -1239,7 +1239,7 @@ cascade:
 				if (tbase_get_deferrable(nte->base))
 					continue;
 
-				found = 1;
+				found = true;
 				if (time_before(nte->expires, expires))
 					expires = nte->expires;
 			}
-- 
1.7.7.6
--
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