From: Daniel Walker <dwalker@mvista.com>
To: mingo@elte.hu
Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Subject: [PATCH -rt 3/9] Fix jiffies wrap issue in update_times
Date: Sun, 29 Jul 2007 19:45:37 -0700 [thread overview]
Message-ID: <20070730024719.502748134@mvista.com> (raw)
In-Reply-To: 20070730024534.369897977@mvista.com
[-- Attachment #1: initialize-last_tick-in-calc_load.patch --]
[-- Type: text/plain, Size: 775 bytes --]
In prior -rt verisons the last_tick value was called wall_jiffies
and was initialized in this same way as below. If this value isn't
initialized the calc_load function gets skewed for several minutes
right after boot up. Skewed meaning always zero.
Signed-off-by: Daniel Walker <dwalker@mvista.com>
---
kernel/timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.22/kernel/timer.c
===================================================================
--- linux-2.6.22.orig/kernel/timer.c
+++ linux-2.6.22/kernel/timer.c
@@ -987,7 +987,7 @@ void run_local_timers(void)
*/
static inline void update_times(void)
{
- static unsigned long last_tick;
+ static unsigned long last_tick = INITIAL_JIFFIES;
unsigned long ticks, flags;
/*
--
next prev parent reply other threads:[~2007-07-30 2:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-30 2:45 [PATCH -rt 1/9] preempt rcu: check for underflow Daniel Walker
2007-07-30 2:45 ` [PATCH -rt 2/9] Dont allow non-threaded softirqs and threaded hardirqs Daniel Walker
2007-07-30 9:23 ` Ingo Molnar
2007-07-30 11:28 ` Steven Rostedt
2007-07-30 2:45 ` Daniel Walker [this message]
2007-07-30 9:25 ` [PATCH -rt 3/9] Fix jiffies wrap issue in update_times Ingo Molnar
2007-07-30 2:45 ` [PATCH -rt 4/9] ifdef raise_softirq_irqoff wakeup Daniel Walker
2007-07-30 9:27 ` Ingo Molnar
2007-07-30 15:48 ` Daniel Walker
2007-08-06 7:20 ` Ingo Molnar
2007-07-30 2:45 ` [PATCH -rt 5/9] net: fix mis-merge in qdisc_restart Daniel Walker
2007-07-30 9:30 ` Ingo Molnar
2007-07-30 2:45 ` [PATCH -rt 6/9] spinlock/rt_lock random cleanups Daniel Walker
2007-07-30 4:58 ` Ankita Garg
2007-07-30 15:48 ` Daniel Walker
2007-07-30 9:31 ` Ingo Molnar
2007-07-30 2:45 ` [PATCH -rt 7/9] introduce PICK_FUNCTION Daniel Walker
2007-07-30 9:39 ` Peter Zijlstra
2007-07-30 16:16 ` Daniel Walker
2007-07-30 2:45 ` [PATCH -rt 8/9] spinlocks/rwlocks: use PICK_FUNCTION() Daniel Walker
2007-07-30 2:45 ` [PATCH -rt 9/9] seqlocks: use PICK_FUNCTION Daniel Walker
2007-08-06 7:21 ` Ingo Molnar
2007-08-08 19:40 ` Daniel Walker
2007-07-30 5:26 ` [PATCH -rt 1/9] preempt rcu: check for underflow Paul E. McKenney
2007-07-30 9:22 ` Ingo Molnar
2007-07-30 15:48 ` Daniel Walker
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