From: Thomas Gleixner <tglx@linutronix.de>
To: Yong Zhang <yong.zhang0@gmail.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>,
LKML <linux-kernel@vger.kernel.org>,
Arjan van de Ven <arjan@infradead.org>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
David Miller <davem@davemloft.net>,
netdev@vger.kernel.org
Subject: Re: [PATCH] timers: consider slack value in mod_timer()
Date: Wed, 25 May 2011 12:57:28 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.02.1105251256270.3078@ionos> (raw)
In-Reply-To: <alpine.LFD.2.02.1105251126590.3078@ionos>
On Wed, 25 May 2011, Thomas Gleixner wrote:
> On Wed, 25 May 2011, Yong Zhang wrote:
> } else {
> - unsigned long now = jiffies;
> + long delta = expires - jiffies;
> +
> + if (delta < 256)
> + return expires;
>
> - /* No slack, if already expired else auto slack 0.4% */
> - if (time_after(expires, now))
> - expires_limit = expires + (expires - now)/256;
> + expires_limit = expires + (expires - now)/256;
That should be
+ expires_limit = expires + delta / 256;
of course.
next prev parent reply other threads:[~2011-05-25 10:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-21 10:58 Sebastian Andrzej Siewior
2011-05-24 7:54 ` Yong Zhang
2011-05-24 12:13 ` Sebastian Andrzej Siewior
2011-05-25 8:35 ` Yong Zhang
2011-05-25 10:17 ` Thomas Gleixner
2011-05-25 10:57 ` Thomas Gleixner [this message]
2011-05-26 6:19 ` Yong Zhang
2011-06-03 13:06 ` [tip:timers/urgent] timers: Consider " tip-bot for Sebastian Andrzej Siewior
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