From: Ingo Molnar <mingo@elte.hu>
To: Oleg Nesterov <oleg@tv-sign.ru>
Cc: linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
Christoph Lameter <christoph@lameter.com>,
"Chen, Kenneth W" <kenneth.w.chen@intel.com>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [RFC][PATCH] timers fixes/improvements
Date: Fri, 1 Apr 2005 15:07:13 +0200 [thread overview]
Message-ID: <20050401130713.GA3802@elte.hu> (raw)
In-Reply-To: <424D37B2.2CE24C67@tv-sign.ru>
* Oleg Nesterov <oleg@tv-sign.ru> wrote:
> struct timer_list {
> ...
> timer_base_t *_base;
> };
namespace cleanliness: i'd suggest s/_base/base.
another detail:
> int __mod_timer(struct timer_list *timer, unsigned long expires)
[...]
> /* Ensure the timer is serialized. */
> if (base != &new_base->t_base
> && base->running_timer == timer)
> goto unlock;
> unlock:
> spin_unlock_irqrestore(&base->lock, flags);
> } while (ret < 0);
so we keep looping in __mod_timer() when the timer is running? Couldnt
this be a performance hit?
Ingo
next prev parent reply other threads:[~2005-04-01 13:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-01 11:57 [RFC][PATCH] timers fixes/improvements Oleg Nesterov
2005-04-01 11:59 ` Oleg Nesterov
2005-04-01 13:07 ` Ingo Molnar [this message]
2005-04-01 13:52 ` Oleg Nesterov
2005-04-01 12:58 ` Ingo Molnar
2005-04-01 16:08 ` Linus Torvalds
2005-04-01 18:32 ` Andrew Morton
2005-04-01 18:41 ` Christoph Lameter
2005-04-01 18:44 ` Chen, Kenneth W
2005-04-02 9:22 ` Oleg Nesterov
2005-05-09 20:35 ` Christoph Lameter
2005-05-09 21:42 ` Andrew Morton
2005-05-09 21:51 ` Christoph Lameter
2005-05-10 10:23 ` Oleg Nesterov
2005-05-10 19:15 ` Christoph Lameter
2005-05-10 21:48 ` George Anzinger
2005-05-11 10:18 ` Oleg Nesterov
2005-05-11 15:12 ` Christoph Lameter
2005-05-13 22:36 ` Greg KH
[not found] ` <20050510.125301.59655362.davem@davemloft.net>
2005-05-11 15:06 ` Oleg Nesterov
2005-05-12 23:36 ` Ganesh Venkatesan
2005-05-09 23:10 ` Christoph Lameter
2005-04-02 10:07 ` Andrew Morton
2005-04-02 11:02 ` Oleg Nesterov
2005-04-02 14:58 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2005-05-17 15:38 Sy, Dely L
2005-05-17 15:50 ` Greg KH
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