From: Scott McNutt <smcnutt@psyent.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] Review of U-Boot timer API
Date: Wed, 25 May 2011 09:08:39 -0400 [thread overview]
Message-ID: <4DDCFF57.1080005@psyent.com> (raw)
In-Reply-To: <4DDCF957.4050902@gmail.com>
Graeme Russ wrote:
> Hi Scott,
>
> On 25/05/11 22:36, Scott McNutt wrote:
>> Graeme Russ wrote:
>>> OK, let's wind back - My original suggestion made no claim towards changing
>>> what the API is used for, or how it looks to those who use it (for all
>>> practical intents and purposes). I suggested:
>>> - Removing set_timer() and reset_timer()
>>> - Implement get_timer() as a platform independent function
>> Why do you suggest removing set_timer() and reset_timer() ?
>>
>
> Because if the timer API is done right, they are not needed
To continue the wind back ...
In several implementations, reset_timer() actually reloads
or re-initializes the hardware timer. This has the effect of
synchronizing get_timer() calls with subsequent interrupts.
This prevents the early timeouts if the implementer chooses
to use an interrupt rate less than 1 ms.
So my original question was, how do we address this issue?
--Scott
next prev parent reply other threads:[~2011-05-25 13:08 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-21 12:38 [U-Boot] [RFC] Review of U-Boot timer API Graeme Russ
[not found] ` <4DD7DB64.70605@comcast.net>
2011-05-22 0:06 ` Graeme Russ
2011-05-22 0:43 ` J. William Campbell
2011-05-22 4:26 ` Reinhard Meyer
2011-05-22 6:23 ` Graeme Russ
2011-05-22 7:21 ` J. William Campbell
2011-05-22 7:44 ` Graeme Russ
2011-05-22 8:15 ` Reinhard Meyer
2011-05-23 0:02 ` Graeme Russ
2011-05-23 0:20 ` J. William Campbell
2011-05-23 0:14 ` J. William Campbell
2011-05-23 1:00 ` Graeme Russ
[not found] ` <4DD9B608.7080307@comcast.net>
2011-05-23 1:42 ` Graeme Russ
2011-05-23 5:02 ` J. William Campbell
2011-05-23 5:25 ` Graeme Russ
2011-05-23 6:29 ` Albert ARIBAUD
2011-05-23 10:53 ` Graeme Russ
2011-05-23 16:22 ` J. William Campbell
2011-05-23 12:09 ` Wolfgang Denk
2011-05-23 12:29 ` Graeme Russ
2011-05-23 13:19 ` Wolfgang Denk
2011-05-23 17:30 ` J. William Campbell
2011-05-23 18:24 ` Albert ARIBAUD
2011-05-23 19:18 ` Wolfgang Denk
2011-05-23 18:27 ` J. William Campbell
2011-05-23 19:33 ` Wolfgang Denk
2011-05-23 20:26 ` J. William Campbell
2011-05-23 21:51 ` Wolfgang Denk
2011-05-23 20:48 ` Graeme Russ
2011-05-23 3:26 ` Reinhard Meyer
2011-05-23 5:20 ` J. William Campbell
2011-05-22 6:57 ` J. William Campbell
2011-05-23 12:13 ` Wolfgang Denk
2011-05-24 3:42 ` Mike Frysinger
2011-05-24 4:07 ` Graeme Russ
2011-05-24 4:24 ` Mike Frysinger
2011-05-24 4:35 ` Graeme Russ
2011-05-24 5:31 ` Reinhard Meyer
2011-05-24 5:43 ` Graeme Russ
2011-05-24 6:11 ` Albert ARIBAUD
2011-05-24 7:10 ` Graeme Russ
2011-05-24 14:15 ` Wolfgang Denk
2011-05-24 14:12 ` Wolfgang Denk
2011-05-24 15:23 ` J. William Campbell
2011-05-24 19:09 ` Wolfgang Denk
2011-05-24 13:29 ` Scott McNutt
2011-05-24 14:19 ` Wolfgang Denk
2011-05-24 16:51 ` Graeme Russ
2011-05-24 18:59 ` J. William Campbell
2011-05-24 19:31 ` Wolfgang Denk
2011-05-24 19:19 ` Wolfgang Denk
2011-05-24 22:32 ` J. William Campbell
2011-05-25 5:17 ` Wolfgang Denk
2011-05-25 16:50 ` J. William Campbell
2011-05-25 19:56 ` Wolfgang Denk
2011-05-25 0:17 ` Graeme Russ
2011-05-25 2:53 ` J. William Campbell
2011-05-25 3:21 ` Graeme Russ
2011-05-25 5:28 ` Wolfgang Denk
2011-05-25 6:06 ` Graeme Russ
2011-05-25 8:08 ` Wolfgang Denk
2011-05-25 8:38 ` Graeme Russ
2011-05-25 11:37 ` Wolfgang Denk
2011-05-25 11:52 ` Graeme Russ
2011-05-25 12:26 ` Wolfgang Denk
2011-05-25 12:42 ` Graeme Russ
2011-05-25 12:59 ` Wolfgang Denk
2011-05-25 13:14 ` Graeme Russ
2011-05-25 13:38 ` Wolfgang Denk
2011-05-25 21:11 ` Graeme Russ
2011-05-25 21:16 ` Wolfgang Denk
2011-05-25 23:13 ` Graeme Russ
2011-05-26 0:15 ` J. William Campbell
2011-05-26 0:33 ` Graeme Russ
2011-05-26 4:19 ` Reinhard Meyer
2011-05-26 4:40 ` Graeme Russ
2011-05-26 5:03 ` J. William Campbell
2011-05-26 5:16 ` Wolfgang Denk
2011-05-26 5:25 ` Graeme Russ
2011-05-26 5:55 ` Albert ARIBAUD
2011-05-26 6:18 ` Graeme Russ
2011-05-26 6:36 ` Reinhard Meyer
2011-05-26 8:48 ` Wolfgang Denk
2011-05-26 9:02 ` Graeme Russ
2011-05-26 4:54 ` J. William Campbell
2011-05-25 5:25 ` Wolfgang Denk
2011-05-25 6:02 ` Graeme Russ
2011-05-25 8:06 ` Wolfgang Denk
2011-05-25 8:26 ` Graeme Russ
2011-05-25 11:32 ` Wolfgang Denk
2011-05-25 11:53 ` Graeme Russ
2011-05-25 12:27 ` Wolfgang Denk
2011-05-25 12:36 ` Scott McNutt
2011-05-25 12:43 ` Graeme Russ
2011-05-25 13:08 ` Scott McNutt [this message]
2011-05-25 13:16 ` Graeme Russ
2011-05-25 13:46 ` Scott McNutt
2011-05-25 14:21 ` Graeme Russ
2011-05-25 19:46 ` Wolfgang Denk
2011-05-25 20:40 ` J. William Campbell
2011-05-25 20:48 ` Wolfgang Denk
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