From: Stephen Boyd <sboyd@codeaurora.org>
To: "Menon, Nishanth" <nm@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>,
Saquib <saquib.herman@gmail.com>,
linux-omap <linux-omap@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>
Subject: Re: Duration of mdelay and udelay depends on MPU frequency in SMP
Date: Mon, 13 Jun 2011 20:24:27 -0700 [thread overview]
Message-ID: <4DF6D46B.90806@codeaurora.org> (raw)
In-Reply-To: <BANLkTin1Tmjwjz8+J22Qi=cwu34Qp-B-wQ@mail.gmail.com>
On 06/10/2011 03:19 PM, Menon, Nishanth wrote:
> On Thu, May 12, 2011 at 01:42, Santosh Shilimkar
> <santosh.shilimkar@ti.com> wrote:
>>
>> It's a well known problem if the udelay() is based of global lpj.
>> You can read more here [1]
>>
>> Regards
>> Santosh
>> [1] http://eeek.borgchat.net/lists/arm-kernel/msg120702.html
> I am curious about this topic now.
> Searching Russel's patchworks for this:
> http://www.arm.linux.org.uk/developer/patches/search.php?summary=udelay
> I see nothing queued. What is the recommendation for udelay?
The patches are sitting in Russell's patch tracker, waiting for him to
accept/reject them.
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6874/1
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6875/1
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6873/1
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
WARNING: multiple messages have this Message-ID (diff)
From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: Duration of mdelay and udelay depends on MPU frequency in SMP
Date: Mon, 13 Jun 2011 20:24:27 -0700 [thread overview]
Message-ID: <4DF6D46B.90806@codeaurora.org> (raw)
In-Reply-To: <BANLkTin1Tmjwjz8+J22Qi=cwu34Qp-B-wQ@mail.gmail.com>
On 06/10/2011 03:19 PM, Menon, Nishanth wrote:
> On Thu, May 12, 2011 at 01:42, Santosh Shilimkar
> <santosh.shilimkar@ti.com> wrote:
>>
>> It's a well known problem if the udelay() is based of global lpj.
>> You can read more here [1]
>>
>> Regards
>> Santosh
>> [1] http://eeek.borgchat.net/lists/arm-kernel/msg120702.html
> I am curious about this topic now.
> Searching Russel's patchworks for this:
> http://www.arm.linux.org.uk/developer/patches/search.php?summary=udelay
> I see nothing queued. What is the recommendation for udelay?
The patches are sitting in Russell's patch tracker, waiting for him to
accept/reject them.
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6874/1
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6875/1
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=6873/1
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-06-14 3:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-05 6:49 Duration of mdelay and udelay depends on MPU frequency in SMP Saquib
2011-05-05 6:53 ` Saquib
2011-05-12 6:42 ` Santosh Shilimkar
2011-06-10 22:19 ` Menon, Nishanth
2011-06-10 22:19 ` Menon, Nishanth
2011-06-14 3:24 ` Stephen Boyd [this message]
2011-06-14 3:24 ` Stephen Boyd
2011-06-14 4:19 ` Menon, Nishanth
2011-06-14 4:19 ` Menon, Nishanth
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