From mboxrd@z Thu Jan 1 00:00:00 1970 From: sboyd@codeaurora.org (Stephen Boyd) Date: Mon, 13 Jun 2011 20:24:27 -0700 Subject: Duration of mdelay and udelay depends on MPU frequency in SMP In-Reply-To: References: <4DCB8158.8060507@ti.com> Message-ID: <4DF6D46B.90806@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 06/10/2011 03:19 PM, Menon, Nishanth wrote: > On Thu, May 12, 2011 at 01:42, Santosh Shilimkar > 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.