linux-kernel - Re: mechanism to syncronise device access from user and kernel

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Message-ID: <20081206124031.GB4821@srcf.ucam.org>
Date:	Sat, 6 Dec 2008 12:40:31 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Parav Pandit <paravpandit@...oo.com>
Cc:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: mechanism to syncronise device access from user and kernel

On Fri, Dec 05, 2008 at 10:28:27AM -0800, Parav Pandit wrote:
> Hi,
> 
> I have a device whose registers are accessed by driver as well as user space application via mmap() area.
> 
> How to synchronize the access (avoid race condition) between user space driver and kernel mode driver, in single CPU and multi-CPU systems?

Rewrite userspace to use the kernel driver?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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