linux-kernel - Re: asm/atomic.h and user code

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Date:	Sat, 03 Mar 2007 20:09:47 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	"remi.chateauneu@...il.com" <remi.chateauneu@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: asm/atomic.h and user code

remi.chateauneu@...il.com wrote:
> Is it me or it seems it is not possible anymore to use asm/atomic.h in
> non-kernel code ? Thanks.

The atomic functions, as with any internal kernel data structures, were 
never intended to be used in userspace. In particular, the atomic 
functions depend on config settings like CONFIG_SMP in order to actually 
be atomic, and that's not guaranteed in userspace.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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