atomic operations under linux

[Shachar Shemesh]

Gilboa Davara wrote:
> On Wed, 2009-12-09 at 20:04 +0200, Raz wrote:
>   
>> Do not use inline kernel atomic_t operation, you will violate GPL.
>> Use gcc builtins. If you want information please refer to:
>> http://sos-linux.svn.sourceforge.net/viewvc/sos-linux/offsched/Linux-Debug/
>> and download linux-debug.pdf . You will few words on atomicity in user
>> space in linux.
>> Please execuse for bad editing, the paper is not complete.
>>
>> raz
>>     
>
> Thanks.
> While I was aware of the derived problem - I neglected to point it out.
> Thanks.
>
> At least in my case (and partially due to the derived work problem), I
> simply wrote my own set of assembly functions that worked the same under
> both Linux/BSD and Windows (under both user mode and kernel mode).
>
> - Gilboa
>   
I might be missing something really basic, but may I ask "why"? What 
would you want to achieve that would require you to use the "get and 
set" (or "test and set", or whatever) in user space?

Shachar

-- 
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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