Re: [PATCH 0/2] jump label: 2.6.38 updates

[David Miller]

From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Date: Mon, 14 Feb 2011 17:29:58 -0500

> * H. Peter Anvin (hpa@xxxxxxxxx) wrote:
>> On 02/14/2011 02:20 PM, Steven Rostedt wrote:
>> > 
>> > Ideally, we would like a single atomic_read() but due to these wacky
>> > archs, it may not be possible.
>> > 
>> 
>> #ifdef ARCH_ATOMIC_READ_SUCKS_EGGS?
>> 
>> 	-hpa
> 
> lol :)
> 
> Hrm, I wonder if it might cause problems with combinations of "cmpxchg"
> and "read" performed on a variable (without using atomic.h).

We do that everywhere, it has to work.
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