Re: [RFC,PATCH] use nonatomic bitops for cpumask_t

[Manfred Spraul]

Manfred Spraul wrote:

> Hi,
>
> I'm checking for callers that rely on the atomicity of the bitops, but 
> so far everyone has it's own locks.

One exception is the x86 tlb flush code, thus my patch is wrong. We 
could add nonatomic __cpu_set and __cpu_clear bitops, but I'm not sure 
if it's worth the effort, cpu bitops aren't that common 
(kernel/rcupdate.c and balance_node could use the __ versions).

Sorry for the noise (and don't check who wrote the x86 tlb flush code)
--
   Manfred

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