Re: [RFC local_t removal V1 0/4] Remove local_t

[Christoph Lameter]

On Tue, 5 Jan 2010, Mathieu Desnoyers wrote:

> > Volatile is discouraged as far as I can tell.
>
> If you want to ensure that a simple variable assignment or read
> (local_set, local_read) are not performed piecewise by the compiler
> which can cause odd effects when shared with interrupt handlers, this
> will however be necessary.

Piecewise? Assignment of scalars or a pointer is an atomic operation by
default. Lots of things will break if that is not true.
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