* Paul Mackerras <[EMAIL PROTECTED]> wrote:
> There are several instances of per_cpu(foo, raw_smp_processor_id()),
> which is semantically equivalent to __get_cpu_var(foo) but without the
> warning that smp_processor_id() can give if CONFIG_DEBUG_PREEMPT is
> enabled. For those architectures with optimized per-cpu
> implementations, namely ia64, powerpc, s390, sparc64 and x86_64,
> per_cpu() turns into more and slower code than __get_cpu_var(), so it
> would be preferable to use __get_cpu_var on those platforms.
>
> This defines a __raw_get_cpu_var(x) macro which turns into per_cpu(x,
> raw_smp_processor_id()) on architectures that use the generic per-cpu
> implementation, and turns into __get_cpu_var(x) on the architectures
> that have an optimized per-cpu implementation.
>
> Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
i made the original raw_smp_processor_id() changes and i never liked the
per_cpu() open-coding it introduced. Your patch solves this problem
nicely.
Acked-by: Ingo Molnar <[EMAIL PROTECTED]>
Ingo
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