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xen-devel
[Xen-devel] RE: [PATCH 4/4] x86/HPET: adjust types
Jan Beulich wrote on 2011-03-11:
> 'unsigned int' is better suited as an array index on x86-64.
>
> 'u32' produces better code than 'unsigned long' on x86-64, so use the
> former for storing 32-bit values read from the hardware.
>
> this_cpu() uses an implicit smp_processor_id(), and hence using
> per_cpu() when the result of smp_processor_id() is already available
> is more efficient.
>
> Fold one case of cpu_isset()+cpu_clear() into cpu_test_and_clear().
>
> Drop the unused return value of evt_do_broadcast().
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Acked-by: Wei Gang <gang.wei@xxxxxxxxx>
Jimmy
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