[PATCH v2 03/12] composite: Only register the block handler when it is required

[Daniel Stone]

On Thu, Dec 30, 2010 at 07:19:34PM +0200, Pauli wrote:
> From: Pauli Nieminen <ext-pauli.nieminen at nokia.com>
> 
> Even calling block handler that doesn't do much is costly in arm. It
> takes a few microseconds each time which adds up to relative high CPU
> time because it is done 500+ times per second.
> 
> Simple optimization is to register the block handler only when it is
> required.
> 
> Signed-off-by: Pauli Nieminen <ext-pauli.nieminen at nokia.com>

Reviewed-by: Daniel Stone <daniel at fooishbar.org>
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