Re: [PATCH] slub: reduce overhead of slub_debug

From: Matt Mackall
Date: Thu Jul 07 2011 - 14:30:54 EST


On Thu, 2011-07-07 at 13:17 -0500, Christoph Lameter wrote:
> On Thu, 7 Jul 2011, Pekka Enberg wrote:
>
> > Looks good to me. Christoph, David, ?
>
> The reason debug code is there is because it is useless overhead typically
> not needed. There is no point in optimizing the code that is not run in
> production environments unless there are gross performance issues that
> make debugging difficult. A performance patch for debugging would have to
> cause significant performance improvements. This patch does not do that
> nor was there such an issue to be addressed in the first place.

Deja vu.

--
Mathematics is the supreme nostalgia of our time.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/