Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

[WANG Chao]

Hi, Davidlohr

On 01/21/15 at 11:46pm, Davidlohr Bueso wrote:
> On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote:
> > Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the
> > number of slots vma cache has for each thread. Range is chosen 0-4 (1-16
> > slots) to consider both overhead and performance penalty. Default is 2
> > (4 slots) as it originally is, which provides good enough balance.
> > 
> 
> Nack. I don't feel comfortable making scalability features of core code
> configurable.

Out of respect, is this a general rule not making scalability features
of core code configurable?

Thanks
WANG Chao
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