Messages in this thread | | | Date | Fri, 22 Feb 2008 15:59:16 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [PATCH] Document huge memory/cache overhead of memory controller in Kconfig |
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On Thu, 21 Feb 2008 16:33:33 +0530 Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> > Another issue is that it will slightly increase TLB/cache > > cost of the memory controller, but I think that would be a fair > > trade off for it being zero cost when disabled but compiled > > in. > > > > Doing it with vmalloc should be easy enough. I can do such > > a patch later unless someone beats me to it... > > > > I'll get to it, but I have too many things on my plate at the moment. KAMEZAWA > also wanted to look at it. I looked through some vmalloc() internals yesterday > and I am worried about allocating all the memory on a single node in a NUMA > system and changing VMALLOC_XXXX on every architecture to provide more vmalloc > space. I might be missing something obvious. >
I'll post a series of patch to do that later (it's under debug now...) I'm glad if people (including you) look it and give me advices.
Regards, -Kame
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