Messages in this thread | | | Date | Fri, 22 Feb 2008 12:36:11 +0530 | From | Balbir Singh <> | Subject | Re: [PATCH] Document huge memory/cache overhead of memory controller in Kconfig |
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KAMEZAWA Hiroyuki wrote: > 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. >
Thank you so much for your help. I'll definitely look at it and review/test them.
-- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL
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