Messages in this thread | | | Date | Thu, 14 Oct 2010 15:09:13 +0300 | Subject | Re: [RFC][PATCH 1/3] contigous big page allocator | From | Felipe Contreras <> |
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On Thu, Oct 14, 2010 at 10:07 AM, FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote: > On Wed, 13 Oct 2010 09:01:43 +0200 > Andi Kleen <andi@firstfloor.org> wrote: > >> KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> writes: >> > >> > What this wants to do: >> > allocates a contiguous chunk of pages larger than MAX_ORDER. >> > for device drivers (camera? etc..) >> >> I think to really move forward you need a concrete use case >> actually implemented in tree. > > As already pointed out, some embeded drivers need physcailly > contignous memory. Currenlty, they use hacky tricks (e.g. playing with > the boot memory allocators). There are several proposals for this like > adding a new kernel memory allocator (from samsung). > > It's ideal if the memory allocator can handle this, I think.
Not only contiguous, but sometimes also coherent.
-- Felipe Contreras -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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