Re: [PATCH -mm] clean up duplicated alloc/free_thread_info

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From: FUJITA Tomonori

Subject: Re: [PATCH -mm] clean up duplicated alloc/free_thread_info

Date: Tuesday, June 3, 2008 - 3:58 pm

On Tue, 3 Jun 2008 16:42:25 +1000
Paul Mackerras <paulus@samba.org> wrote:

quoted text> Pekka Enberg writes:
> 
> > Yeah, I too have wondered why some architectures use kmalloc() whereas
> > others use the page allocator. Is THREAD_SIZE significantly smaller
> > than PAGE_SIZE for those?
> 
> 64-bit powerpc uses 16k kernel stacks and either 4k or 64k page size.
> If the page size is 64k then we don't want to allocate a whole page
> for a kernel stack.

On powerpc, the patch defines __HAVE_ARCH_THREAD_INFO_ALLOCATOR on the
THREAD_SHIFT < PAGE_SHIFT case so it doesn't change anything.
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Messages in current thread:

[PATCH -mm] clean up duplicated alloc/free_thread_info, FUJITA Tomonori, (Mon Jun 2, 10:02 pm)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, Pekka Enberg, (Mon Jun 2, 11:06 pm)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, Paul Mackerras, (Mon Jun 2, 11:42 pm)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, Russell King, (Tue Jun 3, 1:22 am)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, David Howells, (Tue Jun 3, 2:14 am)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, Haavard Skinnemoen, (Tue Jun 3, 3:31 am)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, FUJITA Tomonori, (Tue Jun 3, 3:58 pm)

Re: [PATCH -mm] clean up duplicated alloc/free_thread_info, Haavard Skinnemoen, (Wed Jun 4, 1:46 am)


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