user/sven/linux.git/include/asm-generic/page.h, branch v3.2

include/asm-generic/page.h: calculate virt_to_page and page_to_virt via predefined macro

2011-11-01T00:30:48Z

On NOMMU architectures, if physical memory doesn't start from 0, ARCH_PFN_OFFSET is defined to generate page index in mem_map array. Because virtual address is equal to physical address, PAGE_OFFSET is always 0. virt_to_page and page_to_virt should not index page by PAGE_OFFSET directly. Signed-off-by: Sonic Zhang Cc: Greg Ungerer Cc: Geert Uytterhoeven Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

asm-generic: add generic NOMMU versions of some headers

2009-06-11T19:02:50Z

Memory management in generic is highly architecture specific, but on NOMMU architectures, it is mostly trivial, so just add a default implementation in asm-generic that applies to all NOMMU architectures. The two files cache.h and cacheflush.h can possibly also be used by architectures that have an MMU but never require flushing the cache or have cache lines larger than 32 bytes. Signed-off-by: Remis Lima Baima Signed-off-by: Arnd Bergmann

asm-generic: rename page.h and uaccess.h

2009-06-11T19:02:17Z

The current asm-generic/page.h only contains the get_order function, and asm-generic/uaccess.h only implements unaligned accesses. This renames the file to getorder.h and uaccess-unaligned.h to make room for new page.h and uaccess.h file that will be usable by all simple (e.g. nommu) architectures. Signed-off-by: Remis Lima Baima Signed-off-by: Arnd Bergmann

remove KERNEL tests of unexported headers under asm-generic/

2008-04-30T15:29:54Z

Signed-off-by: Robert P. J. Day Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Revert "[PATCH] LOG2: Alter get_order() so that it can make use of ilog2() on a constant"

2007-03-07T03:38:01Z

This reverts commit 39d61db0edb34d60b83c5e0d62d0e906578cc707. The commit was buggy in multiple ways: - the conversion to ilog2() was incorrect to begin with - it tested the wrong #defines, so on all architectures but FRV you'd never see the bug except for constant arguments. - the new "get_order()" macro used its arguments multiple times, and didn't even parenthesize them properly - despite the comments, it was not true that you could use it for constant initializers, since not all architectures even use the generic page.h header file. All of the problems are individually fixable, but it all boils down to: better just revert it, and re-do it from scratch. Cc: David Howells Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] LOG2: Alter get_order() so that it can make use of ilog2() on a constant

2006-12-08T16:28:51Z

Alter get_order() so that it can make use of ilog2() on a constant to produce a constant value, retaining the ability for an arch to override it in the non-const case. Signed-off-by: David Howells Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] mm: consolidate get_order

2005-09-05T07:05:39Z

Someone mentioned that almost all the architectures used basically the same implementation of get_order. This patch consolidates them into asm-generic/page.h and includes that in the appropriate places. The exceptions are ia64 and ppc which have their own (presumably optimised) versions. Signed-off-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds