• KAMEZAWA Hiroyuki's avatar
    [PATCH] unify pfn_to_page: generic functions · a117e66e
    KAMEZAWA Hiroyuki authored
    There are 3 memory models, FLATMEM, DISCONTIGMEM, SPARSEMEM.
    Each arch has its own page_to_pfn(), pfn_to_page() for each models.
    But most of them can use the same arithmetic.
    
    This patch adds asm-generic/memory_model.h, which includes generic
    page_to_pfn(), pfn_to_page() definitions for each memory model.
    
    When CONFIG_OUT_OF_LINE_PFN_TO_PAGE=y, out-of-line functions are
    used instead of macro. This is enabled by some archs and  reduces
    text size.
    Signed-off-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Cc: Hugh Dickins <hugh@veritas.com>
    Cc: Andi Kleen <ak@muc.de>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Richard Henderson <rth@twiddle.net>
    Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
    Cc: Russell King <rmk@arm.linux.org.uk>
    Cc: Ian Molton <spyro@f2s.com>
    Cc: Mikael Starvik <starvik@axis.com>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Kyle McMartin <kyle@mcmartin.ca>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Paul Mundt <lethal@linux-sh.org>
    Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
    Cc: Richard Curnow <rc@rc0.org.uk>
    Cc: William Lee Irwin III <wli@holomorphy.com>
    Cc: "David S. Miller" <davem@davemloft.net>
    Cc: Jeff Dike <jdike@addtoit.com>
    Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
    Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
    Cc: Chris Zankel <chris@zankel.net>
    Cc: "Luck, Tony" <tony.luck@intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    a117e66e
memory_model.h 1.92 KB