linux/arch/parisc
Mel Gorman dd1a239f6f mm: have zonelist contains structs with both a zone pointer and zone_idx
Filtering zonelists requires very frequent use of zone_idx().  This is costly
as it involves a lookup of another structure and a substraction operation.  As
the zone_idx is often required, it should be quickly accessible.  The node idx
could also be stored here if it was found that accessing zone->node is
significant which may be the case on workloads where nodemasks are heavily
used.

This patch introduces a struct zoneref to store a zone pointer and a zone
index.  The zonelist then consists of an array of these struct zonerefs which
are looked up as necessary.  Helpers are given for accessing the zone index as
well as the node index.

[kamezawa.hiroyu@jp.fujitsu.com: Suggested struct zoneref instead of embedding information in pointers]
[hugh@veritas.com: mm-have-zonelist: fix memcg ooms]
[hugh@veritas.com: just return do_try_to_free_pages]
[hugh@veritas.com: do_try_to_free_pages gfp_mask redundant]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Christoph Lameter <clameter@sgi.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:18 -07:00
..
configs [PARISC] move defconfig to arch/parisc/configs/ 2008-03-15 19:12:08 -07:00
hpux Introduce path_put() 2008-02-14 21:13:33 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6 2008-04-21 15:58:35 -07:00
lib Revert "[PARISC] import necessary bits of libgcc.a" 2007-12-06 09:16:29 -08:00
math-emu kbuild: fix up CFLAGS usage 2007-10-14 21:49:42 +02:00
mm mm: have zonelist contains structs with both a zone pointer and zone_idx 2008-04-28 08:58:18 -07:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
defpalo.conf Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
install.sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig ide: introduce HAVE_IDE 2008-02-09 10:46:40 +01:00
Kconfig.debug alpha/parisc: remove config variable DEBUG_RWLOCK 2008-02-06 10:41:03 -08:00
Makefile [PARISC] move defconfig to arch/parisc/configs/ 2008-03-15 19:12:08 -07:00
nm Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00