linux.git/mm/vmstat.c, branch v2.6.29

cpumask: convert mm/

2008-12-31T23:42:29+00:00

Impact: Use new API

Convert kernel mm functions to use struct cpumask.

We skip include/linux/percpu.h and mm/allocpercpu.c, which are in flux.

Signed-off-by: Rusty Russell 
Signed-off-by: Mike Travis 
Reviewed-by: Christoph Lameter

proc: move /proc/zoneinfo boilerplate to mm/vmstat.c

2008-10-23T13:35:04+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Christoph Lameter

proc: move /proc/vmstat boilerplate to mm/vmstat.c

2008-10-23T13:12:51+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Christoph Lameter

proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c

2008-10-23T12:33:29+00:00

Signed-off-by: Alexey Dobriyan

proc: move /proc/buddyinfo boilerplate to mm/vmstat.c

2008-10-23T12:12:04+00:00

Signed-off-by: Alexey Dobriyan

mlock: count attempts to free mlocked page

2008-10-20T15:52:31+00:00

Allow free of mlock()ed pages.  This shouldn't happen, but during
developement, it occasionally did.

This patch allows us to survive that condition, while keeping the
statistics and events correct for debug.

Signed-off-by: Lee Schermerhorn 
Signed-off-by: Rik van Riel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vmstat: mlocked pages statistics

2008-10-20T15:52:31+00:00

Add NR_MLOCK zone page state, which provides a (conservative) count of
mlocked pages (actually, the number of mlocked pages moved off the LRU).

Reworked by lts to fit in with the modified mlock page support in the
Reclaim Scalability series.

[kosaki.motohiro@jp.fujitsu.com: fix incorrect Mlocked field of /proc/meminfo]
[lee.schermerhorn@hp.com: mlocked-pages: add event counting with statistics]
Signed-off-by: Nick Piggin 
Signed-off-by: Lee Schermerhorn 
Signed-off-by: Rik van Riel 
Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Unevictable LRU Page Statistics

2008-10-20T15:50:26+00:00

Report unevictable pages per zone and system wide.

Kosaki Motohiro added support for memory controller unevictable
statistics.

[riel@redhat.com: fix printk in show_free_areas()]
[akpm@linux-foundation.org: fix units in /proc/vmstats]
Signed-off-by: Lee Schermerhorn 
Signed-off-by: Rik van Riel 
Signed-off-by: KOSAKI Motohiro 
Debugged-by: Hiroshi Shimamoto 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

unevictable lru: add event counting with statistics

2008-10-20T15:50:26+00:00

Fix to unevictable-lru-page-statistics.patch

Add unevictable lru infrastructure vm events to the statistics patch.
Rename the "NORECL_" and "noreclaim_" symbols and text strings to
"UNEVICTABLE_" and "unevictable_", respectively.

Currently, both the infrastructure and the mlocked pages event are
added by a single patch later in the series.  This makes it difficult
to add or rework the incremental patches.  The events actually "belong"
with the stats, so pull them up to here.

Also, restore the event counting to putback_lru_page().  This was removed
from previous patch in series where it was "misplaced".  The actual events
weren't defined that early.

Signed-off-by: Lee Schermerhorn 
Cc: Rik van Riel 
Reviewed-by: KOSAKI Motohiro 
Cc: KAMEZAWA Hiroyuki 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vmscan: second chance replacement for anonymous pages

2008-10-20T15:50:25+00:00

We avoid evicting and scanning anonymous pages for the most part, but
under some workloads we can end up with most of memory filled with
anonymous pages.  At that point, we suddenly need to clear the referenced
bits on all of memory, which can take ages on very large memory systems.

We can reduce the maximum number of pages that need to be scanned by not
taking the referenced state into account when deactivating an anonymous
page.  After all, every anonymous page starts out referenced, so why
check?

If an anonymous page gets referenced again before it reaches the end of
the inactive list, we move it back to the active list.

To keep the maximum amount of necessary work reasonable, we scale the
active to inactive ratio with the size of memory, using the formula
active:inactive ratio = sqrt(memory in GB * 10).

Kswapd CPU use now seems to scale by the amount of pageout bandwidth,
instead of by the amount of memory present in the system.

[kamezawa.hiroyu@jp.fujitsu.com: fix OOM with memcg]
[kamezawa.hiroyu@jp.fujitsu.com: memcg: lru scan fix]
Signed-off-by: Rik van Riel 
Signed-off-by: KOSAKI Motohiro 
Signed-off-by: KAMEZAWA Hiroyuki 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds