25 May, 2011
1 commit
-
commit 2ac390370a ("writeback: add
/sys/devices/system/node//vmstat") added vmstat entry. But
strangely it only show nr_written and nr_dirtied.# cat /sys/devices/system/node/node20/vmstat
nr_written 0
nr_dirtied 0Of course, It's not adequate. With this patch, the vmstat show all vm
stastics as /proc/vmstat.# cat /sys/devices/system/node/node0/vmstat
nr_free_pages 899224
nr_inactive_anon 201
nr_active_anon 17380
nr_inactive_file 31572
nr_active_file 28277
nr_unevictable 0
nr_mlock 0
nr_anon_pages 17321
nr_mapped 8640
nr_file_pages 60107
nr_dirty 33
nr_writeback 0
nr_slab_reclaimable 6850
nr_slab_unreclaimable 7604
nr_page_table_pages 3105
nr_kernel_stack 175
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 260
nr_dirtied 1050
nr_written 938
numa_hit 962872
numa_miss 0
numa_foreign 0
numa_interleave 8617
numa_local 962872
numa_other 0
nr_anon_transparent_hugepages 0[akpm@linux-foundation.org: no externs in .c files]
Signed-off-by: KOSAKI Motohiro
Cc: Michael Rubin
Cc: Wu Fengguang
Acked-by: David Rientjes
Cc: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Feb, 2011
1 commit
-
Update the 'phys_index' property of a the memory_block struct to be
called start_section_nr, and add a end_section_nr property. The
data tracked here is the same but the updated naming is more in line
with what is stored here, namely the first and last section number
that the memory block spans.The names presented to userspace remain the same, phys_index for
start_section_nr and end_phys_index for end_section_nr, to avoid breaking
anything in userspace.This also updates the node sysfs code to be aware of the new capability for
a memory block to contain multiple memory sections and be aware of the memory
block structure name changes (start_section_nr). This requires an additional
parameter to unregister_mem_sect_under_nodes so that we know which memory
section of the memory block to unregister.Signed-off-by: Nathan Fontenot
Reviewed-by: Robin Holt
Reviewed-by: KAMEZAWA Hiroyuki
Signed-off-by: Greg Kroah-Hartman
14 Jan, 2011
1 commit
-
Add hugepage statistics to per-node sysfs meminfo
Reviewed-by: Rik van Riel
Signed-off-by: David Rientjes
Signed-off-by: Andrea Arcangeli
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Oct, 2010
1 commit
-
For NUMA node systems it is important to have visibility in memory
characteristics. Two of the /proc/vmstat values "nr_written" and
"nr_dirtied" are added here.# cat /sys/devices/system/node/node20/vmstat
nr_written 0
nr_dirtied 0Signed-off-by: Michael Rubin
Reviewed-by: Wu Fengguang
Cc: Dave Chinner
Cc: Jens Axboe
Cc: KOSAKI Motohiro
Cc: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
23 Oct, 2010
1 commit
-
Modify link_mem_sections() to pass in the previous mem_block as a hint to
locating the next mem_block. Since they are typically added in order this
results in a massive saving in time during boot of a very large system.
For example, on a 16TB x86_64 machine, it reduced the total time spent
linking all node's memory sections from 1 hour, 27 minutes to 46 seconds.Signed-off-by: Robin Holt
To: Gary Hade
To: Badari Pulavarty
To: Ingo Molnar
Reviewed-by: KAMEZAWA Hiroyuki
Signed-off-by: Greg Kroah-Hartman
10 Aug, 2010
1 commit
-
drivers/base/node.c: In function 'node_read_meminfo':
drivers/base/node.c:139: warning: the frame size of 848 bytes is
larger than 512 bytesFix it by splitting the sprintf() into three parts. It has no functional
change.Signed-off-by: KOSAKI Motohiro
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
25 May, 2010
1 commit
-
Add a per-node sysfs file called compact. When the file is written to,
each zone in that node is compacted. The intention that this would be
used by something like a job scheduler in a batch system before a job
starts so that the job can allocate the maximum number of hugepages
without significant start-up cost.Signed-off-by: Mel Gorman
Acked-by: Rik van Riel
Reviewed-by: KOSAKI Motohiro
Reviewed-by: Christoph Lameter
Reviewed-by: Minchan Kim
Reviewed-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Apr, 2010
1 commit
-
NODEMASK_ALLOC/FREE are mapped to kmalloc/free if NODES_SHIFT > 8.
Among its several users, drivers/base/node.c wasn't including slab.h
leading to build failure if NODES_SHIFT > 8. Include slab.h from
drivers/base/node.c.This isn't an ideal solution but including slab.h directly from
nodemask.h is not an option because nodemask.h gets included
everywhere. For now, make it work by including slab.h from its users.Signed-off-by: Tejun Heo
Reported-by: Ingo Molnar
30 Mar, 2010
1 commit
-
…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
19 Mar, 2010
1 commit
-
node_read_distance() has a BUILD_BUG_ON() to prevent buffer overruns when
the number of nodes printed will exceed the buffer length.Each node only needs four chars: three for distance (maximum distance is
255) and one for a seperating space or a trailing newline.Signed-off-by: David Rientjes
Cc: Ingo Molnar
Signed-off-by: Greg Kroah-Hartman
08 Mar, 2010
3 commits
-
Convert the node driver to sysdev_class attribute arrays. This
greatly cleans up the code and remove a lot of code.Saves ~150 bytes of code on x86-64.
Signed-off-by: Andi Kleen
Signed-off-by: Greg Kroah-Hartman -
Using the new attribute argument convert the node driver class
attributes to carry the node state. Then use a shared function to do
what a lot of individual functions did before.Signed-off-by: Andi Kleen
Signed-off-by: Greg Kroah-Hartman -
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.Also drivers can extend the attributes with own data fields
and use that in the low level function.Similar to sysdev_attributes and normal attributes.
This is a tree-wide sweep, converting everything in one go.
No functional changes in this patch other than passing the new
argument everywhere.Tested on x86, the non x86 parts are uncompiled.
Signed-off-by: Andi Kleen
Signed-off-by: Greg Kroah-Hartman
16 Dec, 2009
8 commits
-
Nodemasks should not be allocated on the stack for large systems (when it
is larger than 256 bytes) since there is a threat of overflow.This patch causes the unregister_mem_sect_under_nodes() nodemask to be
allocated on the stack for smaller systems and be allocated by slab for
larger systems.GFP_KERNEL is used since remove_memory_block() can block.
Cc: Gary Hade
Cc: Badari Pulavarty
Cc: Alex Chiang
Signed-off-by: David Rientjes
Cc: Greg Kroah-Hartman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
You can discover which CPUs belong to a NUMA node by examining
/sys/devices/system/node/node#/However, it's not convenient to go in the other direction, when looking at
/sys/devices/system/cpu/cpu#/Yes, you can muck about in sysfs, but adding these symlinks makes life a
lot more convenient.Signed-off-by: Alex Chiang
Acked-by: David Rientjes
Cc: Gary Hade
Cc: Badari Pulavarty
Cc: Ingo Molnar
Cc: David Rientjes
Cc: Greg KH
Cc: Randy Dunlap
Cc: David Rientjes
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
By returning early if the node is not online, we can unindent the
interesting code by two levels.No functional change.
Signed-off-by: Alex Chiang
Cc: Gary Hade
Cc: Badari Pulavarty
Cc: Ingo Molnar
Cc: David Rientjes
Cc: Greg KH
Cc: Randy Dunlap
Cc: David Rientjes
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
By returning early if the node is not online, we can unindent the
interesting code by one level.No functional change.
Signed-off-by: Alex Chiang
Cc: Gary Hade
Cc: Badari Pulavarty
Cc: Ingo Molnar
Cc: David Rientjes
Cc: Greg KH
Cc: Randy Dunlap
Cc: David Rientjes
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit c04fc586c (mm: show node to memory section relationship with
symlinks in sysfs) created symlinks from nodes to memory sections, e.g./sys/devices/system/node/node1/memory135 -> ../../memory/memory135
If you're examining the memory section though and are wondering what node
it might belong to, you can find it by grovelling around in sysfs, but
it's a little cumbersome.Add a reverse symlink for each memory section that points back to the
node to which it belongs.Signed-off-by: Alex Chiang
Cc: Gary Hade
Cc: Badari Pulavarty
Cc: Ingo Molnar
Acked-by: David Rientjes
Cc: Greg KH
Cc: Randy Dunlap
Cc: David Rientjes
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Offload the registration and unregistration of per node hstate sysfs
attributes to a worker thread rather than attempt the
allocation/attachment or detachment/freeing of the attributes in the
context of the memory hotplug handler.I don't know that this is absolutely required, but the registration can
sleep in allocations and other mem hot plug handlers do it this way. If
it turns out this is NOT required, we can drop this patch.N.B., Only tested build, boot, libhugetlbfs regression.
i.e., no memory hotplug testing.Signed-off-by: Lee Schermerhorn
Reviewed-by: Andi Kleen
Cc: KAMEZAWA Hiroyuki
Cc: Lee Schermerhorn
Cc: Mel Gorman
Cc: Randy Dunlap
Cc: Nishanth Aravamudan
Cc: David Rientjes
Cc: Adam Litke
Cc: Andy Whitcroft
Cc: Eric Whitney
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Register per node hstate attributes only for nodes with memory. As
suggested by David Rientjes.With Memory Hotplug, memory can be added to a memoryless node and a node
with memory can become memoryless. Therefore, add a memory on/off-line
notifier callback to [un]register a node's attributes on transition
to/from memoryless state.N.B., Only tested build, boot, libhugetlbfs regression.
i.e., no memory hotplug testing.Signed-off-by: Lee Schermerhorn
Reviewed-by: Andi Kleen
Acked-by: David Rientjes
Cc: KAMEZAWA Hiroyuki
Cc: Lee Schermerhorn
Cc: Mel Gorman
Cc: Randy Dunlap
Cc: Nishanth Aravamudan
Cc: Adam Litke
Cc: Andy Whitcroft
Cc: Eric Whitney
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the per huge page size control/query attributes to the per node
sysdevs:/sys/devices/system/node/node/hugepages/hugepages-/
nr_hugepages - r/w
free_huge_pages - r/o
surplus_huge_pages - r/oThe patch attempts to re-use/share as much of the existing global hstate
attribute initialization and handling, and the "nodes_allowed" constraint
processing as possible.Calling set_max_huge_pages() with no node indicates a change to global
hstate parameters. In this case, any non-default task mempolicy will be
used to generate the nodes_allowed mask. A valid node id indicates an
update to that node's hstate parameters, and the count argument specifies
the target count for the specified node. From this info, we compute the
target global count for the hstate and construct a nodes_allowed node mask
contain only the specified node.Setting the node specific nr_hugepages via the per node attribute
effectively ignores any task mempolicy or cpuset constraints.With this patch:
(me):ls /sys/devices/system/node/node0/hugepages/hugepages-2048kB
./ ../ free_hugepages nr_hugepages surplus_hugepagesStarting from:
Node 0 HugePages_Total: 0
Node 0 HugePages_Free: 0
Node 0 HugePages_Surp: 0
Node 1 HugePages_Total: 0
Node 1 HugePages_Free: 0
Node 1 HugePages_Surp: 0
Node 2 HugePages_Total: 0
Node 2 HugePages_Free: 0
Node 2 HugePages_Surp: 0
Node 3 HugePages_Total: 0
Node 3 HugePages_Free: 0
Node 3 HugePages_Surp: 0
vm.nr_hugepages = 0Allocate 16 persistent huge pages on node 2:
(me):echo 16 >/sys/devices/system/node/node2/hugepages/hugepages-2048kB/nr_hugepages[Note that this is equivalent to:
numactl -m 2 hugeadmin --pool-pages-min 2M:+16
]Yields:
Node 0 HugePages_Total: 0
Node 0 HugePages_Free: 0
Node 0 HugePages_Surp: 0
Node 1 HugePages_Total: 0
Node 1 HugePages_Free: 0
Node 1 HugePages_Surp: 0
Node 2 HugePages_Total: 16
Node 2 HugePages_Free: 16
Node 2 HugePages_Surp: 0
Node 3 HugePages_Total: 0
Node 3 HugePages_Free: 0
Node 3 HugePages_Surp: 0
vm.nr_hugepages = 16Global controls work as expected--reduce pool to 8 persistent huge pages:
(me):echo 8 >/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepagesNode 0 HugePages_Total: 0
Node 0 HugePages_Free: 0
Node 0 HugePages_Surp: 0
Node 1 HugePages_Total: 0
Node 1 HugePages_Free: 0
Node 1 HugePages_Surp: 0
Node 2 HugePages_Total: 8
Node 2 HugePages_Free: 8
Node 2 HugePages_Surp: 0
Node 3 HugePages_Total: 0
Node 3 HugePages_Free: 0
Node 3 HugePages_Surp: 0Signed-off-by: Lee Schermerhorn
Acked-by: Mel Gorman
Reviewed-by: Andi Kleen
Cc: KAMEZAWA Hiroyuki
Cc: Randy Dunlap
Cc: Nishanth Aravamudan
Cc: David Rientjes
Cc: Adam Litke
Cc: Andy Whitcroft
Cc: Eric Whitney
Cc: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Sep, 2009
2 commits
-
Recently we encountered OOM problems due to memory use of the GEM cache.
Generally a large amuont of Shmem/Tmpfs pages tend to create a memory
shortage problem.We often use the following calculation to determine the amount of shmem
pages:shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES
however the expression does not consider isolated and mlocked pages.
This patch adds explicit accounting for pages used by shmem and tmpfs.
Signed-off-by: KOSAKI Motohiro
Acked-by: Rik van Riel
Reviewed-by: Christoph Lameter
Acked-by: Wu Fengguang
Cc: David Rientjes
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The amount of memory allocated to kernel stacks can become significant and
cause OOM conditions. However, we do not display the amount of memory
consumed by stacks.Add code to display the amount of memory used for stacks in /proc/meminfo.
Signed-off-by: KOSAKI Motohiro
Reviewed-by: Christoph Lameter
Reviewed-by: Minchan Kim
Reviewed-by: Rik van Riel
Cc: David Rientjes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Jun, 2009
1 commit
-
Currently, nobody wants to turn UNEVICTABLE_LRU off. Thus this
configurability is unnecessary.Signed-off-by: KOSAKI Motohiro
Cc: Johannes Weiner
Cc: Andi Kleen
Acked-by: Minchan Kim
Cc: David Woodhouse
Cc: Matt Mackall
Cc: Rik van Riel
Cc: Lee Schermerhorn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Mar, 2009
1 commit
-
Impact: cleanup
node_to_cpumask (and the blecherous node_to_cpumask_ptr which
contained a declaration) are replaced now everyone implements
cpumask_of_node.Signed-off-by: Rusty Russell
11 Mar, 2009
1 commit
-
get_nid_for_pfn() returns int
Presumably the (nid < 0) case has never happened.
We do know that it is happening on one system while creating a symlink for
a memory section so it should also happen on the same system if
unregister_mem_sect_under_nodes() were called to remove the same symlink.The test was actually added in response to a problem with an earlier
version reported by Yasunori Goto where one or more of the leading pages
of a memory section on the 2nd node of one of his systems was
uninitialized because I believe they coincided with a memory hole.That earlier version did not ignore uninitialized pages and determined
the nid by considering only the 1st page of each memory section. This
caused the symlink to the 1st memory section on the 2nd node to be
incorrectly created in /sys/devices/system/node/node0 instead of
/sys/devices/system/node/node1. The problem was fixed by adding the
test to skip over uninitialized pages.I suspect we have not seen any reports of the non-removal
of a symlink due to the incorrect declaration of the nid
variable in unregister_mem_sect_under_nodes() because
- systems where a memory section could have an uninitialized
range of leading pages are probably rare.
- memory remove is probably not done very frequently on the
systems that are capable of demonstrating the problem.
- lingering symlink(s) that should have been removed may
have simply gone unnoticed.[garyhade@us.ibm.com: wrote changelog]
Signed-off-by: Roel Kluin
Cc: Gary Hade
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2009
1 commit
-
Show node to memory section relationship with symlinks in sysfs
Add /sys/devices/system/node/nodeX/memoryY symlinks for all
the memory sections located on nodeX. For example:
/sys/devices/system/node/node1/memory135 -> ../../memory/memory135
indicates that memory section 135 resides on node1.Also revises documentation to cover this change as well as updating
Documentation/ABI/testing/sysfs-devices-memory to include descriptions
of memory hotremove files 'phys_device', 'phys_index', and 'state'
that were previously not described there.In addition to it always being a good policy to provide users with
the maximum possible amount of physical location information for
resources that can be hot-added and/or hot-removed, the following
are some (but likely not all) of the user benefits provided by
this change.
Immediate:
- Provides information needed to determine the specific node
on which a defective DIMM is located. This will reduce system
downtime when the node or defective DIMM is swapped out.
- Prevents unintended onlining of a memory section that was
previously offlined due to a defective DIMM. This could happen
during node hot-add when the user or node hot-add assist script
onlines _all_ offlined sections due to user or script inability
to identify the specific memory sections located on the hot-added
node. The consequences of reintroducing the defective memory
could be ugly.
- Provides information needed to vary the amount and distribution
of memory on specific nodes for testing or debugging purposes.
Future:
- Will provide information needed to identify the memory
sections that need to be offlined prior to physical removal
of a specific node.Symlink creation during boot was tested on 2-node x86_64, 2-node
ppc64, and 2-node ia64 systems. Symlink creation during physical
memory hot-add tested on a 2-node x86_64 system.Signed-off-by: Gary Hade
Signed-off-by: Badari Pulavarty
Acked-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Dec, 2008
1 commit
-
…t_scnprintf to take pointers.
Impact: change calling convention of existing cpumask APIs
Most cpumask functions started with cpus_: these have been replaced by
cpumask_ ones which take struct cpumask pointers as expected.These four functions don't have good replacement names; fortunately
they're rarely used, so we just change them over.Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: paulus@samba.org
Cc: mingo@redhat.com
Cc: tony.luck@intel.com
Cc: ralf@linux-mips.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: cl@linux-foundation.org
Cc: srostedt@redhat.com
20 Oct, 2008
4 commits
-
This patch adds a function to scan individual or all zones' unevictable
lists and move any pages that have become evictable onto the respective
zone's inactive list, where shrink_inactive_list() will deal with them.Adds sysctl to scan all nodes, and per node attributes to individual
nodes' zones.Kosaki: If evictable page found in unevictable lru when write
/proc/sys/vm/scan_unevictable_pages, print filename and file offset of
these pages.[akpm@linux-foundation.org: fix one CONFIG_MMU=n build error]
[kosaki.motohiro@jp.fujitsu.com: adapt vmscan-unevictable-lru-scan-sysctl.patch to new sysfs API]
Signed-off-by: Lee Schermerhorn
Signed-off-by: Rik van Riel
Signed-off-by: KOSAKI Motohiro
Signed-off-by: KOSAKI Motohiro
Signed-off-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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 -
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 -
Split the LRU lists in two, one set for pages that are backed by real file
systems ("file") and one for pages that are backed by memory and swap
("anon"). The latter includes tmpfs.The advantage of doing this is that the VM will not have to scan over lots
of anonymous pages (which we generally do not want to swap out), just to
find the page cache pages that it should evict.This patch has the infrastructure and a basic policy to balance how much
we scan the anon lists and how much we scan the file lists. The big
policy changes are in separate patches.[lee.schermerhorn@hp.com: collect lru meminfo statistics from correct offset]
[kosaki.motohiro@jp.fujitsu.com: prevent incorrect oom under split_lru]
[kosaki.motohiro@jp.fujitsu.com: fix pagevec_move_tail() doesn't treat unevictable page]
[hugh@veritas.com: memcg swapbacked pages active]
[hugh@veritas.com: splitlru: BDI_CAP_SWAP_BACKED]
[akpm@linux-foundation.org: fix /proc/vmstat units]
[nishimura@mxp.nes.nec.co.jp: memcg: fix handling of shmem migration]
[kosaki.motohiro@jp.fujitsu.com: adjust Quicklists field of /proc/meminfo]
[kosaki.motohiro@jp.fujitsu.com: fix style issue of get_scan_ratio()]
Signed-off-by: Rik van Riel
Signed-off-by: Lee Schermerhorn
Signed-off-by: KOSAKI Motohiro
Signed-off-by: Hugh Dickins
Signed-off-by: Daisuke Nishimura
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Jul, 2008
1 commit
-
This allow to dynamically generate attributes and share show/store
functions between attributes. Right now most attributes are generated
by special macros and lots of duplicated code. With the attribute
passed it's instead possible to attach some data to the attribute
and then use that in shared low level functions to do different things.I need this for the dynamically generated bank attributes in the x86
machine check code, but it'll allow some further cleanups.I converted all users in tree to the new show/store prototype. It's a single
huge patch to avoid unbisectable sections.Runtime tested: x86-32, x86-64
Compiled only: ia64, powerpc
Not compile tested/only grep converted: sh, arm, avr32Signed-off-by: Andi Kleen
Signed-off-by: Greg Kroah-Hartman
05 Jul, 2008
1 commit
-
There is a bug in the output of /sys/devices/system/node/node[n]/meminfo
where the Active and Inactive values are in pages instead of Kbytes.Looks like this occurred back in 2.6.20 when the code was changed
over to use node_page_state().Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Apr, 2008
1 commit
-
Fuse will use temporary buffers to write back dirty data from memory mappings
(normal writes are done synchronously). This is needed, because there cannot
be any guarantee about the time in which a write will complete.By using temporary buffers, from the MM's point if view the page is written
back immediately. If the writeout was due to memory pressure, this
effectively migrates data from a full zone to a less full zone.This patch adds a new counter (NR_WRITEBACK_TEMP) for the number of pages used
as temporary buffers.[Lee.Schermerhorn@hp.com: add vmstat_text for NR_WRITEBACK_TEMP]
Signed-off-by: Miklos Szeredi
Cc: Christoph Lameter
Signed-off-by: Lee Schermerhorn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Apr, 2008
2 commits
-
* Cleaned up references to cpumask_scnprintf() and added new
cpulist_scnprintf() interfaces where appropriate.* Fix some small bugs (or code efficiency improvments) for various uses
of cpumask_scnprintf.* Clean up some checkpatch errors.
Signed-off-by: Mike Travis
Signed-off-by: Ingo Molnar -
* Use new node_to_cpumask_ptr. This creates a pointer to the
cpumask for a given node. This definition is in mm patch:asm-generic-add-node_to_cpumask_ptr-macro.patch
* Use new set_cpus_allowed_ptr function.
Depends on:
[mm-patch]: asm-generic-add-node_to_cpumask_ptr-macro.patch
[sched-devel]: sched: add new set_cpus_allowed_ptr function
[x86/latest]: x86: add cpus_scnprintf functionCc: Greg Kroah-Hartman
Cc: Greg Banks
Cc: H. Peter Anvin
Signed-off-by: Mike Travis
Signed-off-by: Ingo Molnar
25 Jan, 2008
1 commit
-
All kobjects require a dynamically allocated name now. We no longer
need to keep track if the name is statically assigned, we can just
unconditionally free() all kobject names on cleanup.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
17 Oct, 2007
1 commit
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Add a per node state sysfs class attribute file to /sys/devices/system/node
to display node state masks.E.g., on a 4-cell HP ia64 NUMA platform, we have 5 nodes: 4 representing
the actual hardware cells and one memory-only pseudo-node representing a
small amount [512MB] of "hardware interleaved" memory. With this patch, in
/sys/devices/system/node we see:#ls -1F /sys/devices/system/node
has_cpu
has_normal_memory
node0/
node1/
node2/
node3/
node4/
online
possible
#cat /sys/devices/system/node/possible
0-255
#cat /sys/devices/system/node/online
0-4
#cat /sys/devices/system/node/has_normal_memory
0-4
#cat /sys/devices/system/node/has_cpu
0-3Signed-off-by: Lee Schermerhorn
Acked-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 Feb, 2007
1 commit
-
Globally, s/driverfs/sysfs/g.
Signed-off-by: Robert P. J. Day
Signed-off-by: Adrian Bunk
