27 Sep, 2019
1 commit
-
The naming of pgtable_page_{ctor,dtor}() seems to have confused a few
people, and until recently arm64 used these erroneously/pointlessly for
other levels of page table.To make it incredibly clear that these only apply to the PTE level, and to
align with the naming of pgtable_pmd_page_{ctor,dtor}(), let's rename them
to pgtable_pte_page_{ctor,dtor}().These changes were generated with the following shell script:
----
git grep -lw 'pgtable_page_.tor' | while read FILE; do
sed -i '{s/pgtable_page_ctor/pgtable_pte_page_ctor/}' $FILE;
sed -i '{s/pgtable_page_dtor/pgtable_pte_page_dtor/}' $FILE;
done
----... with the documentation re-flowed to remain under 80 columns, and
whitespace fixed up in macros to keep backslashes aligned.There should be no functional change as a result of this patch.
Link: http://lkml.kernel.org/r/20190722141133.3116-1-mark.rutland@arm.com
Signed-off-by: Mark Rutland
Reviewed-by: Mike Rapoport
Acked-by: Geert Uytterhoeven [m68k]
Cc: Anshuman Khandual
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: Yu Zhao
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 Aug, 2019
1 commit
-
From rdma.git
Jason Gunthorpe says:
====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation and use of the interval tree.
====================The branch is based on v5.3-rc5 due to dependencies, and is being taken
into hmm.git due to dependencies in the next patches.* odp_fixes:
RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr
RDMA/mlx5: Use ib_umem_start instead of umem.address
RDMA/core: Make invalidate_range a device operation
RDMA/odp: Use kvcalloc for the dma_list and page_list
RDMA/odp: Check for overflow when computing the umem_odp end
RDMA/odp: Provide ib_umem_odp_release() to undo the allocs
RDMA/odp: Split creating a umem_odp from ib_umem_get
RDMA/odp: Make the three ways to create a umem_odp clear
RMDA/odp: Consolidate umem_odp initialization
RDMA/odp: Make it clearer when a umem is an implicit ODP umem
RDMA/odp: Iterate over the whole rbtree directly
RDMA/odp: Use the common interval tree library instead of generic
RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLBSigned-off-by: Jason Gunthorpe
20 Aug, 2019
1 commit
-
There isn't any good reason to pass callbacks to migrate_vma. Instead
we can just export the three steps done by this function to drivers and
let them sequence the operation without callbacks. This removes a lot
of boilerplate code as-is, and will allow the drivers to drastically
improve code flow and error handling further on.Link: https://lore.kernel.org/r/20190814075928.23766-2-hch@lst.de
Signed-off-by: Christoph Hellwig
Reviewed-by: Ralph Campbell
Tested-by: Ralph Campbell
Signed-off-by: Jason Gunthorpe
08 Aug, 2019
1 commit
-
The start, end and page_shift values are all saved in the range structure,
so we might as well use that for argument passing.Link: https://lore.kernel.org/r/20190806160554.14046-7-hch@lst.de
Signed-off-by: Christoph Hellwig
Reviewed-by: Jason Gunthorpe
Reviewed-by: Felix Kuehling
Signed-off-by: Jason Gunthorpe
31 Jul, 2019
1 commit
-
Pull HMM fixes from Jason Gunthorpe:
"Fix the locking around nouveau's use of the hmm_range_* APIs. It works
correctly in the success case, but many of the the edge cases have
missing unlocks or double unlocks.The diffstat is a bit big as Christoph did a comprehensive job to move
the obsolete API from the core header and into the driver before
fixing its flow, but the risk of regression from this code motion is
low"* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
nouveau: unlock mmap_sem on all errors from nouveau_range_fault
nouveau: remove the block parameter to nouveau_range_fault
mm/hmm: move hmm_vma_range_done and hmm_vma_fault to nouveau
mm/hmm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot}
26 Jul, 2019
2 commits
-
Add a HMM_FAULT_SNAPSHOT flag so that hmm_range_snapshot can be merged
into the almost identical hmm_range_fault function.Link: https://lore.kernel.org/r/20190726005650.2566-5-rcampbell@nvidia.com
Signed-off-by: Christoph Hellwig
Signed-off-by: Ralph Campbell
Reviewed-by: Jason Gunthorpe
Signed-off-by: Jason Gunthorpe -
We should not have two different error codes for the same
condition. EAGAIN must be reserved for the FAULT_FLAG_ALLOW_RETRY retry
case and signals to the caller that the mmap_sem has been unlocked.Use EBUSY for the !valid case so that callers can get the locking right.
Link: https://lore.kernel.org/r/20190724065258.16603-2-hch@lst.de
Tested-by: Ralph Campbell
Signed-off-by: Christoph Hellwig
Reviewed-by: Ralph Campbell
Reviewed-by: Jason Gunthorpe
Reviewed-by: Felix Kuehling
[jgg: elaborated commit message]
Signed-off-by: Jason Gunthorpe
23 Jul, 2019
1 commit
-
Bring in a set of post-thrashup fixes from Mauro.
19 Jul, 2019
1 commit
-
Explain the general mechanisms of 'ZONE_DEVICE' pages and list the users
of 'devm_memremap_pages()'.[dan.j.williams@intel.com: update ZONE_DEVICE memory model documentation]
Link: http://lkml.kernel.org/r/156109575458.1409767.1885676287099277666.stgit@dwillia2-desk3.amr.corp.intel.com
Link: http://lkml.kernel.org/r/156092354985.979959.15763234410543451710.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams
Reported-by: Mike Rapoport
Reviewed-by: Mike Rapoport
Tested-by: Aneesh Kumar K.V [ppc64]
Cc: Jonathan Corbet
Cc: David Hildenbrand
Cc: Jane Chu
Cc: Jeff Moyer
Cc: Jérôme Glisse
Cc: Logan Gunthorpe
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: Pavel Tatashin
Cc: Toshi Kani
Cc: Vlastimil Babka
Cc: Wei Yang
Cc: Jason Gunthorpe
Cc: Christoph Hellwig
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Jul, 2019
1 commit
-
Now that the latex_documents are handled automatically, we can
remove those extra conf.py files.Signed-off-by: Mauro Carvalho Chehab
15 Jul, 2019
4 commits
-
Those files belong to the admin guide, so add them.
Signed-off-by: Mauro Carvalho Chehab
-
The stuff under sysctl describes /sys interface from userspace
point of view. So, add it to the admin-guide and remove the
:orphan: from its index file.Signed-off-by: Mauro Carvalho Chehab
-
Rename the /proc/sys/ documentation files to ReST, using the
README file as a template for an index.rst, adding the other
files there via TOC markup.Despite being written on different times with different
styles, try to make them somewhat coherent with a similar
look and feel, ensuring that they'll look nice as both
raw text file and as via the html output produced by the
Sphinx build system.At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.Signed-off-by: Mauro Carvalho Chehab
-
Pull HMM updates from Jason Gunthorpe:
"Improvements and bug fixes for the hmm interface in the kernel:- Improve clarity, locking and APIs related to the 'hmm mirror'
feature merged last cycle. In linux-next we now see AMDGPU and
nouveau to be using this API.- Remove old or transitional hmm APIs. These are hold overs from the
past with no users, or APIs that existed only to manage cross tree
conflicts. There are still a few more of these cleanups that didn't
make the merge window cut off.- Improve some core mm APIs:
- export alloc_pages_vma() for driver use
- refactor into devm_request_free_mem_region() to manage
DEVICE_PRIVATE resource reservations
- refactor duplicative driver code into the core dev_pagemap
struct- Remove hmm wrappers of improved core mm APIs, instead have drivers
use the simplified API directly- Remove DEVICE_PUBLIC
- Simplify the kconfig flow for the hmm users and core code"
* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (42 commits)
mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR
mm: remove the HMM config option
mm: sort out the DEVICE_PRIVATE Kconfig mess
mm: simplify ZONE_DEVICE page private data
mm: remove hmm_devmem_add
mm: remove hmm_vma_alloc_locked_page
nouveau: use devm_memremap_pages directly
nouveau: use alloc_page_vma directly
PCI/P2PDMA: use the dev_pagemap internal refcount
device-dax: use the dev_pagemap internal refcount
memremap: provide an optional internal refcount in struct dev_pagemap
memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag
memremap: remove the data field in struct dev_pagemap
memremap: add a migrate_to_ram method to struct dev_pagemap_ops
memremap: lift the devmap_enable manipulation into devm_memremap_pages
memremap: pass a struct dev_pagemap to ->kill and ->cleanup
memremap: move dev_pagemap callbacks into a separate structure
memremap: validate the pagemap type passed to devm_memremap_pages
mm: factor out a devm_request_free_mem_region helper
mm: export alloc_pages_vma
...
10 Jul, 2019
1 commit
-
Pull Documentation updates from Jonathan Corbet:
"It's been a relatively busy cycle for docs:- A fair pile of RST conversions, many from Mauro. These create more
than the usual number of simple but annoying merge conflicts with
other trees, unfortunately. He has a lot more of these waiting on
the wings that, I think, will go to you directly later on.- A new document on how to use merges and rebases in kernel repos,
and one on Spectre vulnerabilities.- Various improvements to the build system, including automatic
markup of function() references because some people, for reasons I
will never understand, were of the opinion that
:c:func:``function()`` is unattractive and not fun to type.- We now recommend using sphinx 1.7, but still support back to 1.4.
- Lots of smaller improvements, warning fixes, typo fixes, etc"
* tag 'docs-5.3' of git://git.lwn.net/linux: (129 commits)
docs: automarkup.py: ignore exceptions when seeking for xrefs
docs: Move binderfs to admin-guide
Disable Sphinx SmartyPants in HTML output
doc: RCU callback locks need only _bh, not necessarily _irq
docs: format kernel-parameters -- as code
Doc : doc-guide : Fix a typo
platform: x86: get rid of a non-existent document
Add the RCU docs to the core-api manual
Documentation: RCU: Add TOC tree hooks
Documentation: RCU: Rename txt files to rst
Documentation: RCU: Convert RCU UP systems to reST
Documentation: RCU: Convert RCU linked list to reST
Documentation: RCU: Convert RCU basic concepts to reST
docs: filesystems: Remove uneeded .rst extension on toctables
scripts/sphinx-pre-install: fix out-of-tree build
docs: zh_CN: submitting-drivers.rst: Remove a duplicated Documentation/
Documentation: PGP: update for newer HW devices
Documentation: Add section about CPU vulnerabilities for Spectre
Documentation: platform: Delete x86-laptop-drivers.txt
docs: Note that :c:func: should no longer be used
...
09 Jul, 2019
1 commit
-
Pull cgroup updates from Tejun Heo:
"Documentation updates and the addition of cgroup_parse_float() which
will be used by new controllers including blk-iocost"* 'for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
docs: cgroup-v1: convert docs to ReST and rename to *.rst
cgroup: Move cgroup_parse_float() implementation out of CONFIG_SYSFS
cgroup: add cgroup_parse_float()
03 Jul, 2019
2 commits
-
Christoph Hellwig says:
====================
Below is a series that cleans up the dev_pagemap interface so that it is
more easily usable, which removes the need to wrap it in hmm and thus
allowing to kill a lot of codeChanges since v3:
- pull in "mm/swap: Fix release_pages() when releasing devmap pages" and
rebase the other patches on top of that
- fold the hmm_devmem_add_resource into the DEVICE_PUBLIC memory removal
patch
- remove _vm_normal_page as it isn't needed without DEVICE_PUBLIC memory
- pick up various ACKsChanges since v2:
- fix nvdimm kunit build
- add a new memory type for device dax
- fix a few issues in intermediate patches that didn't show up in the end
result
- incorporate feedback from Michal Hocko, including killing of
the DEVICE_PUBLIC memory type entirelyChanges since v1:
- rebase
- also switch p2pdma to the internal refcount
- add type checking for pgmap->type
- rename the migrate method to migrate_to_ram
- cleanup the altmap_valid flag
- various tidbits from the reviews
====================Conflicts resolved by:
- Keeping Ira's version of the code in swap.c
- Using the delete for the section in hmm.rst
- Using the delete for the devmap code in hmm.c and .h* branch 'hmm-devmem-cleanup.4': (24 commits)
mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR
mm: remove the HMM config option
mm: sort out the DEVICE_PRIVATE Kconfig mess
mm: simplify ZONE_DEVICE page private data
mm: remove hmm_devmem_add
mm: remove hmm_vma_alloc_locked_page
nouveau: use devm_memremap_pages directly
nouveau: use alloc_page_vma directly
PCI/P2PDMA: use the dev_pagemap internal refcount
device-dax: use the dev_pagemap internal refcount
memremap: provide an optional internal refcount in struct dev_pagemap
memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag
memremap: remove the data field in struct dev_pagemap
memremap: add a migrate_to_ram method to struct dev_pagemap_ops
memremap: lift the devmap_enable manipulation into devm_memremap_pages
memremap: pass a struct dev_pagemap to ->kill and ->cleanup
memremap: move dev_pagemap callbacks into a separate structure
memremap: validate the pagemap type passed to devm_memremap_pages
mm: factor out a devm_request_free_mem_region helper
mm: export alloc_pages_vma
...Signed-off-by: Jason Gunthorpe
-
There isn't really much value add in the hmm_devmem_add wrapper and
more, as using devm_memremap_pages directly now is just as simple.Signed-off-by: Christoph Hellwig
Reviewed-by: Jason Gunthorpe
Reviewed-by: Dan Williams
Signed-off-by: Jason Gunthorpe
21 Jun, 2019
1 commit
-
The asterisks prepended to the quoted text currently get translated to
bullet points, which gets increasingly confusing the smaller your
screen is (when viewing the sphinx output, that is).Convert the whole quote to a literal block.
Signed-off-by: Valentin Schneider
Signed-off-by: Jonathan Corbet
15 Jun, 2019
2 commits
-
In order to prepare to add them to the Kernel API book,
convert the files to ReST format.The conversion is actually:
- add blank lines and identation in order to identify paragraphs;
- fix tables markups;
- add some lists markups;
- mark literal blocks;
- adjust title markups.At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.Signed-off-by: Mauro Carvalho Chehab
Signed-off-by: Jonathan Corbet -
Convert the cgroup-v1 files to ReST format, in order to
allow a later addition to the admin-guide.The conversion is actually:
- add blank lines and identation in order to identify paragraphs;
- fix tables markups;
- add some lists markups;
- mark literal blocks;
- adjust title markups.At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.Signed-off-by: Mauro Carvalho Chehab
Acked-by: Tejun Heo
Signed-off-by: Tejun Heo
07 Jun, 2019
1 commit
-
Update the HMM documentation to reflect the latest API and make a few
minor wording changes.Cc: John Hubbard
Cc: Ira Weiny
Cc: Dan Williams
Cc: Arnd Bergmann
Cc: Balbir Singh
Cc: Dan Carpenter
Cc: Matthew Wilcox
Cc: Souptick Joarder
Cc: Andrew Morton
Signed-off-by: Ralph Campbell
Reviewed-by: Jérôme Glisse
Signed-off-by: Jason Gunthorpe
02 Jun, 2019
1 commit
-
Fix Sphinx warnings in Documentation/vm/hmm.rst by using "::" notation and
inserting a blank line. Also add a missing ';'.Documentation/vm/hmm.rst:292: WARNING: Unexpected indentation.
Documentation/vm/hmm.rst:300: WARNING: Unexpected indentation.Link: http://lkml.kernel.org/r/c5995359-7c82-4e47-c7be-b58a4dda0953@infradead.org
Fixes: 023a019a9b4e ("mm/hmm: add default fault flags to avoid the need to pre-fill pfns arrays")
Signed-off-by: Randy Dunlap
Reviewed-by: Jérôme Glisse
Reviewed-by: Mike Rapoport
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 May, 2019
4 commits
-
The HMM mirror API can be use in two fashions. The first one where the
HMM user coalesce multiple page faults into one request and set flags per
pfns for of those faults. The second one where the HMM user want to
pre-fault a range with specific flags. For the latter one it is a waste
to have the user pre-fill the pfn arrays with a default flags value.This patch adds a default flags value allowing user to set them for a
range without having to pre-fill the pfn array.Link: http://lkml.kernel.org/r/20190403193318.16478-8-jglisse@redhat.com
Signed-off-by: Jérôme Glisse
Reviewed-by: Ralph Campbell
Cc: John Hubbard
Cc: Dan Williams
Cc: Arnd Bergmann
Cc: Balbir Singh
Cc: Dan Carpenter
Cc: Ira Weiny
Cc: Matthew Wilcox
Cc: Souptick Joarder
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A common use case for HMM mirror is user trying to mirror a range and
before they could program the hardware it get invalidated by some core mm
event. Instead of having user re-try right away to mirror the range
provide a completion mechanism for them to wait for any active
invalidation affecting the range.This also changes how hmm_range_snapshot() and hmm_range_fault() works by
not relying on vma so that we can drop the mmap_sem when waiting and
lookup the vma again on retry.Link: http://lkml.kernel.org/r/20190403193318.16478-7-jglisse@redhat.com
Signed-off-by: Jérôme Glisse
Reviewed-by: Ralph Campbell
Cc: John Hubbard
Cc: Dan Williams
Cc: Dan Carpenter
Cc: Matthew Wilcox
Cc: Arnd Bergmann
Cc: Balbir Singh
Cc: Ira Weiny
Cc: Souptick Joarder
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Minor optimization around hmm_pte_need_fault(). Rename for consistency
between code, comments and documentation. Also improves the comments on
all the possible returns values. Improve the function by returning the
number of populated entries in pfns array.Link: http://lkml.kernel.org/r/20190403193318.16478-6-jglisse@redhat.com
Signed-off-by: Jérôme Glisse
Reviewed-by: Ralph Campbell
Cc: John Hubbard
Cc: Dan Williams
Cc: Arnd Bergmann
Cc: Balbir Singh
Cc: Dan Carpenter
Cc: Ira Weiny
Cc: Matthew Wilcox
Cc: Souptick Joarder
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Rename for consistency between code, comments and documentation. Also
improves the comments on all the possible returns values. Improve the
function by returning the number of populated entries in pfns array.Link: http://lkml.kernel.org/r/20190403193318.16478-5-jglisse@redhat.com
Signed-off-by: Jérôme Glisse
Reviewed-by: Ralph Campbell
Reviewed-by: John Hubbard
Reviewed-by: Ira Weiny
Cc: Dan Williams
Cc: Arnd Bergmann
Cc: Balbir Singh
Cc: Dan Carpenter
Cc: Matthew Wilcox
Cc: Souptick Joarder
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Apr, 2019
2 commits
-
Some minor wording changes and typo corrections.
Signed-off-by: Ralph Campbell
Acked-by: Randy Dunlap
Acked-by: Mike Kravetz
Cc: Mike Rapoport
Signed-off-by: Jonathan Corbet -
Describe what {FLAT,DISCONTIG,SPARSE}MEM are and how they manage to
maintain pfn struct page correspondence.Signed-off-by: Mike Rapoport
Acked-by: Randy Dunlap
Signed-off-by: Jonathan Corbet
20 Apr, 2019
1 commit
-
When demonstrating FOLL_SPLIT in transhuge document, migration is used
as an example. But, since commit 94723aafb9e7 ("mm: unclutter THP
migration"), the way of THP migration is totally changed. FOLL_SPLIT is
not used by migration anymore due to the change.Remove the obsolete example to avoid confusion.
Cc: Michal Hocko
Cc: Kirill A. Shutemov
Cc: Mike Rapoport
Signed-off-by: Yang Shi
Reviewed-by: Zi Yan
Signed-off-by: Jonathan Corbet
10 Apr, 2019
1 commit
-
Current document includes the path to an RST doc file. Since this is an
RST file we can make this a link. Keeps the path as the link title
since that what the original author wrote.Use reference to link to rst file.
Signed-off-by: Tobin C. Harding
Signed-off-by: Jonathan Corbet
02 Feb, 2019
3 commits
-
sphinx emits warning
WARNING: undefined label: memory-allocation ...
This seems to be caused by the use of a hyphen in the label name instead
of an underscore. Using an underscore for the label name and the
reference clears the warning.Use underscore not hyphen in label and reference.
Signed-off-by: Tobin C. Harding
Signed-off-by: Jonathan Corbet -
sphinx emits warning
WARNING: Inline emphasis start-string without end-string.
This is caused by a missing colon.
Add missing colon, clearing shpinx build warning.
Signed-off-by: Tobin C. Harding
Acked-by: Mike Rapoport
Signed-off-by: Jonathan Corbet -
There is a minor typo in SLUB documentation.
Fix typo.
Signed-off-by: Tobin C. Harding
Acked-by: Mike Rapoport
Signed-off-by: Jonathan Corbet
30 Dec, 2018
1 commit
-
Pull documentation update from Jonathan Corbet:
"A fairly normal cycle for documentation stuff. We have a new document
on perf security, more Italian translations, more improvements to the
memory-management docs, improvements to the pathname lookup
documentation, and the usual array of smaller fixes.As is often the case, there are a few reaches outside of
Documentation/ to adjust kerneldoc comments"* tag 'docs-5.0' of git://git.lwn.net/linux: (38 commits)
docs: improve pathname-lookup document structure
configfs: fix wrong name of struct in documentation
docs/mm-api: link slab_common.c to "The Slab Cache" section
slab: make kmem_cache_create{_usercopy} description proper kernel-doc
doc:process: add links where missing
docs/core-api: make mm-api.rst more structured
x86, boot: documentation whitespace fixup
Documentation: devres: note checking needs when converting
doc:it: add some process/* translations
doc:it: fixes in process/1.Intro
Documentation: convert path-lookup from markdown to resturctured text
Documentation/admin-guide: update admin-guide index.rst
Documentation/admin-guide: introduce perf-security.rst file
scripts/kernel-doc: Fix struct and struct field attribute processing
Documentation: dev-tools: Fix typos in index.rst
Correct gen_init_cpio tool's documentation
Document /proc/pid PID reuse behavior
Documentation: update path-lookup.md for parallel lookups
Documentation: Use "while" instead of "whilst"
dmaengine: Add mailing list address to the documentation
...
21 Nov, 2018
1 commit
-
I just went looking for the memory allocation guide in the MM docs instead
of in the core API. For the benefit of the next person who makes that
mistake, link to it from the MM docs.Signed-off-by: Matthew Wilcox
Acked-by: Mike Rapoport
Signed-off-by: Jonathan Corbet
20 Nov, 2018
1 commit
-
Pull in v4.20-rc3 via drm-next.
Signed-off-by: Jani Nikula
07 Nov, 2018
1 commit
-
The i915 driver uses shmemfs to allocate backing storage for gem
objects. These shmemfs pages can be pinned (increased ref count) by
shmem_read_mapping_page_gfp(). When a lot of pages are pinned, vmscan
wastes a lot of time scanning these pinned pages. In some extreme case,
all pages in the inactive anon lru are pinned, and only the inactive
anon lru is scanned due to inactive_ratio, the system cannot swap and
invokes the oom-killer. Mark these pinned pages as unevictable to speed
up vmscan.Export pagevec API check_move_unevictable_pages().
This patch was inspired by Chris Wilson's change [1].
[1]: https://patchwork.kernel.org/patch/9768741/
Cc: Chris Wilson
Cc: Joonas Lahtinen
Cc: Peter Zijlstra
Cc: Andrew Morton
Cc: Dave Hansen
Signed-off-by: Kuo-Hsin Yang
Acked-by: Michal Hocko # mm part
Reviewed-by: Chris Wilson
Acked-by: Dave Hansen
Acked-by: Andrew Morton
Link: https://patchwork.freedesktop.org/patch/msgid/20181106132324.17390-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson
27 Oct, 2018
1 commit
-
Extend the slub_debug syntax to "slub_debug=[,]*", where
may contain an asterisk at the end. For example, the following
would poison all kmalloc slabs:slub_debug=P,kmalloc*
and the following would apply the default flags to all kmalloc and all
block IO slabs:slub_debug=,bio*,kmalloc*
Please note that a similar patch was posted by Iliyan Malchev some time
ago but was never merged:https://marc.info/?l=linux-mm&m=131283905330474&w=2
Link: http://lkml.kernel.org/r/20180928111139.27962-1-atomlin@redhat.com
Signed-off-by: Aaron Tomlin
Acked-by: Christoph Lameter
Cc: Pekka Enberg
Cc: David Rientjes
Cc: Joonsoo Kim
Cc: Iliyan Malchev
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
10 Sep, 2018
1 commit
-
This is a respin with a wider audience (all that get_maintainer returned)
and I know this spams a *lot* of people. Not sure what would be the correct
way, so my apologies for ruining your inbox.The 00-INDEX files are supposed to give a summary of all files present
in a directory, but these files are horribly out of date and their
usefulness is brought into question. Often a simple "ls" would reveal
the same information as the filenames are generally quite descriptive as
a short introduction to what the file covers (it should not surprise
anyone what Documentation/sched/sched-design-CFS.txt covers)A few years back it was mentioned that these files were no longer really
needed, and they have since then grown further out of date, so perhaps
it is time to just throw them out.A short status yields the following _outdated_ 00-INDEX files, first
counter is files listed in 00-INDEX but missing in the directory, last
is files present but not listed in 00-INDEX.List of outdated 00-INDEX:
Documentation: (4/10)
Documentation/sysctl: (0/1)
Documentation/timers: (1/0)
Documentation/blockdev: (3/1)
Documentation/w1/slaves: (0/1)
Documentation/locking: (0/1)
Documentation/devicetree: (0/5)
Documentation/power: (1/1)
Documentation/powerpc: (0/5)
Documentation/arm: (1/0)
Documentation/x86: (0/9)
Documentation/x86/x86_64: (1/1)
Documentation/scsi: (4/4)
Documentation/filesystems: (2/9)
Documentation/filesystems/nfs: (0/2)
Documentation/cgroup-v1: (0/2)
Documentation/kbuild: (0/4)
Documentation/spi: (1/0)
Documentation/virtual/kvm: (1/0)
Documentation/scheduler: (0/2)
Documentation/fb: (0/1)
Documentation/block: (0/1)
Documentation/networking: (6/37)
Documentation/vm: (1/3)Then there are 364 subdirectories in Documentation/ with several files that
are missing 00-INDEX alltogether (and another 120 with a single file and no
00-INDEX).I don't really have an opinion to whether or not we /should/ have 00-INDEX,
but the above 00-INDEX should either be removed or be kept up to date. If
we should keep the files, I can try to keep them updated, but I rather not
if we just want to delete them anyway.As a starting point, remove all index-files and references to 00-INDEX and
see where the discussion is going.Signed-off-by: Henrik Austad
Acked-by: "Paul E. McKenney"
Just-do-it-by: Steven Rostedt
Reviewed-by: Jens Axboe
Acked-by: Paul Moore
Acked-by: Greg Kroah-Hartman
Acked-by: Mark Brown
Acked-by: Mike Rapoport
Cc: [Almost everybody else]
Signed-off-by: Jonathan Corbet
