kernel/linux.git/Documentation/admin-guide/mm, branch v5.19

Docs/admin-guide/mm/damon/reclaim: document 'commit_inputs' parameter

2022-05-13T14:20:09+00:00

This commit documents the new DAMON_RECLAIM parameter, 'commit_inputs' in its usage document. Link: https://lkml.kernel.org/r/20220429160606.127307-15-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton

Docs/{ABI,admin-guide}/damon: Update for 'state' sysfs file input keyword, 'commit'

2022-05-13T14:20:09+00:00

This commit documents the newly added 'state' sysfs file input keyword, 'commit', which allows online tuning of DAMON contexts. Link: https://lkml.kernel.org/r/20220429160606.127307-13-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton

Docs/{ABI,admin-guide}/damon: update for fixed virtual address ranges monitoring

2022-05-13T14:20:06+00:00

This commit documents the user space support of the newly added monitoring operations set for fixed virtual address ranges monitoring, namely 'fvaddr', on the ABI and usage documents for DAMON. Link: https://lkml.kernel.org/r/20220426231750.48822-4-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton

Docs/{ABI,admin-guide}/damon: document 'avail_operations' sysfs file

2022-05-13T14:20:06+00:00

This commit updates the DAMON ABI and usage documents for the new sysfs file, 'avail_operations'. Link: https://lkml.kernel.org/r/20220426203843.45238-5-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton

mm/vmstat: add events for ksm cow

2022-04-29T06:16:16+00:00

Users may use ksm by calling madvise(, , MADV_MERGEABLE) when they want to save memory, it's a tradeoff by suffering delay on ksm cow. Users can get to know how much memory ksm saved by reading /sys/kernel/mm/ksm/pages_sharing, but they don't know what's the costs of ksm cow, and this is important of some delay sensitive tasks. So add ksm cow events to help users evaluate whether or how to use ksm. Also update Documentation/admin-guide/mm/ksm.rst with new added events. Link: https://lkml.kernel.org/r/20220331035616.2390805-1-yang.yang29@zte.com.cn Signed-off-by: Yang Yang Reviewed-by: David Hildenbrand Reviewed-by: xu xin Reviewed-by: Ran Xiaokai Cc: Matthew Wilcox (Oracle) Cc: Jonathan Corbet Cc: Dave Hansen Cc: Saravanan D Cc: Minchan Kim Cc: John Hubbard Signed-off-by: Andrew Morton

mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*

2022-04-29T06:16:15+00:00

The word of "free" is not expressive enough to express the feature of optimizing vmemmap pages associated with each HugeTLB, rename this keywork to "optimize". In this patch , cheanup configs to make code more expressive. Link: https://lkml.kernel.org/r/20220404074652.68024-4-songmuchun@bytedance.com Signed-off-by: Muchun Song Cc: Mike Kravetz Cc: David Hildenbrand Signed-off-by: Andrew Morton

Docs/admin-guide/mm/damon/usage: document DAMON sysfs interface

2022-03-22T22:57:13+00:00

This commit adds detailed usage of DAMON sysfs interface in the admin-guide document for DAMON. Link: https://lkml.kernel.org/r/20220228081314.5770-13-sj@kernel.org Signed-off-by: SeongJae Park Cc: David Rientjes Cc: Greg Kroah-Hartman Cc: Jonathan Corbet Cc: Shuah Khan Cc: Xin Hao Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Docs/damon: update outdated term 'regions update interval'

2022-03-22T22:57:12+00:00

Before DAMON is merged in the mainline, the concept of 'regions update interval' has generalized to be used as the time interval for update of any monitoring operations related data structure, but the document has not updated properly. This commit updates the document for better consistency. Link: https://lkml.kernel.org/r/20220222170100.17068-4-sj@kernel.org Signed-off-by: SeongJae Park Cc: Jonathan Corbet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Docs/admin-guide/mm/damon/usage: update for changed initail_regions file input

2022-03-22T22:57:12+00:00

A previous commit made init_regions debugfs file to use target index instead of target id for specifying the target of the init regions. This commit updates the usage document to reflect the change. Link: https://lkml.kernel.org/r/20211230100723.2238-3-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/zswap.c: allow handling just same-value filled pages

2022-03-22T22:57:11+00:00

Zswap has an ability to efficiently store same-value filled pages, which can be turned on and off using the "same_filled_pages_enabled" parameter. However, there is currently no way to enable just this (lightweight) functionality, while not making use of the whole compressed page storage machinery. Add a "non_same_filled_pages_enabled" parameter which allows disabling handling of pages that aren't same-value filled. This way zswap can be run in such lightweight same-value filled pages only mode. Link: https://lkml.kernel.org/r/7dbafa963e8bab43608189abbe2067f4b9287831.1641247624.git.maciej.szmigiero@oracle.com Signed-off-by: Maciej S. Szmigiero Cc: Seth Jennings Cc: Dan Streetman Cc: Vitaly Wool Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds