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SeongJae Park 6a080670d6 mm/damon/sysfs: handle 'state' file inputs for every sampling interval if possible 
DAMON sysfs interface need to access kdamond-touching data for some of
kdamond user commands.  It uses ->after_aggregation() kdamond callback to
safely access the data in the case.  It had to use the aggregation
interval callback because that was the only callback that users can access
complete monitoring results.

Since patch series "mm/damon: provide pseudo-moving sum based access
rate", which starts from commit 78fbfb155d ("mm/damon/core: define and
use a dedicated function for region access rate update"), DAMON provides
good-to-use quality moitoring results for every sampling interval.  It
aims to help users who need to quickly retrieve the monitoring results. 
When the aggregation interval is set too long and therefore waiting for
the aggregation interval can degrade user experience, or when the access
pattern is expected to be significantly changed[1] could be such cases.

However, because DAMON sysfs interface is still handling the commands per
aggregation interval, the end user cannot get the benefit.  Update DAMON
sysfs interface to handle kdamond commands for every sampling interval if
applicable.  Specifically, all kdamond data accessing commands except
'commit' command are applicable.

[1] https://lore.kernel.org/r/20240129121316.GA9706@cuiyangpei

Link: https://lkml.kernel.org/r/20240206025158.203097-1-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: xiongping1 <xiongping1@xiaomi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
History 2024-02-22 10:24:55 -08:00
arch powerpc/mm: use pte_next_pfn() in set_ptes() 2024-02-22 10:24:51 -08:00
block blk-iocost: Fix an UBSAN shift-out-of-bounds warning 2024-02-08 10:11:39 -07:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto crypto: algif_hash - Remove bogus SGL free on zero-length error path 2024-02-02 18:08:12 +08:00
Documentation kasan: docs: update descriptions about test file and module 2024-02-22 10:24:53 -08:00
drivers x86/mm: delete unused cpu argument to leave_mm() 2024-02-22 10:24:41 -08:00
fs userfaultfd: fix return error if mmap_changing is non-zero in MOVE ioctl 2024-02-22 10:24:38 -08:00
include mm/zswap: stop lru list shrinking when encounter warm region 2024-02-22 10:24:54 -08:00
init arm64, powerpc, riscv, s390, x86: ptdump: refactor CONFIG_DEBUG_WX 2024-02-22 10:24:47 -08:00
io_uring io_uring/net: fix multishot accept overflow handling 2024-02-14 18:30:19 -07:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel mm/cma: drop CONFIG_CMA_DEBUG 2024-02-22 10:24:53 -08:00
lib XArray: add cmpxchg order test 2024-02-22 10:24:48 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm mm/damon/sysfs: handle 'state' file inputs for every sampling interval if possible 2024-02-22 10:24:55 -08:00
net Including fixes from can, wireless and netfilter. 2024-02-15 11:39:27 -08:00
rust Rust changes for v6.8 2024-01-11 13:05:41 -08:00
samples work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
scripts scripts/gdb/vmalloc: fix vmallocinfo error 2024-02-21 16:00:02 -08:00
security lsm/stable-6.8 PR 20240215 2024-02-16 07:58:43 -08:00
sound ALSA: usb-audio: More relaxed check of MIDI jack names 2024-02-15 16:56:05 +01:00
tools selftests/mm: run_vmtests.sh: add hugetlb_madv_vs_map 2024-02-22 10:24:53 -08:00
usr Kbuild updates for v6.8 2024-01-18 17:57:07 -08:00
virt Generic: 2024-01-17 13:03:37 -08:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.mailmap MAINTAINERS: mailmap: update Shakeel's email address 2024-02-20 14:20:50 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: supplement of zswap maintainers update 2024-01-25 23:52:21 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: mailmap: update Shakeel's email address 2024-02-20 14:20:50 -08:00
Makefile Linux 6.8-rc5 2024-02-18 12:56:25 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.