Commit cc7324ac authored by SeongJae Park's avatar SeongJae Park Committed by Zhong Jinghua
Browse files

Docs/ABI/damon: document 'schemes/<s>/tried_regions' sysfs directory 

mainline inclusion
from mainline-v6.2-rc6
commit 1b0006da
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6MRUG

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1b0006daa36f2ccb7f213007365d504bcd016312

--------------------------------

Update DAMON ABI document for the 'tried_regions' directory of DAMON
sysfs interface.

Link: https://lkml.kernel.org/r/20221101220328.95765-9-sj@kernel.org


Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarZe Zuo <zuoze1@huawei.com>
parent 4f0cecd9

Documentation/ABI/testing/sysfs-kernel-mm-damon

+32 −0
Original line number Diff line number Diff line
@@ -27,6 +27,10 @@ Description: Writing 'on' or 'off' to this file makes the kdamond starts or 
		makes the kdamond reads the user inputs in the sysfs files

		except 'state' again.  Writing 'update_schemes_stats' to the

		file updates contents of schemes stats files of the kdamond.

		Writing 'update_schemes_tried_regions' to the file updates

		contents of 'tried_regions' directory of every scheme directory

		of this kdamond.  Writing 'clear_schemes_tried_regions' to the

		file removes contents of the 'tried_regions' directory.



What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/pid

Date:		Mar 2022
@@ -283,3 +287,31 @@ Date: Mar 2022 
Contact:	SeongJae Park <sj@kernel.org>

Description:	Reading this file returns the number of the exceed events of

		the scheme's quotas.



What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/start

Date:		Oct 2022

Contact:	SeongJae Park <sj@kernel.org>

Description:	Reading this file returns the start address of a memory region

		that corresponding DAMON-based Operation Scheme's action has

		tried to be applied.



What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/end

Date:		Oct 2022

Contact:	SeongJae Park <sj@kernel.org>

Description:	Reading this file returns the end address of a memory region

		that corresponding DAMON-based Operation Scheme's action has

		tried to be applied.



What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/nr_accesses

Date:		Oct 2022

Contact:	SeongJae Park <sj@kernel.org>

Description:	Reading this file returns the 'nr_accesses' of a memory region

		that corresponding DAMON-based Operation Scheme's action has

		tried to be applied.



What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/age

Date:		Oct 2022

Contact:	SeongJae Park <sj@kernel.org>

Description:	Reading this file returns the 'age' of a memory region that

		corresponding DAMON-based Operation Scheme's action has tried

		to be applied.