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mm/damon/Kconfig: add DAMON debugfs interface deprecation notice

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DAMON debugfs interface has announced to be deprecated after >v5.15 LTS
kernel is released.  And, v6.1.y has announced to be an LTS[1].

Though the announcement was there for a while, some people might not
noticed that so far.  Also, some users could depend on it and have
problems at  movng to the alternative (DAMON sysfs interface).

For such cases, note DAMON debugfs interface as deprecated, and contacts
to ask helps on the Kconfig.

[1] https://git.kernel.org/pub/scm/docs/kernel/website.git/commit/?id=332e9121320bc7461b2d3a79665caf153e51732c

Link: https://lkml.kernel.org/r/20230209192009.7885-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2023-02-09 19:20:08 +00:00 committed by Andrew Morton
parent 5445fcbc4c
commit 61e88a2f66
1 changed files with 4 additions and 3 deletions
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mm/damon/Kconfig
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@ -60,7 +60,7 @@ config DAMON_SYSFS
the interface for arbitrary data access monitoring.
config DAMON_DBGFS
bool "DAMON debugfs interface"
bool "DAMON debugfs interface (DEPRECATED!)"
depends on DAMON_VADDR && DAMON_PADDR && DEBUG_FS
help
This builds the debugfs interface for DAMON. The user space admins
@ -68,8 +68,9 @@ config DAMON_DBGFS
If unsure, say N.
This will be removed after >5.15.y LTS kernel is released, so users
should move to the sysfs interface (DAMON_SYSFS).
This is deprecated, so users should move to the sysfs interface
(DAMON_SYSFS). If you depend on this and cannot move, please report
your usecase to damon@lists.linux.dev and linux-mm@kvack.org.
config DAMON_DBGFS_KUNIT_TEST
bool "Test for damon debugfs interface" if !KUNIT_ALL_TESTS