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linux/Documentation/mm/damon/faq.rst
SeongJae Park c6bb975aa6 Docs/mm/damon/faq: remove old questions
Patch series "Docs/mm/damon: Minor fixes and design doc update".

Some of the DAMON documents are outdated, or having minor typos or grammar
erros.  Especially, the design doc has not updated for DAMOS, which is an
important part of DAMON.  Fix the minor issues and update documents.


This patch (of 10):

The first two questions of DAMON faqs have raised when DAMON patches were
first submitted.  More than one year has passed since DAMON patches get
merged in the mainline, and that kind of questions are not asked nowadays.
Remove the questions.

Link: https://lkml.kernel.org/r/20230525214314.5204-1-sj@kernel.org
Link: https://lkml.kernel.org/r/20230525214314.5204-2-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>
2023-06-09 16:25:46 -07:00

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1.1 KiB
ReStructuredText

.. SPDX-License-Identifier: GPL-2.0
==========================
Frequently Asked Questions
==========================
Does DAMON support virtual memory only?
=======================================
No. The core of the DAMON is address space independent. The address space
specific monitoring operations including monitoring target regions
constructions and actual access checks can be implemented and configured on the
DAMON core by the users. In this way, DAMON users can monitor any address
space with any access check technique.
Nonetheless, DAMON provides vma/rmap tracking and PTE Accessed bit check based
implementations of the address space dependent functions for the virtual memory
and the physical memory by default, for a reference and convenient use.
Can I simply monitor page granularity?
======================================
Yes. You can do so by setting the ``min_nr_regions`` attribute higher than the
working set size divided by the page size. Because the monitoring target
regions size is forced to be ``>=page size``, the region split will make no
effect.