Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.. SPDX-License-Identifier: GPL-2.0
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==========================
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Frequently Asked Questions
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==========================
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Does DAMON support virtual memory only?
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=======================================
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No. The core of the DAMON is address space independent. The address space
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specific monitoring operations including monitoring target regions
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constructions and actual access checks can be implemented and configured on the
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DAMON core by the users. In this way, DAMON users can monitor any address
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space with any access check technique.
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Nonetheless, DAMON provides vma/rmap tracking and PTE Accessed bit check based
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implementations of the address space dependent functions for the virtual memory
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and the physical memory by default, for a reference and convenient use.
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Can I simply monitor page granularity?
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======================================
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Yes. You can do so by setting the ``min_nr_regions`` attribute higher than the
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working set size divided by the page size. Because the monitoring target
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regions size is forced to be ``>=page size``, the region split will make no
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effect.
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