[PATCH 2/4] Docs/admin-guide/mm/damon/usage: Update for changed initail_regions file input
From: SeongJae Park <sj@kernel.org>
Date: 2021-12-30 10:14:56
Also in:
lkml
Subsystem:
damon, documentation, memory management - misc, the rest · Maintainers:
SeongJae Park, Jonathan Corbet, Andrew Morton, David Hildenbrand, Linus Torvalds
A previous commit made init_regions debugfs file to use target index instead of target id for specifying the target of the init regions. This commit updates the usage document to reflect the change. Signed-off-by: SeongJae Park <sj@kernel.org> --- Documentation/admin-guide/mm/damon/usage.rst | 24 ++++++++++++-------- 1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 59b84904a854..1e06435b8ff6 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst@@ -108,19 +108,23 @@ In such cases, users can explicitly set the initial monitoring target regions as they want, by writing proper values to the ``init_regions`` file. Each line of the input should represent one region in below form.:: - <target id> <start address> <end address> + <target idx> <start address> <end address> -The ``target id`` should already in ``target_ids`` file, and the regions should -be passed in address order. For example, below commands will set a couple of -address ranges, ``1-100`` and ``100-200`` as the initial monitoring target -region of process 42, and another couple of address ranges, ``20-40`` and -``50-100`` as that of process 4242.:: +The ``target idx`` should be the index of the target in ``target_ids`` file, +starting from ``0``, and the regions should be passed in address order. For +example, below commands will set a couple of address ranges, ``1-100`` and +``100-200`` as the initial monitoring target region of pid 42, which is the +first one (index ``0``) in ``target_ids``, and another couple of address +ranges, ``20-40`` and ``50-100`` as that of pid 4242, which is the second one +(index ``1``) in ``target_ids``.:: # cd <debugfs>/damon - # echo "42 1 100 - 42 100 200 - 4242 20 40 - 4242 50 100" > init_regions + # cat target_ids + 42 4242 + # echo "0 1 100 + 0 100 200 + 1 20 40 + 1 50 100" > init_regions Note that this sets the initial monitoring target regions only. In case of virtual memory monitoring, DAMON will automatically updates the boundary of the
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2.17.1