Re: [PATCH v4 3/3] Docs/mm/damon/design: Document hugepage_mem_bp target metric

From: Randy Dunlap

Date: Mon Aug 31 2026 - 17:03:48 EST




On 8/31/26 8:45 AM, Randy Dunlap wrote:
> Hi,
>
> On 8/31/26 7:47 AM, SJ Park wrote:
>> From: Asier Gutierrez <gutierrez.asier@xxxxxxxxxxxxxxxxxxx>
>>
>> Document hugepage_mem_bp metric exposed by sysfs.
>>
>> Signed-off-by: Asier Gutierrez <gutierrez.asier@xxxxxxxxxxxxxxxxxxx>
>> Reviewed-by: SJ Park <sj@xxxxxxxxxx>
>> Signed-off-by: SJ Park <sj@xxxxxxxxxx>
>> ---
>> Documentation/mm/damon/design.rst | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
>> index aed6cb1cf4831..a8c163475ef2b 100644
>> --- a/Documentation/mm/damon/design.rst
>> +++ b/Documentation/mm/damon/design.rst
>> @@ -713,6 +713,8 @@ mechanism tries to make ``current_value`` of ``target_metric`` be same to
>> bp (1/10,000).
>> - ``node_eligible_mem_bp``: Scheme target access pattern-eligible memory ratio
>> of a node in bp (1/10,000).
>> +- ``hugepage_mem_bp``: Total huge page to total used memory ratio in bp
>> + (1/10,000).
>>
>> ``nid`` is optionally required for ``node_mem_used_bp``, ``node_mem_free_bp``,
>> ``node_memcg_used_bp``, ``node_memcg_free_bp`` and ``node_eligible_mem_bp`` to
>
> I've looked thru the entire design.rst file and cannot find anything telling
> me (or anyone) what "bp" means. Explain??

OK, I found it on the internet. I still think that it would be a
good idea to say "basis point" one time (the first time that it is used).


--
~Randy