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Howlett" , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , damon@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v4 3/3] Docs/mm/damon/design: Document hugepage_mem_bp target metric Date: Mon, 31 Aug 2026 17:47:11 -0700 Message-ID: <20260901004712.89669-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <107dc6ba-697e-4b25-ba3e-8ce2499cac9a@infradead.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 5DD8A1A0006 X-Stat-Signature: 8the3pec75drrxo4b47ahagdbfm9b7r8 X-Rspam-User: X-HE-Tag: 1788223640-982278 X-HE-Meta: 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 kvUgKKTr oAkD29jyyiJq/1XItyWjgx5OROzt4bIsca1oAf6tO/LMIiN02rStJ8gSQZ+EKETehTXjpnQ0cgL9JSBc5nTl/r427YMTysdc9Q/sDBnNcrUYnAG9hefMEcMX/boZgAjCq6H+flRu4/dsPqPIhKWVDtYLyDQy3M22EXtsJTwZluZDIIfXiltiRfEm9DDpEGy+gPKjQ7DYOoRCt62yZzuaPBK+KLMavgjkubXnoWPxCgFyxB0Ji/0bo/CzSlhq1aNOZ6UOTf7iudrv0XxWCh9rrJbgLL7BAdsOUpnz4j75Zruc1VIxSWeueBiZNzjE00kDDk8ZyoRV2nw1v7f2WYaWQ18ZulI3jKXxuD5r65ODE53moT8V4wZ+1DwrcDPrQhbZaFjLQiUVosZgprIDLPmmIN+eNwQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 31 Aug 2026 13:00:26 -0700 Randy Dunlap wrote: > > > On 8/31/26 8:45 AM, Randy Dunlap wrote: > > Hi, > > > > On 8/31/26 7:47 AM, SJ Park wrote: > >> From: Asier Gutierrez > >> > >> Document hugepage_mem_bp metric exposed by sysfs. > >> > >> Signed-off-by: Asier Gutierrez > >> Reviewed-by: SJ Park > >> Signed-off-by: SJ Park > >> --- > >> 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). You are right, and I agree. I will add that clarification before the next merge window. > > > -- > ~Randy Thanks, SJ