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Howlett" , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Randy Dunlap , 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: [PATCH 10/10] Docs/mm/damon/design: clarify bp is basis point Date: Thu, 17 Sep 2026 07:22:08 -0700 Message-ID: <20260917142210.90829-11-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260917142210.90829-1-sj@kernel.org> References: <20260917142210.90829-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 3C81C14000E X-Stat-Signature: 7jaddswghnf79xpixxpu9ybi73ouj76p X-Rspam-User: X-HE-Tag: 1789654943-87194 X-HE-Meta: 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 xaCNFBqA HwiGKeLaTV0NDOAkctwlrdg2Mleramq1ZMU1rGixVhU2a0YwE37/9BU3+41NtebQnFTdiYd4/V59S6R3YbNF4IW7SMOuvvBImjos5JruFpq/2+bdtPQ1Jpc0Ax4RkKGHP9dEvJL7mEfYqmED7EgC/mcI89JLNdiXIR+ThCVbx/4ipVu+QfgMsyI+YIBCGN5q1StAWa36nHfvbI98edukgrlqohGe+CeRMuD6CzxDY7kUbMaadbPDQq2lA4QZFM6ucu6vpQmLsrWEm4pJi1lhWdPbpg+fiH5L6GS8gnf0afHNrfMA= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: DAMON design document uses "bp" for "basis point" in multiple places. Because it is not clearly mentioned, it is difficult to understand what "bp" stands for. Add the clarification. Reported-by: Randy Dunlap Closes: https://lore.kernel.org/107dc6ba-697e-4b25-ba3e-8ce2499cac9a@infradead.org Acked-by: Randy Dunlap Signed-off-by: SJ Park --- Documentation/mm/damon/design.rst | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst index 0a86792f90a18..e82390e77a70a 100644 --- a/Documentation/mm/damon/design.rst +++ b/Documentation/mm/damon/design.rst @@ -445,7 +445,7 @@ users to set the aimed amount of access events to observe via DAMON within given time interval. The target can be specified by the user as a ratio of DAMON-observed access events to the theoretical maximum amount of the events (``access_bp``) that measured within a given number of aggregations -(``aggrs``). +(``aggrs``). The ratio is in basis point (bp or 1/10,000). The DAMON-observed access events are calculated in byte granularity based on DAMON :ref:`region assumption `. For @@ -717,7 +717,8 @@ mechanism tries to make ``current_value`` of ``target_metric`` be same to in microseconds that measured from last quota reset to next quota reset. DAMOS does the measurement on its own, so only ``target_value`` need to be set by users at the initial time. In other words, DAMOS does self-feedback. -- ``node_mem_used_bp``: Specific NUMA node's used memory ratio in bp (1/10,000). +- ``node_mem_used_bp``: Specific NUMA node's used memory ratio in basis point + (bp or 1/10,000). - ``node_mem_free_bp``: Specific NUMA node's free memory ratio in bp (1/10,000). - ``node_memcg_used_bp``: Specific cgroup's node used memory ratio for a specific NUMA node, in bp (1/10,000). -- 2.47.3