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b=Vp4KZOl31dlS71Xlig/awbyEcGBsaOfBoJ+8S6UPztXW16Vw4bjbpuqrkKntVm8ss T8nGpBDS3+/5j9dkRdcMqgMO6s7KBndqZWWDcpWg/ZwDY3aq3TCBYUI+hF5X+BWxxM b9mnYwiDxLRZ0NrfxrZXw3Vf07NoBazywfbkNtH/dYOKuMlkTZm5aThKBvGIrM1r+K J0saQ5JhTpBXPyExoHEdo/nccOYpzLdWCYva1ntd5sVhiWhlDA/2NiilpDqzk8onrh X/S71liwj/HGPJJuaGxwMWGSgzVtOGrL/ZqQI8mmRzU+IhpoXqrylo08U4IYOQhsN0 CgyF/vHt3r4Tw== From: SJ Park To: Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 1/8] mm/damon/api: introduce DAMON_FILTER_TYPE_HUGEPAGE_SIZE Date: Sun, 13 Sep 2026 10:11:23 -0700 Message-ID: <20260913171133.102366-2-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260913171133.102366-1-sj@kernel.org> References: <20260913171133.102366-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: wbzs7n4tngajhhti68ix49d9psrms63n X-Rspamd-Queue-Id: D5C9D1C0004 X-HE-Tag: 1789319503-770553 X-HE-Meta: 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 LEupsLG2 ren2VdVOSvhLyffOLw9tib++ACORFKnAd90mlFgLgn27SjJJSdmlDzQHqgG9t4n1q96dQVSwfcgnKuf3D1yOGbaVQ4CkLaIq9fzwMDRp0J+9525/dMU8fl5MQRqj1sWxFZfDJQP9A4Ix9248QuRPd3srBZZ52y4atg6hYrum5QWhmvBMrY/6Wlu6TdKdcj61cT9EOwhzAjH7N0gIcF9uhE/Wxn0jLinGW+I6eBTYYgb2hphjaF4Dp9SeNXmItt6Ru8FP9IDw0ggxpq+z9qWqKHPYjmAxZSc3XaWdLwBC1PL/mECJjpfEeiTeQAOt2nin9mSBK/algASdDtphiFVWd5A2ffFTjTGTX4y5c Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Introduce a new data attribute probe filter type, hugepage_size. It will work for memory that is backed by a hugepage of a given size range. Add a new damon_filter_type enum DAMON_FILTER_TYPE_HUGEPAGE_SIZE to identify the type. Add two new fields in the damon_filter struct for saving the size range. Signed-off-by: SJ Park --- include/linux/damon.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 4be7d1df8e71f..bbb190b474015 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -783,12 +783,14 @@ struct damon_prep { * @DAMON_FILTER_TYPE_MEMCG: Specific memcg's pages. * @DAMON_FILTER_TYPE_PGIDLE_UNSET: Pgidle is unset. * @DAMON_FILTER_TYPE_PGIDLE_SET: Pgidle is set. + * @DAMON_FILTER_TYPE_HUGEPAGE_SIZE: Page is part of a hugepage. */ enum damon_filter_type { DAMON_FILTER_TYPE_ANON, DAMON_FILTER_TYPE_MEMCG, DAMON_FILTER_TYPE_PGIDLE_UNSET, DAMON_FILTER_TYPE_PGIDLE_SET, + DAMON_FILTER_TYPE_HUGEPAGE_SIZE, }; /** @@ -798,6 +800,8 @@ enum damon_filter_type { * @matching: Whether this filter is for the type-matching ones. * @allow: Whether the @type-@matching ones should pass this filter. * @memcg_id: Memcg id of the question if @type is DAMON_FILTER_MEMCG. + * @range_min: Minimum value of range arguments. + * @range_max: Maximum value of range arguments. */ struct damon_filter { enum damon_filter_type type; @@ -805,6 +809,10 @@ struct damon_filter { bool allow; union { u64 memcg_id; + struct { + unsigned long range_min; + unsigned long range_max; + }; }; /* private: */ /* Siblings list. */ -- 2.47.3