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b=WMUgkNxfjifF94LFMFYVhaCi84XVweVc7zQ66jg6AZ6H0gDuYkPI8eP3fRGR5miwf SuRj/CA1VhZFx+2Yp+MOd6bTF0fyg2ByVLOpaQzKPNTCGYqc98A9ZEaCG3KqJx4YRB sdaXP47joRJ7ie786UeULCNAzz2mZ/R4GcogsGoe9kPHnh9HCnrYxZL+Roa0o4EngB ceMNfCE0kRSMiPxjEkqqlL2v3hjNvusV1vqtqpIzkHhcMXt+JEDHR+/g/I9Kp3Rqma pjb28j7PD4HPuyEVdJ+YufORVOhPtW3Vx5AL8023OM1GOtyD0cMzg7BiBAAU0DlIfl 98PtWpmtM8Y+w== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v2 1/7] mm/damon/api: introduce DAMOS_FILTER_TYPE_PROBE_HITS_WSUM Date: Fri, 11 Sep 2026 06:55:03 -0700 Message-ID: <20260911135510.96914-2-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260911135510.96914-1-sj@kernel.org> References: <20260911135510.96914-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: ADFEF1C0006 X-Stat-Signature: t6suwggcycyindhdcg5yw5ok1g1w5rrs X-HE-Tag: 1789134919-170548 X-HE-Meta: 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 AoFnrkwF Exsto/8uUyQzfzv6WbTLglhZAekGK+NuM0gvZhTXmn8x+V7RvlmUxecFtIcpS4UYN5zXfF0M2zXvPyIeDuHwWocZ+Dv7ZV6dX1CUZzLvYX11x9zl8zpg7a1E8GiKEZ3hFayZffWZCR44GSKL9hzXpEAJnK7VGKW3scyN+LSwJxQi9QCokq2q26y21PuHGa0PGVetH18ia/bRiWHVHa+mvigaUhPx1mdUfvk8WM/m411SsyXfdeMvVWHQcZvNr2kUzFfGOIU64htjoIR49HDxUXlvKxQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Update DAMON kernel API to introduce new DAMOS core filter type, PROBE_HITS_WSUM. It will allow API callers to describe the DAMOS action target regions based on their probe_hits weighted sum. For describing the filtering target weighted sum range, add two type-dependent union fields to damos_filter. Signed-off-by: SJ Park --- include/linux/damon.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 16800b3dc379b..9e84bdeb5616d 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -399,14 +399,15 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_UNMAPPED: Unmapped pages. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. + * @DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: probe_hits weighted sum range. * @NR_DAMOS_FILTER_TYPES: Number of filter types. * - * All types except &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET - * are handled by the underlying &struct damon_operations as a part of scheme - * action trying, and therefore accounted as 'tried'. In contrast, - * &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET filters are handled - * by the core layer before trying of the action, and therefore not accounted - * as 'tried'. + * All types except &DAMOS_FILTER_TYPE_ADDR, &DAMOS_FILTER_TYPE_TARGET and + * &DAMOS_FILTER_TYPE_PROBE_HITS_WSUM are handled by the underlying &struct + * damon_operations as a part of scheme action trying, and therefore accounted + * as 'tried'. In contrast, &DAMOS_FILTER_TYPE_ADDR and + * &DAMOS_FILTER_TYPE_TARGET filters are handled by the core layer before + * trying of the action, and therefore not accounted as 'tried'. * * Support for the operations-handled filters depends on the running * &struct damon_operations. @@ -420,6 +421,7 @@ enum damos_filter_type { DAMOS_FILTER_TYPE_UNMAPPED, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, + DAMOS_FILTER_TYPE_PROBE_HITS_WSUM, NR_DAMOS_FILTER_TYPES, }; @@ -434,6 +436,8 @@ enum damos_filter_type { * &damon_ctx->adaptive_targets if @type is * DAMOS_FILTER_TYPE_TARGET. * @sz_range: Size range if @type is DAMOS_FILTER_TYPE_HUGEPAGE_SIZE. + * @range_min: Minimum value of range arguments. + * @range_max: Maximum value of range arguments. * * Before applying the &damos->action to a memory region, DAMOS checks if each * byte of the region matches to this given condition and avoid applying the @@ -450,6 +454,10 @@ struct damos_filter { struct damon_addr_range addr_range; int target_idx; struct damon_size_range sz_range; + struct { + unsigned long range_min; + unsigned long range_max; + }; }; /* private: */ /* List head for siblings. */ -- 2.47.3