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Tue, 18 Mar 2025 11:30:30 -0700 (PDT) From: Nhat Pham To: akpm@linux-foundation.org Cc: sj@kernel.org, corbet@lwn.net, linux-mm@kvack.org, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, damon@lists.linux.dev Subject: [PATCH 1/2] mm/damon: implement a new DAMOS filter type for active pages Date: Tue, 18 Mar 2025 11:30:28 -0700 Message-ID: <20250318183029.2062917-2-nphamcs@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250318183029.2062917-1-nphamcs@gmail.com> References: <20250318183029.2062917-1-nphamcs@gmail.com> MIME-Version: 1.0 X-Stat-Signature: 9nmxhwc8ebekwe7ki56gjdxf546fig53 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: A340210000E X-Rspam-User: X-HE-Tag: 1742322631-602498 X-HE-Meta: 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 qGrtg9wu XLtD/u6yLaGavZE1Lcq5MEMKqClQESlw4YZyGxNg/yeMhyubg+5OTLPJ5jKcZxOvCsTkbDzbjsOJCGQRrW5KsAhfWyCNFdaFV2LXx8xewAHiumA9Xhxx07ycxlL5/Qw00GB+2k5K4EkxN2Ax8QKGvs5E2lhUbkrfqRajh4ad+M05UbcxTIcFhEvmNJu4SZ6MvGB1WatLW4DfsuwMJjD7rV6PXQeYbB+cawy9I8YCwMjqgZeDo25Tz4K9I6mkDCX+ss6/ojb5NlYzUBCstEtlD0vygDo9XCsc9GzrFODdVOSQUwHUNRiWqhFjHeHocTUx4d3dycK7283hPacPnBO423A45wvPxNW7f3lCHVtgzu0s350vBlt2NHHiTFMVbktCvB8VB33WljudJxx5ujCO46VQXVU57ahyvjyVNAojl+CA/lzBeFa+SOF6AoE5KwH9uoQVrew50Vd08kgM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Implement a DAMOS filter type for active pages on DAMON kernel API, and add support of it from the physical address space DAMON operations set (paddr). Suggested-by: SeongJae Park Signed-off-by: Nhat Pham Reviewed-by: SeongJae Park --- include/linux/damon.h | 2 ++ mm/damon/paddr.c | 3 +++ mm/damon/sysfs-schemes.c | 1 + 3 files changed, 6 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index 3db4f77261f5..47e36e6ea203 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -334,6 +334,7 @@ struct damos_stat { /** * enum damos_filter_type - Type of memory for &struct damos_filter * @DAMOS_FILTER_TYPE_ANON: Anonymous pages. + * @DAMOS_FILTER_TYPE_ACTIVE: Active pages. * @DAMOS_FILTER_TYPE_MEMCG: Specific memcg's pages. * @DAMOS_FILTER_TYPE_YOUNG: Recently accessed pages. * @DAMOS_FILTER_TYPE_HUGEPAGE_SIZE: Page is part of a hugepage. @@ -355,6 +356,7 @@ struct damos_stat { */ enum damos_filter_type { DAMOS_FILTER_TYPE_ANON, + DAMOS_FILTER_TYPE_ACTIVE, DAMOS_FILTER_TYPE_MEMCG, DAMOS_FILTER_TYPE_YOUNG, DAMOS_FILTER_TYPE_HUGEPAGE_SIZE, diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index b08847ef9b81..1b70d3f36046 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -217,6 +217,9 @@ static bool damos_pa_filter_match(struct damos_filter *filter, case DAMOS_FILTER_TYPE_ANON: matched = folio_test_anon(folio); break; + case DAMOS_FILTER_TYPE_ACTIVE: + matched = folio_test_active(folio); + break; case DAMOS_FILTER_TYPE_MEMCG: rcu_read_lock(); memcg = folio_memcg_check(folio); diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 5023f2b690d6..23b562df0839 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -344,6 +344,7 @@ static struct damon_sysfs_scheme_filter *damon_sysfs_scheme_filter_alloc( /* Should match with enum damos_filter_type */ static const char * const damon_sysfs_scheme_filter_type_strs[] = { "anon", + "active", "memcg", "young", "hugepage_size",