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b=KH2ctPE3z+F28KIea6irxq3fcBYKl/QSEhQUsM/8PCcQDij7ql6+QWVLIT7XNCHSq HoCsNFgqLv1hiHcDQWck4HKOdDUBfG9Ss6xuNJNwKXgKB8aQgX2GTvJ00dWD6HFBhM WZPqFaMcDauSCO3Ms1U2z+FymCK1cZwua/EBFh9Ek79VkpjsV/i5OM4rZiaLGGmMPD yP1qsEvC64VWmvN4jRothMj+Y7bRgw5KTLLp9a2mCsrbaz3gDWWOvQXl4qk9bo3mt4 YusN/dCrmE49HH6Wym/QDLdLSx6Tu/nW8R1hNNrbKEQjwHJdAaVKXh97qRuJmi0i6N DZyoPHUCVjm+Q== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v3 22/28] mm/damon/core: introduce DAMON_FILTER_TYPE_MEMCG Date: Sat, 16 May 2026 11:37:03 -0700 Message-ID: <20260516183712.81393-23-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260516183712.81393-1-sj@kernel.org> References: <20260516183712.81393-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: D94B54000B X-Rspam-User: X-Stat-Signature: 51i8cysx7wkxg94ag1ykcnc9pfm7kaxq X-HE-Tag: 1778956653-558660 X-HE-Meta: U2FsdGVkX186NYbhDqELx3Mx75kEcnkUE+8eSPIO7Pa9k5vEjQFxbNBSTZ2csdDwdMJJq4y6QoRUV46hW708VIlByAOUavvD4pIVdqhiPzYCbj2Revr1j0OzxEmasl5XlMMS8Pt87ezkF2wXywY49fJUaq7f03uoFrF5bSu2DSpL7HCzi7JKZh8iSMOWMnEk9wQCUFosMgm7FI1vnuDJN2cNG2bJ0oBIHdLW61/hTdyBrVw7/p/HGKhVqUE6H+T8pW+eWdnFjJ1JmmWRBTusjTcU91Ig2YO0gXRBCdln5RmPq23SYEFZ43ry2XtiA9ewEpe24gomwXAMx89rDPneJtapBbQFK6pOWrXC9YM77yNqSnMWes5qgUV7jMX3gij1i5qPMsE+MR2+c/SSUZIK8XDRStO91ReEJl0R8W1QCPsPdI5+r0erdij2aLE/Njb3GA5F1DHpkq/g9BOWnuwqjA4EwLK7yzAlq+2r4FQ1zvrFRvkiauOjzzmKhwlvo/iSvufClc6NcWyIkgvF3lrtMjuwFSrqdth69y44avEY5OtNAh0q7t8pl/iNF0W4rLrMLBxCOE1FtjFjWDTwTM6B/y8VE8IPMTgaWSSnlc83vCU22R6n08zNhnlbTIpPCn+qB/R8Pe0wU1MFji+CRsuttSFXmJZ48WDi8YQxwDZe/zxVA0TK65HOzj51weYOLjzqhtX/nAOickpGsGRtH+LyGkJEwTri9+EGRYT76Scs33AuZX88X0aQhSKcisrK+Kq9nHF1kkGIlT/EsaV9UvJo/vcU1xEwmDzHXZVWrSRvf2O+dz7oQa0HDN0ccb9pLXxFIZn62of4CyifqOPU9A25jCW2oWklw5aq3fyMrH29Cg6rlM9j/UMcuYDmfz92AkhJk3qNqzIQUiRJZuX/0L+7lDWOZLP3X1OjaNDHknmaYoiRArjtxiK96ZZsRZ2cmBsYhG/lNnKymW3MVd7gsCm ++aRzVJY uvsCElxo/bKPUXZuTEhIpzZMQpOmVgarykwRw3Igd5AIVliu2Pcf+zihikIa+LpIDxU6wrjqv/4mmq0jlgx7mfVKjqFih+lnwruhKo99tFuTP3FZ5SdVCUHjNOQM8NG9ojLhB3vUzq4FxAbdiyOFeyToRnud5nafL9BHX8dSv0KyosMmcKKuzEc8vSVP+gOAfhDTLd8DL7/bclKJXdWZ3hbpUMlvP/wBXol3Pok/KOwx0axFmJ4BSj2qmwIlfbmLYWy3KrV9sqf3hdLa7tJJ5maOldQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Belonging memory cgoup is another data attribute that can be useful to monitor. Introduce a new DAMON filter type, namely DAMON_FILTER_TYPE_MEMCG, for monitoring of this attribute. Signed-off-by: SeongJae Park --- include/linux/damon.h | 6 ++++++ mm/damon/core.c | 14 ++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index d3b6296700a08..56a76781fde22 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -733,9 +733,11 @@ struct damon_intervals_goal { * enum damon_filter_type - Type of &struct damon_filter * * @DAMON_FILTER_TYPE_ANON: Anonymous pages. + * @DAMON_FILTER_TYPE_MEMCG: Specific memcg's pages. */ enum damon_filter_type { DAMON_FILTER_TYPE_ANON, + DAMON_FILTER_TYPE_MEMCG, }; /** @@ -744,12 +746,16 @@ enum damon_filter_type { * @type: Type of the region. * @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. * @list: Siblings list. */ struct damon_filter { enum damon_filter_type type; bool matching; bool allow; + union { + u64 memcg_id; + }; struct list_head list; }; diff --git a/mm/damon/core.c b/mm/damon/core.c index 11b513eb077fe..332d13d9f8603 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1422,6 +1422,13 @@ static void damon_commit_filter(struct damon_filter *dst, dst->type = src->type; dst->matching = src->matching; dst->allow = src->allow; + switch (dst->type) { + case DAMON_FILTER_TYPE_MEMCG: + dst->memcg_id = src->memcg_id; + break; + default: + break; + } } static int damon_commit_filters(struct damon_probe *dst, @@ -1446,6 +1453,13 @@ static int damon_commit_filters(struct damon_probe *dst, src_filter->matching, src_filter->allow); if (!new_filter) return -ENOMEM; + switch (src_filter->type) { + case DAMON_FILTER_TYPE_MEMCG: + new_filter->memcg_id = src_filter->memcg_id; + break; + default: + break; + } damon_add_filter(dst, new_filter); } return 0; -- 2.47.3