From nobody Thu Oct 9 07:00:57 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A86BE28DF3F; Thu, 19 Jun 2025 22:00:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750370432; cv=none; b=UlzrAtxZRMPN0TTDiOJcz0t/wSio3MpsTO7ougLQ3TfuveV6KCPx/O5R+ONh9CoQAOK/LHAYR/1PK2ef+An0Xv+Hq+AinyBIR6gxljbPqw74BU5rOgAAnhTKPhBHcvfcSue4jJSymin3l1J61r/HGjdEPfE4tDbMOoUZsvE7ucY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750370432; c=relaxed/simple; bh=ruhTjHTMSB8Frh5X86EoKCSKXfbBH40pNj+dni3HQq4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KROiDWR/2pwO91/pyCP4bYxP1UqjH68Gvs4bkGDzcsvy+aUP7LEypXgUyZxJO1fUSgUSKI+PeNBWTixyP9qmY1YaU+IzdDZ4ofUzCvazEB5c8NYFgiubxNxL7WZ+LXGfmWYAtpXqIZurFbTpJ/bIo8y4wniSdbRs4hSeB3obR80= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YfG/klgG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YfG/klgG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0497AC4CEEE; Thu, 19 Jun 2025 22:00:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750370432; bh=ruhTjHTMSB8Frh5X86EoKCSKXfbBH40pNj+dni3HQq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YfG/klgGxqXrLNWew9LBj2e/nPIoTPalafzZNhcp5HHVKp3iKRRBIKkCWni+DGv0N 0Qi4/5YUWVavIluMjGGfBilOoxFMa/oxaniOd/mFbpKwZL+xPcyDyr3S4JIwT8QUtG CWVpyijK7Kf71gE10l5V9dHg5zh8cD6WW5gY7bwsUA0WtxLspMBnFc7Oi7zxMyfldk 4ZsdXXNAxy5US69ahqQEwBf2dK47GeLKlOOkkaRHawCaUysqJaMfMtO34yVs/8jKML fSh8drtWw48On8wB2lHgXhOt74KwLRi3xEqtChhkszltN5kV1fRVJ/IAz3Sd5hkw1t ScbDALkDkkNSQ== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 03/11] mm/damon/core: implement DAMOS_QUOTA_NODE_MEMCG_USED_BP Date: Thu, 19 Jun 2025 15:00:15 -0700 Message-Id: <20250619220023.24023-4-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250619220023.24023-1-sj@kernel.org> References: <20250619220023.24023-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Implement the behavior of DAMOS_QUOTA_NODE_MEMCG_USED_BP. It uses sum of active/inactive anon/file pages of a given cgroup on a given NUMA node as the value of the metric. Signed-off-by: SeongJae Park --- mm/damon/core.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/mm/damon/core.c b/mm/damon/core.c index d675dd932a23..1481b43f2710 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -2021,12 +2022,40 @@ static __kernel_ulong_t damos_get_node_mem_bp( numerator =3D i.freeram; return numerator * 10000 / i.totalram; } + +static unsigned long damos_get_node_memcg_used_bp( + struct damos_quota_goal *goal) +{ + struct mem_cgroup *memcg; + struct lruvec *lruvec; + unsigned long used_pages; + struct sysinfo i; + + rcu_read_lock(); + memcg =3D mem_cgroup_from_id(goal->memcg_id); + mem_cgroup_flush_stats(memcg); + lruvec =3D mem_cgroup_lruvec(memcg, NODE_DATA(goal->nid)); + used_pages =3D lruvec_page_state(lruvec, NR_ACTIVE_ANON); + used_pages +=3D lruvec_page_state(lruvec, NR_INACTIVE_ANON); + used_pages +=3D lruvec_page_state(lruvec, NR_ACTIVE_FILE); + used_pages +=3D lruvec_page_state(lruvec, NR_INACTIVE_FILE); + rcu_read_unlock(); + + si_meminfo_node(&i, goal->nid); + return used_pages * PAGE_SIZE * 10000 / i.totalram; +} #else static __kernel_ulong_t damos_get_node_mem_bp( struct damos_quota_goal *goal) { return 0; } + +static unsigned long damos_get_node_memcg_used_bp( + struct damos_quota_goal *goal) +{ + return 0; +} #endif =20 /* @@ -2062,6 +2091,9 @@ static void damos_set_quota_goal_current_value(struct= damos_quota_goal *goal) case DAMOS_QUOTA_NODE_MEM_FREE_BP: goal->current_value =3D damos_get_node_mem_bp(goal); break; + case DAMOS_QUOTA_NODE_MEMCG_USED_BP: + goal->current_value =3D damos_get_node_memcg_used_bp(goal); + break; case DAMOS_QUOTA_ACTIVE_MEM_BP: goal->current_value =3D damos_get_active_inactive_mem_bp(); break; --=20 2.39.5