From nobody Mon Apr 6 10:45:06 2026 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 4E4573C062B for ; Tue, 10 Mar 2026 16:25:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773159939; cv=none; b=T6W18XO1kQm9nd7k5kcnagx8rzkzU6dRF613o9YzFtBkEeSw5JWJbzsAlAZzJbe0LFknVIYNCz5z70ezSiqoCepHHoF/vLScq5MWB5kTjsbcICxF5qUM85ILm5LoRE3mSMfYnJ7MXiSCCoIc68GPqJVdrL0cVM2j+WsTBYgTDnY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773159939; c=relaxed/simple; bh=VI2PM21MrOU5iz4b76NvZggsYEB0wlt6xKlix1OQhQc=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ZLPS0pTizt1ajVHxLJwG/F7whnCLP9z+2GRNolOIfnM64Mhr5d3PxERDTFff24PVqi+fgsOJRNasPxMujKm58NINGu0QMcB4wyhRLxDiNhSK4RgnsWAXCEXU+EkvrMZZq4WpNSmQ7AgIHBELfaV0IEoeYiPArtVOlA2osIV56ys= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei-partners.com; spf=pass smtp.mailfrom=huawei-partners.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei-partners.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei-partners.com Received: from mail.maildlp.com (unknown [172.18.224.83]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4fVfNd2Dg6zJ469b; Wed, 11 Mar 2026 00:24:49 +0800 (CST) Received: from mscpeml500003.china.huawei.com (unknown [7.188.49.51]) by mail.maildlp.com (Postfix) with ESMTPS id 23EAB40086; Wed, 11 Mar 2026 00:25:34 +0800 (CST) Received: from mscphis01197.huawei.com (10.123.65.218) by mscpeml500003.china.huawei.com (7.188.49.51) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 10 Mar 2026 19:25:33 +0300 From: To: , , , , , , , , , , Subject: [RFC PATCH v2 2/4] mm/damon: Support for synchrounous huge pages collapse Date: Tue, 10 Mar 2026 16:24:18 +0000 Message-ID: <20260310162420.4180562-3-gutierrez.asier@huawei-partners.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260310162420.4180562-1-gutierrez.asier@huawei-partners.com> References: <20260310162420.4180562-1-gutierrez.asier@huawei-partners.com> 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 X-ClientProxiedBy: mscpeml500004.china.huawei.com (7.188.26.250) To mscpeml500003.china.huawei.com (7.188.49.51) Content-Type: text/plain; charset="utf-8" From: Asier Gutierrez Signed-off-by: Asier Gutierrez Co-developed-by: Anatoly Stepanov --- include/linux/damon.h | 1 + mm/damon/vaddr.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index a4fea23da857..a9cf17b9e8fa 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -142,6 +142,7 @@ enum damos_action { DAMOS_LRU_DEPRIO, DAMOS_MIGRATE_HOT, DAMOS_MIGRATE_COLD, + DAMOS_COLLAPSE, DAMOS_STAT, /* Do nothing but only record the stat */ NR_DAMOS_ACTIONS, }; diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 729b7ffd3565..36791a9a1094 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -969,6 +969,9 @@ static unsigned long damon_va_apply_scheme(struct damon= _ctx *ctx, case DAMOS_NOHUGEPAGE: madv_action =3D MADV_NOHUGEPAGE; break; + case DAMOS_COLLAPSE: + madv_action =3D MADV_COLLAPSE; + break; case DAMOS_MIGRATE_HOT: case DAMOS_MIGRATE_COLD: return damos_va_migrate(t, r, scheme, sz_filter_passed); --=20 2.43.0