From nobody Mon Feb 9 23:16:05 2026 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABF9F1459E6 for ; Thu, 4 Jul 2024 04:32:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720067547; cv=none; b=k0PuzpWUDI3SwesMdwVDehaHD3KlH1rFXWEe6nxptwzrNLass+HNMTru3SPnbMO8oWFlL/iBIZoyxU5pn7EM0CeqsFN5Dc2ev69GJKaAC0a6mQXwLEUlGe3UpwgxVvBqbACQ6ylSknVbSunrN4JHdpX0nV31RRUAkqsrL5KjrGQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720067547; c=relaxed/simple; bh=DDM1CyCr7sw5ilryaMX/F+7wIWAeswYRZs0JW6CsuOk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=joUxN9BIxbOel/k6OzjgP5cg/LYTLjC3gmhYzBxoneh7tD/azqw9EnjMbD899Pb9dWN7EYWQZO3Ju0/YpH9iVcQh8zl1FbyDrKaot2/MVbgB771iUSdfrtvpj8WJyCAsLOyAMdJJtbbUr3hH2EBHHNO4hut6Wp5k7rnVeQACe4o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; arc=none smtp.client-ip=195.135.223.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 41E2C1FCF8; Thu, 4 Jul 2024 04:32:24 +0000 (UTC) Authentication-Results: smtp-out2.suse.de; none Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 22FA613889; Thu, 4 Jul 2024 04:32:23 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id YJuNA9clhmbnDAAAD6G6ig (envelope-from ); Thu, 04 Jul 2024 04:32:23 +0000 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Peter Xu , Muchun Song , David Hildenbrand , SeongJae Park , Miaohe Lin , Michal Hocko , Matthew Wilcox , Christophe Leroy , Oscar Salvador Subject: [PATCH 27/45] mm/damon: Create damon_young_pud_entry to handle PUD-mapped hugetlb vmas Date: Thu, 4 Jul 2024 06:31:14 +0200 Message-ID: <20240704043132.28501-28-osalvador@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240704043132.28501-1-osalvador@suse.de> References: <20240704043132.28501-1-osalvador@suse.de> 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-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spam-Flag: NO X-Spam-Score: -4.00 X-Spam-Level: X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Queue-Id: 41E2C1FCF8 X-Rspamd-Action: no action X-Spamd-Result: default: False [-4.00 / 50.00]; REPLY(-4.00)[] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org Content-Type: text/plain; charset="utf-8" Normal THP cannot be PUD-mapped (besides devmap), but hugetlb can, so create damon_young_pud_entry in order to handle PUD-mapped hugetlb vmas. Signed-off-by: Oscar Salvador --- mm/damon/vaddr.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 00d32beffe38..2d5ad47b9dae 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -434,6 +434,39 @@ struct damon_young_walk_private { bool young; }; =20 +static int damon_young_pud_entry(pmd_t *pud, unsigned long addr, + unsigned long next, struct mm_walk *walk) +{ +#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES + spinlock_t *ptl; + struct folio *folio; + struct damon_young_walk_private *priv =3D walk->private; + + ptl =3D pud_huge_lock(vma, pud); + if (!ptl) + return 0; + + if (!pud_present(*pud)) + goto out; + + folio =3D pfn_folio(pud_pfn(*pud)); + if (!folio) + goto out; + folio_get(folio); + + if (pud_young(pmde) || !folio_test_idle(folio) || + mmu_notifier_test_young(walk->mm, addr)) + priv->young =3D true; + + *priv->folio_sz =3D huge_page_size(h); + folio_put(folio); +out: + spin_unlock(ptl); +#endif + return 0; +} + + static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr, unsigned long next, struct mm_walk *walk) { @@ -537,6 +570,7 @@ static int damon_young_hugetlb_entry(pte_t *pte, unsign= ed long hmask, #endif /* CONFIG_HUGETLB_PAGE */ =20 static const struct mm_walk_ops damon_young_ops =3D { + .pud_entry =3D damon_young_pud_entry, .pmd_entry =3D damon_young_pmd_entry, .hugetlb_entry =3D damon_young_hugetlb_entry, .walk_lock =3D PGWALK_RDLOCK, --=20 2.26.2