From nobody Fri Dec 19 04:51:20 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 295B719DF75; Thu, 19 Dec 2024 04:03:45 +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=1734581026; cv=none; b=ohWfih+hvKbQAbJbtRA7fQz4IJ6+mjcWHVfCxUx9D+y64V9gEoNQDXKRk6lsjvY7OSotg2iToUBDWRbAoeQd+UWeUvifPGLp6UE1TtcUbq1Pky6k167CFm8gYNuTfpIXXzqoyR+UqB2LqAtbQt4U6kTLsDrd1capBGeS0rRMo/Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734581026; c=relaxed/simple; bh=qRmiCMizOQQeo+/I858Y/f5o5hnl0HiSgoRowr7L2/Y=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mxBpXTxAHEmlnAf+zzTa8L6sNeB3gST9HGvfTPg0+k7CRB9p0yuXP2hBSwWQ3QJL0VXm8tlUEQKwDCnUpL8J3ZvTLaXLJEBlFvUu7E/XOvg2vlAnoYRXOVcbB58BuqMvecFv/mj+8dcmeen4VcSorB+oVaa3EB1V+ycOUq6RVyM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iUXxuYoz; 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="iUXxuYoz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 841BEC4CED4; Thu, 19 Dec 2024 04:03:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734581025; bh=qRmiCMizOQQeo+/I858Y/f5o5hnl0HiSgoRowr7L2/Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iUXxuYoz0GNi9lf9CHZM18zuewqVRNsYobwBykPHSYrMV9AgbT2ibgoGTL7yCHIs4 viP8pP4alQGmgJSLHf/I5LsPUACsFYRzpQicIDxhcro7F8wUnWsW0QJrKrCo8NgoEk HUscxtnN3hWLtn3zVIU4krkMQI0vt2dDIKyl6z1/+gNxTaVQamtpETRyvHw3MeDDUQ JG0qHKEokMfFer8zvAjHZZ7iuDhZgllJPQNKHeJp47L2I30y/9tFFNYIYx6/XbXuCJ 5+Szxy6CAkRdObErvHvP4QfbdqQHcpOeXfMxFVtN3yJgfhJubzqYydJoFvAg7koQuU F7bPo+Gki1G/w== From: SeongJae Park To: Cc: kernel-team@meta.com, SeongJae Park , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 06/18] mm/damon/paddr: report filter-passed bytes back for normal actions Date: Wed, 18 Dec 2024 20:03:15 -0800 Message-Id: <20241219040327.61902-7-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241219040327.61902-1-sj@kernel.org> References: <20241219040327.61902-1-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" damon_operations->apply_scheme() implementations are requested to report back how many bytes of the given region has passed DAMOS filter. 'paddr' operations set implementation supports some of region-internal DAMOS filter handling for normal DAMOS actions except DAMOS_STAT action. But, those are not respecting the request. Report the region-internal DAMOS filter-passed bytes back for the actions. Signed-off-by: SeongJae Park --- mm/damon/paddr.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 3530ef9c80bd..5944316a0b4c 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -243,7 +243,8 @@ static bool damos_pa_filter_out(struct damos *scheme, s= truct folio *folio) return false; } =20 -static unsigned long damon_pa_pageout(struct damon_region *r, struct damos= *s) +static unsigned long damon_pa_pageout(struct damon_region *r, struct damos= *s, + unsigned long *sz_filter_passed) { unsigned long addr, applied; LIST_HEAD(folio_list); @@ -272,6 +273,8 @@ static unsigned long damon_pa_pageout(struct damon_regi= on *r, struct damos *s) =20 if (damos_pa_filter_out(s, folio)) goto put_folio; + else + *sz_filter_passed +=3D folio_size(folio); =20 folio_clear_referenced(folio); folio_test_clear_young(folio); @@ -292,7 +295,8 @@ static unsigned long damon_pa_pageout(struct damon_regi= on *r, struct damos *s) } =20 static inline unsigned long damon_pa_mark_accessed_or_deactivate( - struct damon_region *r, struct damos *s, bool mark_accessed) + struct damon_region *r, struct damos *s, bool mark_accessed, + unsigned long *sz_filter_passed) { unsigned long addr, applied =3D 0; =20 @@ -304,6 +308,8 @@ static inline unsigned long damon_pa_mark_accessed_or_d= eactivate( =20 if (damos_pa_filter_out(s, folio)) goto put_folio; + else + *sz_filter_passed +=3D folio_size(folio); =20 if (mark_accessed) folio_mark_accessed(folio); @@ -317,15 +323,17 @@ static inline unsigned long damon_pa_mark_accessed_or= _deactivate( } =20 static unsigned long damon_pa_mark_accessed(struct damon_region *r, - struct damos *s) + struct damos *s, unsigned long *sz_filter_passed) { - return damon_pa_mark_accessed_or_deactivate(r, s, true); + return damon_pa_mark_accessed_or_deactivate(r, s, true, + sz_filter_passed); } =20 static unsigned long damon_pa_deactivate_pages(struct damon_region *r, - struct damos *s) + struct damos *s, unsigned long *sz_filter_passed) { - return damon_pa_mark_accessed_or_deactivate(r, s, false); + return damon_pa_mark_accessed_or_deactivate(r, s, false, + sz_filter_passed); } =20 static unsigned int __damon_pa_migrate_folio_list( @@ -449,7 +457,8 @@ static unsigned long damon_pa_migrate_pages(struct list= _head *folio_list, return nr_migrated; } =20 -static unsigned long damon_pa_migrate(struct damon_region *r, struct damos= *s) +static unsigned long damon_pa_migrate(struct damon_region *r, struct damos= *s, + unsigned long *sz_filter_passed) { unsigned long addr, applied; LIST_HEAD(folio_list); @@ -462,6 +471,8 @@ static unsigned long damon_pa_migrate(struct damon_regi= on *r, struct damos *s) =20 if (damos_pa_filter_out(s, folio)) goto put_folio; + else + *sz_filter_passed +=3D folio_size(folio); =20 if (!folio_isolate_lru(folio)) goto put_folio; @@ -481,14 +492,14 @@ static unsigned long damon_pa_apply_scheme(struct dam= on_ctx *ctx, { switch (scheme->action) { case DAMOS_PAGEOUT: - return damon_pa_pageout(r, scheme); + return damon_pa_pageout(r, scheme, sz_filter_passed); case DAMOS_LRU_PRIO: - return damon_pa_mark_accessed(r, scheme); + return damon_pa_mark_accessed(r, scheme, sz_filter_passed); case DAMOS_LRU_DEPRIO: - return damon_pa_deactivate_pages(r, scheme); + return damon_pa_deactivate_pages(r, scheme, sz_filter_passed); case DAMOS_MIGRATE_HOT: case DAMOS_MIGRATE_COLD: - return damon_pa_migrate(r, scheme); + return damon_pa_migrate(r, scheme, sz_filter_passed); case DAMOS_STAT: break; default: --=20 2.39.5