From nobody Fri Dec 19 04:58:08 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 9775D1AA791; Thu, 19 Dec 2024 04:03:56 +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=1734581036; cv=none; b=C8seL6wQyX/o6y1wly/CCf6QRTtYtY2N2pRUixTC1firXPn7CX81jQNXV3nJenHHDX+reKHm+tyZEY6WUJHyXlVFm6qdRtHe63HNDHO2XwOUqbMzABXwLW4j9ASd7lyvwyPs/u1dyIPamOo1NVGkJfVSjzfEy8zDgq1RavrVS+s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734581036; c=relaxed/simple; bh=xGeZNDXz9ovPiTqa907jHI/cUugPY9TuP39+tm2J3DI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=JNkgR8X+h/yM/moGOhg1dJ9y1RlK/cYmwwABsQ7x54ydnkOvC2gsMk2CdvOkgj3mDw5fMdAqzTFM5an9s8g9qSqU2JR7dzAp7IkUBlQndKzQDROypD5ubrrLjekTNAxAEIyMG5JTQSDHK4hrDnvAM1JnIXuY+nZDCWp3psAUT1M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YaWwkoMs; 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="YaWwkoMs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E18E7C4CED4; Thu, 19 Dec 2024 04:03:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734581036; bh=xGeZNDXz9ovPiTqa907jHI/cUugPY9TuP39+tm2J3DI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YaWwkoMsUq3M/9y90r30+fdbMg5W+Jtn+IphmKPouGNrvQno6svhKYfNY3O1U7Ziq mNLcPEeBaJaRmMhQ7P0n3pYFyDzFAB73gPOufPWOX9UDzeyWcKaICVL7iUmEWSATe7 u4uhvb0Xa28UgL/G5fN94kmI5VZiaUP5dwaljPbJA2IDw9maXLrBc9vYve1lraJTFe hXVB4X8EYz3EhThDwTJKR+DnvOfYdl9IRscCLTVQTEJp4AXzQ5bfEuYAZhu7TNbotZ BXfCCDArHgTD+uNgbG4FaASYkOCjh5j3mXe0ia+BNc8RxmM4OHlZ4jaEgLN5l2S3S0 G9yqOBRNkt8Vw== 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 15/18] mm/damon/sysfs-schemes: expose per-region filter-passed bytes Date: Wed, 18 Dec 2024 20:03:24 -0800 Message-Id: <20241219040327.61902-16-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" Per-region operations set-handled DAMOS filters passed memory size information is provided to only DAMON core API users. Further expose it to the user space by adding a new DAMON sysfs interface file under each scheme tried region directory. Signed-off-by: SeongJae Park --- mm/damon/sysfs-common.h | 2 +- mm/damon/sysfs-schemes.c | 18 +++++++++++++++++- mm/damon/sysfs.c | 3 ++- 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/mm/damon/sysfs-common.h b/mm/damon/sysfs-common.h index b3f63bc658b7..70d84bdc9f5f 100644 --- a/mm/damon/sysfs-common.h +++ b/mm/damon/sysfs-common.h @@ -48,7 +48,7 @@ void damon_sysfs_schemes_update_stats( void damos_sysfs_populate_region_dir(struct damon_sysfs_schemes *sysfs_sch= emes, struct damon_ctx *ctx, struct damon_target *t, struct damon_region *r, struct damos *s, - bool total_bytes_only); + bool total_bytes_only, unsigned long sz_filter_passed); =20 int damon_sysfs_schemes_clear_regions( struct damon_sysfs_schemes *sysfs_schemes); diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index b447c412b02c..1da0594dde55 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -19,6 +19,7 @@ struct damon_sysfs_scheme_region { struct damon_addr_range ar; unsigned int nr_accesses; unsigned int age; + unsigned long sz_filter_passed; struct list_head list; }; =20 @@ -74,6 +75,15 @@ static ssize_t age_show(struct kobject *kobj, struct kob= j_attribute *attr, return sysfs_emit(buf, "%u\n", region->age); } =20 +static ssize_t sz_filter_passed_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_scheme_region *region =3D container_of(kobj, + struct damon_sysfs_scheme_region, kobj); + + return sysfs_emit(buf, "%lu\n", region->sz_filter_passed); +} + static void damon_sysfs_scheme_region_release(struct kobject *kobj) { struct damon_sysfs_scheme_region *region =3D container_of(kobj, @@ -95,11 +105,15 @@ static struct kobj_attribute damon_sysfs_scheme_region= _nr_accesses_attr =3D static struct kobj_attribute damon_sysfs_scheme_region_age_attr =3D __ATTR_RO_MODE(age, 0400); =20 +static struct kobj_attribute damon_sysfs_scheme_region_sz_filter_passed_at= tr =3D + __ATTR_RO_MODE(sz_filter_passed, 0400); + static struct attribute *damon_sysfs_scheme_region_attrs[] =3D { &damon_sysfs_scheme_region_start_attr.attr, &damon_sysfs_scheme_region_end_attr.attr, &damon_sysfs_scheme_region_nr_accesses_attr.attr, &damon_sysfs_scheme_region_age_attr.attr, + &damon_sysfs_scheme_region_sz_filter_passed_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_scheme_region); @@ -2110,7 +2124,8 @@ void damon_sysfs_schemes_update_stats( */ void damos_sysfs_populate_region_dir(struct damon_sysfs_schemes *sysfs_sch= emes, struct damon_ctx *ctx, struct damon_target *t, - struct damon_region *r, struct damos *s, bool total_bytes_only) + struct damon_region *r, struct damos *s, bool total_bytes_only, + unsigned long sz_filter_passed) { struct damos *scheme; struct damon_sysfs_scheme_regions *sysfs_regions; @@ -2135,6 +2150,7 @@ void damos_sysfs_populate_region_dir(struct damon_sys= fs_schemes *sysfs_schemes, region =3D damon_sysfs_scheme_region_alloc(r); if (!region) return; + region->sz_filter_passed =3D sz_filter_passed; list_add_tail(®ion->list, &sysfs_regions->regions_list); sysfs_regions->nr_regions++; if (kobject_init_and_add(®ion->kobj, diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 224873ca8aa6..deeab04d3b46 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1461,7 +1461,8 @@ static void damon_sysfs_schemes_tried_regions_upd_one= (void *data, struct damon_c =20 damos_sysfs_populate_region_dir( sysfs_kdamond->contexts->contexts_arr[0]->schemes, - ctx, t, r, s, walk_data->total_bytes_only); + ctx, t, r, s, walk_data->total_bytes_only, + sz_filter_passed); } =20 static int damon_sysfs_update_schemes_tried_regions( --=20 2.39.5