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 0D2981A9B5C; Thu, 19 Dec 2024 04:03:55 +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=1734581035; cv=none; b=UlolZEdufUtkVZYMD2ss9X7cWag3U1WRyYnfayDyeSVfyJppF/HnW4SP4CYdoWRzZn1r60VHf3+QHrVAH9CsnODNpcoF3CoOPuBljRzMsZB78iDu0AsIN8ToYHbchVJPkLbc/kuCmNXsPSQgYNn0igOujyNjEimbXlmlFCj9nuA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734581035; c=relaxed/simple; bh=B/+pkZ34Zt3Ov15iD+IrfcocGY4pQLzf/O+oQbY1lSY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=R9iAIpDW69xelIvJqYyd39Zi+eprQxY9bJPQ9v2cWEdbQjICQxATFOjrINd7Bsjtugkhv2/VsbQ5jTxr3hYF5PvqBs0nYedC9fQQHnU/Q1ISRufVAQKVjBUoWu9VRqXqkFvlvSLL84IJxeJjOMMqQcx8w0eb/5A2TetIWya+bUY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rzq44vv7; 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="rzq44vv7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF8A2C4CEDE; Thu, 19 Dec 2024 04:03:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734581034; bh=B/+pkZ34Zt3Ov15iD+IrfcocGY4pQLzf/O+oQbY1lSY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rzq44vv7oD0N2wj95XS2ZTJ1sSLOaqBIUq36nn7pmxoSw5ZpgQ3g9DCAnXg0Anw8n bFIpSdP7Yv1yOzha/Bw5/GTL0aH+9FuEQETPdZSKYcXkSx1h6kbPkkW7alb6gbJfSh lfXrUimMecgBRoGXL66pD0XsJ7rhIasRwOt9nREX/c1KWizBC/YE4+yeambCjMRrqi 2ekvViNaTS5YuWgpQDNpxWjG0XZ0LiiNSELDOa1vjr5LiscPbC4DliiXVSmov/pX6q ou0yrGFJ+KLQ9Z9woz12s9t7dC0cCGxb2Pzh0a2YEXdJgzisKDiD2fEyjo0tM1gGOB jnrg4qfav135w== 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 14/18] mm/damon/core: pass per-region filter-passed bytes to damos_walk_control->walk_fn() Date: Wed, 18 Dec 2024 20:03:23 -0800 Message-Id: <20241219040327.61902-15-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" Total size of memory that passed DAMON operations set layer-handled DAMOS filters per scheme is provided to DAMON core API and ABI (sysfs interface) users. It is useful, but that for each region can be more fine-grained information. Provide it to users of DAMON core API, specifically damos_walk() users, by passing the data to damos_walk_control->walk_fn(). Signed-off-by: SeongJae Park --- include/linux/damon.h | 2 +- mm/damon/core.c | 7 ++++--- mm/damon/sysfs.c | 2 +- 3 files changed, 6 insertions(+), 5 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index 4a68bb38aad5..b88f710297a9 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -393,7 +393,7 @@ struct damos; struct damos_walk_control { void (*walk_fn)(void *data, struct damon_ctx *ctx, struct damon_target *t, struct damon_region *r, - struct damos *s); + struct damos *s, unsigned long sz_filter_passed); void *data; /* private: internal use only */ /* informs if the kdamond finished handling of the walk request */ diff --git a/mm/damon/core.c b/mm/damon/core.c index f7736df4f6c8..f566cdcbb434 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1437,7 +1437,8 @@ static bool damos_filter_out(struct damon_ctx *ctx, s= truct damon_target *t, * installed by damos_walk() and not yet uninstalled, invoke it. */ static void damos_walk_call_walk(struct damon_ctx *ctx, struct damon_targe= t *t, - struct damon_region *r, struct damos *s) + struct damon_region *r, struct damos *s, + unsigned long sz_filter_passed) { struct damos_walk_control *control; =20 @@ -1446,7 +1447,7 @@ static void damos_walk_call_walk(struct damon_ctx *ct= x, struct damon_target *t, mutex_unlock(&ctx->walk_control_lock); if (!control) return; - control->walk_fn(control->data, ctx, t, r, s); + control->walk_fn(control->data, ctx, t, r, s, sz_filter_passed); } =20 /* @@ -1566,7 +1567,7 @@ static void damos_apply_scheme(struct damon_ctx *c, s= truct damon_target *t, sz_applied =3D c->ops.apply_scheme(c, t, r, s, &sz_ops_filter_passed); } - damos_walk_call_walk(c, t, r, s); + damos_walk_call_walk(c, t, r, s, sz_ops_filter_passed); ktime_get_coarse_ts64(&end); quota->total_charged_ns +=3D timespec64_to_ns(&end) - timespec64_to_ns(&begin); diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index cf8fb5a963d6..224873ca8aa6 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1454,7 +1454,7 @@ struct damon_sysfs_schemes_walk_data { /* populate the region directory */ static void damon_sysfs_schemes_tried_regions_upd_one(void *data, struct d= amon_ctx *ctx, struct damon_target *t, struct damon_region *r, - struct damos *s) + struct damos *s, unsigned long sz_filter_passed) { struct damon_sysfs_schemes_walk_data *walk_data =3D data; struct damon_sysfs_kdamond *sysfs_kdamond =3D walk_data->sysfs_kdamond; --=20 2.39.5