From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6B88ACD4F25 for ; Thu, 14 May 2026 14:09:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9DC256B008C; Thu, 14 May 2026 10:09:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 966026B0093; Thu, 14 May 2026 10:09:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6F4B96B0096; Thu, 14 May 2026 10:09:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 3628A6B0098 for ; Thu, 14 May 2026 10:09:22 -0400 (EDT) Received: from smtpin27.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id EEACD8D9CE for ; Thu, 14 May 2026 14:09:21 +0000 (UTC) X-FDA: 84766207722.27.FE0EE89 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf28.hostedemail.com (Postfix) with ESMTP id 3909EC0005 for ; Thu, 14 May 2026 14:09:20 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=XginhJKP; spf=pass (imf28.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1778767760; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=YWGtfg47Se7Da40hAHGnDQn7jf9NnP4tqy+6tZ0UYZo=; b=nvLC0gRM5SrB/WR2GIGj8yj8qDHU+A3ll2Kp5M7j6VYF9FVt043b6qRFA9Ph3lhCegTV/2 oIxLUOINcfUNuuvBFGDMtH+TPFHm416KmI9/G2cxKETvS3GLx4Wac90QJ+3PT79QRX3b9P Bv2nAy4bypPeBsFMMoc4j9JOILmHxb4= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=XginhJKP; spf=pass (imf28.hostedemail.com: domain of sj@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1778767760; a=rsa-sha256; cv=none; b=vU+wh0fn89kZ6B6CbEoL4ZaCR0fiLyZVVPvQfFHLJTNFwgeYmFhgGBZyCd/fd2Kva9BbSz l9AJ44Ar7u5dUMBJaqr36yKN5gQs/tseuDkvxpbZPDQBigCgb+O/+PEOEJLrkP9ZfLKNFd wGIDFutP12IIuCzCViP8cAsEciTZmaY= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 6660A444DB; Thu, 14 May 2026 14:09:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D166C2BCF5; Thu, 14 May 2026 14:09:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778767759; bh=bOFWp1WguP8IVmbjiUHmaSxJjCXFrz74gfek9x1LLRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XginhJKPG2L6VcT8rP5zR3FcA0OqdZrh3UKez3tLDfENI5a4siRHiuX+eNzZwHGte v5xiFd0NaaYsfbIg8xwzdoVOL2GANxW9D/MDX33CxK9Yg54fEeXXz8m9T12NPyjL51 5tHo+5aEHGssJyG+0rTZLvSeACGY037cQQD+OpTWYtNbpZAzNszBiAzg7W4xKzJtM0 fII9nUKUCdN72JiTkm5PSoPJCUqk7FdNjNDsmYjEWbJ5voSNcnwqk62BhV0Mvl5VL8 1LLjmINCgLHXHO24IbRrfIGHHn41i8jcbNGLsd9cv7yJ9XEE7r+723FCspsFPna+2r XHlXOyiObNMvA== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v2.1 03/28] mm/damon/core: introduce damon_filter Date: Thu, 14 May 2026 07:08:36 -0700 Message-ID: <20260514140904.119781-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260514140904.119781-1-sj@kernel.org> References: <20260514140904.119781-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 3909EC0005 X-Stat-Signature: f5nnufq8oe44ggg8rn5qzp14jg7n7qeb X-HE-Tag: 1778767760-697797 X-HE-Meta: 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 jUWeBb1+ 3tzuxOgP/KPNjQAJ8tpI5nEOIugHQwuctG2HmRkq/5KOZhFon52uxpJXLxInla04/cNwPrEZLVWbxoQ3IE2KkG9asgaOzrNeLd+covmYXC2D64iQlGzAjez55e52VuZINeC+iqsHpRQ7zpEOMYJUNqc5uNkoKnv3NJKLwCkfZUcuJNDuKnfKGZNxSGxkX/qnJP8QtLZy+5FKqZ94eYyqmvMhkjM3kC8dpSlbqXTLbgA/b1Lb1seU6iOWaUkFBZ3aLtZeQU6jsP9ROpEFFUKD+1dOSag== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Define a data structure for constructing damon_probe's attributes check, namely damon_filter. It is very similar to damos_filter but works only for monitoring purposes. Also embed that into damon_probe, implement essential handling of the link, with fundamental helpers. Signed-off-by: SeongJae Park --- include/linux/damon.h | 36 ++++++++++++++++++++++++++++++++++++ mm/damon/core.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+) diff --git a/include/linux/damon.h b/include/linux/damon.h index dc53bc3da74b3..95b2c508a63ea 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -730,12 +730,38 @@ struct damon_intervals_goal { unsigned long max_sample_us; }; +/** + * enum damon_filter_type - Type of &struct damon_filter + * + * @DAMON_FILTER_TYPE_ANON: Anonymous pages. + */ +enum damon_filter_type { + DAMON_FILTER_TYPE_ANON, +}; + +/** + * struct damon_filter - DAMON region filter for &struct damon_probe. + * + * @type: Type of the region. + * @matcing: Whether this filter is for the type-matching ones. + * @allow: Whether the @type-@matching ones should pass this filter. + * @list: Siblings list. + */ +struct damon_filter { + enum damon_filter_type type; + bool matching; + bool allow; + struct list_head list; +}; + /** * struct damon_probe - Data region attribute probe. * + * @filters: Filters for assessing if a given region is for this probe. * @list: Siblings list. */ struct damon_probe { + struct list_head filters; struct list_head list; }; @@ -910,6 +936,12 @@ static inline unsigned long damon_sz_region(struct damon_region *r) return r->ar.end - r->ar.start; } +#define damon_for_each_filter(f, p) \ + list_for_each_entry(f, &p->filters, list) + +#define damon_for_each_filter_safe(f, next, p) \ + list_for_each_entry_safe(f, next, &p->filters, list) + #define damon_for_each_probe(p, ctx) \ list_for_each_entry(p, &ctx->probes, list) @@ -957,6 +989,10 @@ static inline unsigned long damon_sz_region(struct damon_region *r) #ifdef CONFIG_DAMON +struct damon_filter *damon_new_filter(enum damon_filter_type type, + bool matching, bool allow); +void damon_add_filter(struct damon_probe *probe, struct damon_filter *f); + struct damon_probe *damon_new_probe(void); void damon_add_probe(struct damon_ctx *ctx, struct damon_probe *probe); diff --git a/mm/damon/core.c b/mm/damon/core.c index 8a55cc61d2972..d01417955a3b4 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -113,6 +113,31 @@ int damon_select_ops(struct damon_ctx *ctx, enum damon_ops_id id) return err; } +struct damon_filter *damon_new_filter(enum damon_filter_type type, + bool matching, bool allow) +{ + struct damon_filter *filter; + + filter = kmalloc_obj(*filter); + if (!filter) + return NULL; + filter->type = type; + filter->matching = matching; + filter->allow = allow; + INIT_LIST_HEAD(&filter->list); + return filter; +} + +void damon_add_filter(struct damon_probe *p, struct damon_filter *f) +{ + list_add_tail(&f->list, &p->filters); +} + +static void damon_free_filter(struct damon_filter *f) +{ + kfree(f); +} + struct damon_probe *damon_new_probe(void) { struct damon_probe *p; @@ -120,6 +145,7 @@ struct damon_probe *damon_new_probe(void) p = kmalloc_obj(*p); if (!p) return NULL; + INIT_LIST_HEAD(&p->filters); INIT_LIST_HEAD(&p->list); return p; } @@ -136,6 +162,10 @@ static void damon_del_probe(struct damon_probe *p) static void damon_free_probe(struct damon_probe *p) { + struct damon_filter *f, *next; + + damon_for_each_filter_safe(f, next, p) + damon_free_filter(f); kfree(p); } -- 2.47.3