From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 592DD3C13FE; Wed, 24 Jun 2026 14:20:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782310836; cv=none; b=AhkYjDFV35KtY/pazYWmSp2mMjOjiXWPZDWHPv6owl8ieq+xRToKVlmGoyB4WE1elPmSXwxfejxoyPFyTh1Evr9pYe5dVtk5okbbQuw3cc3Zz2JSG7ZNqSK3QAQB6dL/nZA8gEG1xYwXvJ+Kyf2GrcHjWzvTuIebkuR3iGx9GnE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782310836; c=relaxed/simple; bh=Xqgbuq/B7lsiyjC9z+Hv2/6FwxWyYmnX8cCNrmIZCSc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qw9TmaKk/+JcOnG/lwsscCOBVjQZCb4NwRsmsL6pUCMMIzWY/+8zYobFLLUhzSKs4cu7/RteNpQPyHlZApLqpM2o5ZTJbevDQBi9oFdV7hv5SQfhrghN1pUS+xxKkmGYP+LMgpU5msss7Ctyn6Eqquq++ztayWz8RRgf/laEDGg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DyfqY9FG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DyfqY9FG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55AA91F000E9; Wed, 24 Jun 2026 14:20:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782310834; bh=EUjYA4YKs65xmCeOj45MTc/zAzF9jp3SHtMdBi79Pxo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DyfqY9FGL34hmvkr50EjzNCE03Mzek6Y95cn6oNRfig2AXRzDllUwH3aAcoCgCxpq Pi/hx1N11V6IwhN4szDSPNzOQoJeWyPUTFkKmC705pNubTx6Bcrg6iBFAnXw2rnw50 qC9QfxBw9FbDh/t0SHhBFQCirZQpoNwMm4FPMwJvzHe3Zi2S9Hz0ZsFXyv17vWYNBW /kC7N2xKGa8C430pW8n4nGUlJilTXGp3JZMRA4clWvh7NpLCqXlYwthBsXgABZkerF 5Vpj47B50r+czaKNstGy0zGJGfBmB9vVErCVF5s1Q63xn4CRS3KUiTk4f5RVUyrmXD tanr1ikilfjVg== 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 09/11] mm/damon/sysfs: split probe setup function out Date: Wed, 24 Jun 2026 07:20:05 -0700 Message-ID: <20260624142008.87180-10-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260624142008.87180-1-sj@kernel.org> References: <20260624142008.87180-1-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: 8bit damon_sysfs_set_probes() function is relatively long. It has two nested loop for setting two nested entities, namely probe and filter. Split out the probe level setup for readability. Signed-off-by: SeongJae Park --- mm/damon/sysfs.c | 80 ++++++++++++++++++++++++++++-------------------- 1 file changed, 46 insertions(+), 34 deletions(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index ffbc99411f53b..b662afd41791d 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1911,47 +1911,59 @@ static int damon_sysfs_set_attrs(struct damon_ctx *ctx, return damon_set_attrs(ctx, &attrs); } -static int damon_sysfs_set_probes(struct damon_ctx *ctx, - struct damon_sysfs_probes *sys_probes) +static int damon_sysfs_set_probe(struct damon_probe *probe, + struct damon_sysfs_probe *sys_probe) { + struct damon_sysfs_filters *sys_filters; int i; - for (i = 0; i < sys_probes->nr; i++) { - struct damon_sysfs_filters *sys_filters = - sys_probes->probes_arr[i]->filters; - struct damon_probe *c; - int j; + sys_filters = sys_probe->filters; + if (!sys_filters) + return 0; - if (!sys_filters) - continue; - c = damon_new_probe(); - if (!c) + for (i = 0; i < sys_filters->nr; i++) { + struct damon_sysfs_filter *sys_filter = + sys_filters->filters_arr[i]; + struct damon_filter *filter; + + filter = damon_new_filter(sys_filter->type, + sys_filter->matching, + sys_filter->allow); + if (!filter) return -ENOMEM; - damon_add_probe(ctx, c); - - for (j = 0; j < sys_filters->nr; j++) { - struct damon_sysfs_filter *sys_filter = - sys_filters->filters_arr[j]; - struct damon_filter *filter; - - filter = damon_new_filter(sys_filter->type, - sys_filter->matching, - sys_filter->allow); - if (!filter) - return -ENOMEM; - if (filter->type == DAMON_FILTER_TYPE_MEMCG) { - int err; - - err = damon_sysfs_memcg_path_to_id( - sys_filter->path, - &filter->memcg_id); - if (err) { - damon_destroy_filter(filter); - return err; - } + if (filter->type == DAMON_FILTER_TYPE_MEMCG) { + int err; + + err = damon_sysfs_memcg_path_to_id( + sys_filter->path, + &filter->memcg_id); + if (err) { + damon_destroy_filter(filter); + return err; } - damon_add_filter(c, filter); } + damon_add_filter(probe, filter); + } + return 0; +} + +static int damon_sysfs_set_probes(struct damon_ctx *ctx, + struct damon_sysfs_probes *sys_probes) +{ + int i, err; + + for (i = 0; i < sys_probes->nr; i++) { + struct damon_sysfs_probe *sys_probe; + struct damon_probe *p; + + p = damon_new_probe(); + if (!p) + return -ENOMEM; + damon_add_probe(ctx, p); + sys_probe = sys_probes->probes_arr[i]; + err = damon_sysfs_set_probe(p, sys_probe); + if (err) + return err; } return 0; } -- 2.47.3