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 B9D9B49F127; Wed, 2 Sep 2026 14:03:38 +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=1788357820; cv=none; b=XHVCR56oI1crrORhWt+vwSWYNjyyLqOMloJ6u4eSL8u0hqHUKG+h0uurRTRIpoa1cWrhchzRClEbj8kDuWlEigwcfD++y8WmswY6uXWh9KVZpCb5O1w1aMS3QW43f0hwfTeWHHL3IJu+k4YormnKV6vDbVPhW7x2L15cnn4HUu0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788357820; c=relaxed/simple; bh=mhg5spd/dAFzjI717T5/J5tKnG9ErLfa6LKK+y41F6I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UWHFYiStmFqFgW2bJtiGY2tMEYJJII+TZdnSKaht0M6rXpt0X1tekgAck3ybF4bGdMea9Hdt1IUO9OvLs3Dq6jE+99VJDIUvujmpGKzPguR66Sq3UpGDc0flyGgQOWOn1r4zeUNHL8tXZSunv4XKCPteu+EYxUi1gWmTvhYHvn8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A8GMKvau; 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="A8GMKvau" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E0D01F00A3A; Wed, 2 Sep 2026 14:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788357818; bh=w+y2YGAE9dCS66KlFXJ1CfqA9PNhGVCbFRiU+z6GWB8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=A8GMKvaur5A0pGiCYcRq25dH9g8ieYXqvdJV7+FJTx227q0RwkObIse7UVbq8E52B wsGio2tAGIeJImnBWe930VkihgttsxasQNoolrwco2tMmdTjC946GflB60YrJOBCJE 6PujGNQOkx18GuRX46w9/DdLvFPHwh/AOBM9S1fqD2bJfbICQwJwS58HQ9+Vm4skFW GS+tgCIKssbWirh9QIi/61bIyMrMqCH19z/v7kZTLxTEVEuUjETXoe7HmqtC4JfrEZ a3047oU+oe3oOmxG702GvYLytWS6KCzGCXD2jhOJmpSjWm/j+iXBXDAyXsrZLvlaxZ c9e5sWL6PEXIw== From: SJ Park To: Andrew Morton Cc: SJ Park , Brendan Higgins , David Gow , damon@lists.linux.dev, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 2/6] mm/damon/tests/core-kunit: add damon_commit_probes() test Date: Wed, 2 Sep 2026 07:03:08 -0700 Message-ID: <20260902140313.85983-3-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260902140313.85983-1-sj@kernel.org> References: <20260902140313.85983-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add kunit test to ensure damon_commit_probes() updates destination DAMON context with source probes as expected. Signed-off-by: SJ Park --- mm/damon/tests/core-kunit.h | 84 +++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/mm/damon/tests/core-kunit.h b/mm/damon/tests/core-kunit.h index c2ddef3c76d35..c01e6a75cadc1 100644 --- a/mm/damon/tests/core-kunit.h +++ b/mm/damon/tests/core-kunit.h @@ -1403,6 +1403,89 @@ static void damon_test_commit_filter(struct kunit *test) }); } +static struct damon_ctx *damon_test_help_setup_probes(unsigned int weights[], + int nr_weights) +{ + struct damon_ctx *ctx; + struct damon_probe *probe; + int i; + + ctx = damon_new_ctx(); + if (!ctx) + return NULL; + for (i = 0; i < nr_weights; i++) { + probe = damon_new_probe(); + if (!probe) { + damon_destroy_ctx(ctx); + return NULL; + } + probe->weight = weights[i]; + damon_add_probe(ctx, probe); + } + return ctx; +} + +static void damon_test_commit_probes_for(struct kunit *test, + unsigned int dst_weights[], int nr_dst_probes, + unsigned int src_weights[], int nr_src_probes) +{ + struct damon_ctx *dst, *src; + int err; + struct damon_probe *dst_probe, *src_probe; + + dst = damon_test_help_setup_probes(dst_weights, nr_dst_probes); + if (!dst) + kunit_skip(test, "dst alloc fail"); + src = damon_test_help_setup_probes(src_weights, nr_src_probes); + if (!src) { + damon_destroy_ctx(dst); + kunit_skip(test, "src alloc fail"); + } + + err = damon_commit_probes(dst, src); + KUNIT_EXPECT_EQ(test, err, 0); + if (err) + goto out; + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) + nr_dst_probes++; + nr_src_probes = 0; + damon_for_each_probe(src_probe, src) + nr_src_probes++; + KUNIT_EXPECT_EQ(test, nr_dst_probes, nr_src_probes); + if (nr_dst_probes != nr_src_probes) + goto out; + nr_dst_probes = 0; + damon_for_each_probe(dst_probe, dst) { + src_probe = damon_nth_probe(nr_dst_probes, src); + KUNIT_EXPECT_EQ(test, src_probe->weight, dst_probe->weight); + nr_dst_probes++; + } +out: + damon_destroy_ctx(dst); + damon_destroy_ctx(src); +} + +static void damon_test_commit_probes(struct kunit *test) +{ + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){}, 0, (unsigned int[]){1, 2}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){1}, 1, (unsigned int[]){2, 3}, 2); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){1}, 1); + damon_test_commit_probes_for(test, + (unsigned int[]){2, 3}, 2, (unsigned int[]){}, 0); + damon_test_commit_probes_for(test, + (unsigned int[]){2}, 1, (unsigned int[]){}, 0); +} + static void damon_test_commit_ctx(struct kunit *test) { struct damon_ctx *src, *dst; @@ -1811,6 +1894,7 @@ static struct kunit_case damon_test_cases[] = { KUNIT_CASE(damos_test_commit_migrate_hot), KUNIT_CASE(damon_test_commit_target_regions), KUNIT_CASE(damon_test_commit_filter), + KUNIT_CASE(damon_test_commit_probes), KUNIT_CASE(damon_test_commit_ctx), KUNIT_CASE(damon_test_valid_probe_params), KUNIT_CASE(damos_test_filter_out), -- 2.47.3