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Tue, 6 Sep 2022 12:59:06 +0000 (UTC) X-FDA: 79881665892.11.A9DD1E9 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf12.hostedemail.com (Postfix) with ESMTP id DA2FF4008F for ; Tue, 6 Sep 2022 12:59:04 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 479F56147A; Tue, 6 Sep 2022 12:59:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18B4CC433C1; Tue, 6 Sep 2022 12:59:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662469143; bh=GmhdK9e8DUrMiq+p5EOCSuvFoD+OxlZWjtWgIq0h88Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=QjjI0op7es9gnrMilp1DkDku6DkJErFF3FXWlA14ZRGgdqM4NJOp+3gZ2EQ3PyXsA jaqgNRApsHwPMSKJtKwKBqSv9rmVIZURyN6eYLEzPsU5OzAWYefkJVXhpdBxyiKhoi SN/kE6j+Odsmkhg3YVASTh3IK5fW1znLqfijo3HjMsZuZC3Z+156cqZNzWeCRyqLLZ DL4Mj3RqrBshpJQPdWClw0EMUNRVCYmBz6qVe2ag2MvHA5rOITqcWHR4xtatMrfu5b Ks33eyD/OtOjqU3eidUQ6MOMrtcvfq46JPpyvyHMN4r1Fx+NOV8RUf2h6axUonBEEP K1mZglUtQIYtA== Date: Tue, 6 Sep 2022 15:58:47 +0300 From: Mike Rapoport To: Song Chen Cc: karolinadrobnik@gmail.com, david@redhat.com, remckee0@gmail.com, shaoqin.huang@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] tools/testing/memblock: add double array test Message-ID: References: <1662102645-8272-1-git-send-email-chensong_2000@189.cn> MIME-Version: 1.0 Content-Type: text/plain; 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bh=T9gTmGo1Qo8hxE2mFZjbp8d9kX0kswHpER2Hjit5kls=; b=TgBUndrlZ1VO7w7mrjbvNWus19VJKDXeS0vmR5JNIL50fqjgnGZrwECOy3bjEZVZCDtrIW xX25nXOLR5BWQA9a0RGMzetYDX/S+ITWviZscJAyLWfaxVpK9inQtupEls4cSdbuqJq+rW LbCy86eZWN+kODp8tofLlN6CpmwHw5M= X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 4krdqt7xyrxqb7crexsdf544pdzu6e4g Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=QjjI0op7; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf12.hostedemail.com: domain of rppt@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=rppt@kernel.org X-Rspamd-Queue-Id: DA2FF4008F X-HE-Tag: 1662469144-83589 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Song, On Fri, Sep 02, 2022 at 03:10:45PM +0800, Song Chen wrote: > By default, there are 128 memblock_regions in memblock.memory.regions. > This test is trying to add the 129th region by calling memblock_add, > expects to trigger memblock_double_array. > > The test will pass if > memblock.memory.cnt == 129 and > memblock.memory.max == 256 > > Below is the output: > > ./main -v > Running memblock_double_array tests... > memblock_add: [0x7fffdccdf0a0a-0x7fffdccdf080a] 0x5616cca50dc4S > ..... > memblock_add: [0x7fffdccdf0a0a-0x7fffdccdf080a] 0x5616cca50de4S > memblock: memory is doubled to 256 at [0x7fffdccdeeb0a-0x7fffdccdeed0a] > ok 25 : memblock_double_array: passed Your patch largely duplicates work by Shaoqin: https://lore.kernel.org/all/20220902024007.58041-1-shaoqin.huang@intel.com > Signed-off-by: Song Chen > --- > tools/testing/memblock/tests/basic_api.c | 42 ++++++++++++++++++++++++ > tools/testing/memblock/tests/common.c | 5 --- > tools/testing/memblock/tests/common.h | 4 +++ > 3 files changed, 46 insertions(+), 5 deletions(-) > > diff --git a/tools/testing/memblock/tests/basic_api.c b/tools/testing/memblock/tests/basic_api.c > index 66f46f261e66..e668ceff2f10 100644 > --- a/tools/testing/memblock/tests/basic_api.c > +++ b/tools/testing/memblock/tests/basic_api.c > @@ -8,6 +8,7 @@ > #define FUNC_RESERVE "memblock_reserve" > #define FUNC_REMOVE "memblock_remove" > #define FUNC_FREE "memblock_free" > +#define FUNC_DOUBLE_ARRAY "memblock_double_array" > > static int memblock_initialization_check(void) > { > @@ -1180,6 +1181,46 @@ static int memblock_free_checks(void) > return 0; > } > > +/* > + * A simple test that adds to 129 memory blocks. > + * Expect the region max doubled. > + */ > +static int memblock_double_array_check(void) > +{ > + int i; > + struct memblock_region *regions = memblock.memory.regions; > + struct region r = { > + .base = 0, > + .size = SZ_512, > + }; > + > + prefix_reset(); > + prefix_push(FUNC_DOUBLE_ARRAY); > + test_print("Running %s tests...\n", FUNC_DOUBLE_ARRAY); > + > + dummy_physical_memory_init(); > + reset_memblock_attributes(); > + setup_memblock(); > + memblock_allow_resize(); > + > + for (i = 0; i < INIT_MEMBLOCK_REGIONS; i++) { > + r.base += SZ_1K; > + memblock_add(r.base, r.size); > + } > + > + ASSERT_EQ(memblock.memory.cnt, INIT_MEMBLOCK_REGIONS + 1); > + ASSERT_EQ(memblock.memory.max, INIT_MEMBLOCK_REGIONS * 2); > + > + memblock.memory.regions = regions; > + memblock.memory.cnt = INIT_MEMBLOCK_REGIONS; > + dummy_physical_memory_cleanup(); > + > + test_pass_pop(); > + > + return 0; > +} > + > + > int memblock_basic_checks(void) > { > memblock_initialization_check(); > @@ -1187,6 +1228,7 @@ int memblock_basic_checks(void) > memblock_reserve_checks(); > memblock_remove_checks(); > memblock_free_checks(); > + memblock_double_array_check(); > > return 0; > } > diff --git a/tools/testing/memblock/tests/common.c b/tools/testing/memblock/tests/common.c > index e43b2676af81..1d295a71ad44 100644 > --- a/tools/testing/memblock/tests/common.c > +++ b/tools/testing/memblock/tests/common.c > @@ -5,11 +5,6 @@ > #include > #include > > -#define INIT_MEMBLOCK_REGIONS 128 > -#define INIT_MEMBLOCK_RESERVED_REGIONS INIT_MEMBLOCK_REGIONS > -#define PREFIXES_MAX 15 > -#define DELIM ": " > - > static struct test_memory memory_block; > static const char __maybe_unused *prefixes[PREFIXES_MAX]; > static int __maybe_unused nr_prefixes; > diff --git a/tools/testing/memblock/tests/common.h b/tools/testing/memblock/tests/common.h > index 3e7f23d341d7..13559825ddca 100644 > --- a/tools/testing/memblock/tests/common.h > +++ b/tools/testing/memblock/tests/common.h > @@ -11,6 +11,10 @@ > #include <../selftests/kselftest.h> > > #define MEM_SIZE SZ_16K > +#define INIT_MEMBLOCK_REGIONS 128 > +#define INIT_MEMBLOCK_RESERVED_REGIONS INIT_MEMBLOCK_REGIONS > +#define PREFIXES_MAX 15 > +#define DELIM ": " > > /** > * ASSERT_EQ(): > -- > 2.25.1 > > -- Sincerely yours, Mike.