From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-173.mta1.migadu.com (out-173.mta1.migadu.com [95.215.58.173]) (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 80EDB3FBB50 for ; Tue, 7 Jul 2026 12:15:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783426502; cv=none; b=X+aAX+jXtPdSfB2n+qs/+huNeeh6FILxgF8SH8Z7l9289h3HQpclbMEPXqUPuHd1fjFVf6vKIVWkaY7cFogjyF5PirUder0teNODhpNMXxJqMq/eZReKcXxKgO15nDMsf29LrDwewKHHkBK2PlGWy/PP0jGWlv3B8qkx3oI9dKw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783426502; c=relaxed/simple; bh=3cjWbNIgBqzzm+7BOCwVMDV607Ssj02e8SUOegbBowI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RcrEl47blIkQ0NQbOmb4xj/a8blzAUR1wWRIUZIv27QvI2wBslsashUfbNJfxOBemz8Oi6uLZxJM67EGBOEW48wY+Kbfxngdi1AUwKh0+/GFO1ZzGWpa9tJXwrhHCxXZCeJpPG3Nbfvv83/EAr4+1TuNUc/8UgboMtneq/3mLuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=dnZX8NVS; arc=none smtp.client-ip=95.215.58.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="dnZX8NVS" Message-ID: <7d955bb1-9abd-4ba7-b1a6-a19f999cfa27@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1783426489; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YAAXy536t9SekqRYGrtDkUhq1/DKNIxZvKhhwo2mLyw=; b=dnZX8NVSJ1gWNjwt2iG1RLuceDp2+oztQwYUY4lB/jOrhLw3Yjhyh2vVwsGgLT3sFTLOhY z1RAbF46D9HGS9l4eayKo4Gzp9PWmOkCYppkyvGH3Wbbp2oJ0LpI4m90A1osALOFeDV2w+ SPZJl0PCl0Udo5g3ebVcfieXSV560vM= Date: Tue, 7 Jul 2026 20:14:30 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: cgroup/test_zswap failed with "zswpout does not increase after test program" To: =?UTF-8?Q?Michal_Koutn=C3=BD?= Cc: linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, hannes@cmpxchg.org, yosry@kernel.org, nphamcs@gmail.com, chengming.zhou@linux.dev, tj@kernel.org, Shuah Khan , mhocko@kernel.org, Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Li Wang References: Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zenghui Yu In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Hi Michal, On 7/7/26 8:01 PM, Michal Koutný wrote: > Hello Zenghui. > > On Tue, Jul 07, 2026 at 05:38:13PM +0800, Zenghui Yu wrote: > > Hi, > > > > Running cgroup/test_zswap on my arm64 box failed immediately with: > > > > [root@localhost cgroup]# ./test_zswap > > TAP version 13 > > 1..8 > > # zswpout does not increase after test program > > not ok 1 test_zswap_usage > > [...] > > What version of the tests do you run? > Namely, does it have the recent patches from Li [1]? I use today's mm-new [*] > > [1] 83476cc97bc63 ("Merge tag 'cgroup-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup") v7.2-rc1~136 ... so it should already be included. [*] https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/log/?h=mm-new Thanks, Zenghui