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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DE84C4338F for ; Wed, 4 Aug 2021 02:02:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E749460E78 for ; Wed, 4 Aug 2021 02:02:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234199AbhHDCCM (ORCPT ); Tue, 3 Aug 2021 22:02:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234024AbhHDCCJ (ORCPT ); Tue, 3 Aug 2021 22:02:09 -0400 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1E16C061764 for ; Tue, 3 Aug 2021 19:01:57 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id ec13so1579040edb.0 for ; Tue, 03 Aug 2021 19:01:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=8OQYuCzODGsyt/DqKxZOBjYjUO0WZANTojPvfkOL4rQ=; b=je0WvXR42DZrGfIyJqkwj9wuQGH2H9H70uJNtg7JBiUYNAVDbdO7Fkkpl5Bf4Sfbq/ rqhwGp5yhtZugm73fIOtkQj3oagsGwMgIUWZ/CTLdTqe3rSFLtjjJTIC+mtLwx04hH5w D2AYpAmYMSjWror3Se8f4gKV0iyUliUoinpIbWnLH/d6yaM+ECKkbtR+/dIGieu+6pYc ULiPGwRV6wcvOy7XGeVx6ZOXEHXvd8S1nazEkVg6tXsgDtCKl5tGh1LoNDWezCYOlwBU M0wzL06fhCAW7A5g90U6/NhiUlil/qYxmxjXhz5iXTB3LW3D4uMJjoWHJdYy9Q+YtR0J 7plw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=8OQYuCzODGsyt/DqKxZOBjYjUO0WZANTojPvfkOL4rQ=; b=oxAKCziT1nr37PB+UpViwEv/M+U0jPl3pVcFoHDnjYhE3BYJrQi88C8KJi+/EnQLah I5PuRCCMF/lm6+BBLM0e+xHq2MVti8NlTVTpIR4YloCuNg4YdAtER3KZvkLhEVReL9fE tqvIoeQ8+xq+LSTKsPEJvRNMcXKcMmTeY6tAOvbwkm0VDCqkaE4vwRlTQ5DnwZcHM7DF s4nKESjCtXgVjBq95PG8UDhk0kpvxedazdMIDX/0lOuAlNNfH1ZhA1yeVed1s8wF1X2x Ter+R9RjbQFHGopegU36jf1S4rYOS+hU1EXPou7PB1FIZgCWk1z4OGMokWct8GufphjQ wN2Q== X-Gm-Message-State: AOAM532e1C+JoDtI4Nc8TH9hscZhWDfGV+d2hvaRzCemoTx7Y/8gYxmn R3ZIcUZJ/FnF5pxwGqsl84DA0ViDVPghkFTHkD0OzQ== X-Google-Smtp-Source: ABdhPJxZbFpJ1tgAX1jlPGs7e04DxLljSzNXhdshECMp6vCfXJMH2Xvw8/B44B1iux6PUbwTalxzZCK+EkFn8C6HSUQ= X-Received: by 2002:aa7:cd9a:: with SMTP id x26mr28987239edv.26.1628042516316; Tue, 03 Aug 2021 19:01:56 -0700 (PDT) MIME-Version: 1.0 References: <071c17b5b04ebb0dfeba137acc495e5dd9d2a719.1626252248.git.zhansayabagdaulet@gmail.com> In-Reply-To: <071c17b5b04ebb0dfeba137acc495e5dd9d2a719.1626252248.git.zhansayabagdaulet@gmail.com> From: Pavel Tatashin Date: Tue, 3 Aug 2021 22:01:20 -0400 Message-ID: Subject: Re: [PATCH v2 4/4] selftests: vm: add KSM merging across nodes test To: Zhansaya Bagdauletkyzy Cc: shuah@kernel.org, Andrew Morton , LKML , linux-kselftest@vger.kernel.org, linux-mm , Tyler Hicks Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 14, 2021 at 4:56 AM Zhansaya Bagdauletkyzy wrote: > > Add check_ksm_numa_merge() function to test that pages in different NUMA > nodes are being handled properly. First, two duplicate pages are allocated > in two separate NUMA nodes using the libnuma library. Since there is one > unique page in each node, with merge_across_nodes = 0, there won't be any > shared pages. If merge_across_nodes is set to 1, the pages will be > treated as usual duplicate pages and will be merged. If NUMA config is > not enabled or the number of NUMA nodes is less than two, then the test > is skipped. The test is run as follows: ./ksm_tests -N > > Signed-off-by: Zhansaya Bagdauletkyzy Reviewed-by: Pavel Tatashin 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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B901C4338F for ; Wed, 4 Aug 2021 02:01:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9380060F58 for ; Wed, 4 Aug 2021 02:01:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9380060F58 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=soleen.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 378C18D0019; Tue, 3 Aug 2021 22:01:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 328CD8D000F; Tue, 3 Aug 2021 22:01:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 23EA78D0019; Tue, 3 Aug 2021 22:01:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0047.hostedemail.com [216.40.44.47]) by kanga.kvack.org (Postfix) with ESMTP id 101138D000F for ; Tue, 3 Aug 2021 22:01:58 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id AE13D181D341E for ; Wed, 4 Aug 2021 02:01:57 +0000 (UTC) X-FDA: 78435747474.01.288BC07 Received: from mail-ed1-f50.google.com (mail-ed1-f50.google.com [209.85.208.50]) by imf12.hostedemail.com (Postfix) with ESMTP id 60F3E1004ECB for ; Wed, 4 Aug 2021 02:01:57 +0000 (UTC) Received: by mail-ed1-f50.google.com with SMTP id x90so1493503ede.8 for ; Tue, 03 Aug 2021 19:01:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=8OQYuCzODGsyt/DqKxZOBjYjUO0WZANTojPvfkOL4rQ=; b=je0WvXR42DZrGfIyJqkwj9wuQGH2H9H70uJNtg7JBiUYNAVDbdO7Fkkpl5Bf4Sfbq/ rqhwGp5yhtZugm73fIOtkQj3oagsGwMgIUWZ/CTLdTqe3rSFLtjjJTIC+mtLwx04hH5w D2AYpAmYMSjWror3Se8f4gKV0iyUliUoinpIbWnLH/d6yaM+ECKkbtR+/dIGieu+6pYc ULiPGwRV6wcvOy7XGeVx6ZOXEHXvd8S1nazEkVg6tXsgDtCKl5tGh1LoNDWezCYOlwBU M0wzL06fhCAW7A5g90U6/NhiUlil/qYxmxjXhz5iXTB3LW3D4uMJjoWHJdYy9Q+YtR0J 7plw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=8OQYuCzODGsyt/DqKxZOBjYjUO0WZANTojPvfkOL4rQ=; b=OtnjKG6fX4QxQwX7W6nuw0LS/RTo7JPLhB0jB9PSV6UfWJ8Wbj9vv4xWn1n+uFzQ0p 1lUbqvnwppab8fQ0M18AjtOP5C0Ddmo7y0mvJ0/ucH8pSEUQT/ZdVOebrfo++DavlRVp XNZyj3p/XWUDLiGBeE7Tm+sGjSG1s4dMvyYpWr47XU0mjdXeEqn8BrK7yjbr0fmnVB3D edxtuw8HNpbJcgBBYBiV1jFwlb3mhmJ+0Sl2arlMIS5546wKAajqZLn+HN2ppJf17o0C FXemq6HnNI0JfIWIiAxIePbZsBmcNB0T6/I2N7d0+/0bMt9y7zlacQWwa4fbOYxjY1n9 /QIQ== X-Gm-Message-State: AOAM532er0s1M9QRdKzCQQLzhyIEYIxPHP87kdGzUTN0nBoDE//NAJXg nIDxnWfwEQOMiwWCFRz19KIj+B8nF1tNZj2+Kwar4A== X-Google-Smtp-Source: ABdhPJxZbFpJ1tgAX1jlPGs7e04DxLljSzNXhdshECMp6vCfXJMH2Xvw8/B44B1iux6PUbwTalxzZCK+EkFn8C6HSUQ= X-Received: by 2002:aa7:cd9a:: with SMTP id x26mr28987239edv.26.1628042516316; Tue, 03 Aug 2021 19:01:56 -0700 (PDT) MIME-Version: 1.0 References: <071c17b5b04ebb0dfeba137acc495e5dd9d2a719.1626252248.git.zhansayabagdaulet@gmail.com> In-Reply-To: <071c17b5b04ebb0dfeba137acc495e5dd9d2a719.1626252248.git.zhansayabagdaulet@gmail.com> From: Pavel Tatashin Date: Tue, 3 Aug 2021 22:01:20 -0400 Message-ID: Subject: Re: [PATCH v2 4/4] selftests: vm: add KSM merging across nodes test To: Zhansaya Bagdauletkyzy Cc: shuah@kernel.org, Andrew Morton , LKML , linux-kselftest@vger.kernel.org, linux-mm , Tyler Hicks Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=soleen.com header.s=google header.b=je0WvXR4; spf=pass (imf12.hostedemail.com: domain of pasha.tatashin@soleen.com designates 209.85.208.50 as permitted sender) smtp.mailfrom=pasha.tatashin@soleen.com; dmarc=none X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 60F3E1004ECB X-Stat-Signature: wm1b9qe7nmmpzjs8xhkudsb6t6ozhmn9 X-HE-Tag: 1628042517-27447 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: On Wed, Jul 14, 2021 at 4:56 AM Zhansaya Bagdauletkyzy wrote: > > Add check_ksm_numa_merge() function to test that pages in different NUMA > nodes are being handled properly. First, two duplicate pages are allocated > in two separate NUMA nodes using the libnuma library. Since there is one > unique page in each node, with merge_across_nodes = 0, there won't be any > shared pages. If merge_across_nodes is set to 1, the pages will be > treated as usual duplicate pages and will be merged. If NUMA config is > not enabled or the number of NUMA nodes is less than two, then the test > is skipped. The test is run as follows: ./ksm_tests -N > > Signed-off-by: Zhansaya Bagdauletkyzy Reviewed-by: Pavel Tatashin