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Mon, 7 Dec 2020 00:49:03 +0000 (UTC) IronPort-SDR: oZiNOni1goKLAq/QX3+118YRXA5Ym8TnVS1Wf4SocMx5vQ4SwUMFA3pI1fN5vwDUdGYjo6gep0 NLhRVb9fRIKw== X-IronPort-AV: E=McAfee;i="6000,8403,9827"; a="173776866" X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="173776866" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Dec 2020 16:49:01 -0800 IronPort-SDR: wudM+445YgVBNXcynP9r8T3fkm/l7Ss98AgAcC3hOGTyxHg2S5T5y9j0L3LSLoDhhTjWWzNfrB fOjZrL3gg0ig== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,398,1599548400"; d="scan'208";a="316887170" Received: from yhuang-dev.sh.intel.com (HELO yhuang-dev) ([10.239.159.50]) by fmsmga008.fm.intel.com with ESMTP; 06 Dec 2020 16:48:58 -0800 From: "Huang\, Ying" To: "Alejandro Colomar \(man-pages\)" Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Matthew Wilcox \(Oracle\)" , Rafael Aquini , Andrew Morton , Ingo Molnar , Rik van Riel , Peter Zijlstra , Johannes Weiner , Dave Hansen , Andi Kleen , Michal Hocko , David Rientjes , linux-api@vger.kernel.org, Mel Gorman Subject: Re: [PATCH -V7 2/3] NOT kernel/man2/set_mempolicy.2: Add mode flag MPOL_F_NUMA_BALANCING References: <20201204091534.72239-1-ying.huang@intel.com> <20201204091534.72239-3-ying.huang@intel.com> <4c10125a-cbe6-7dff-3b57-c3480e913c5f@gmail.com> Date: Mon, 07 Dec 2020 08:48:57 +0800 In-Reply-To: <4c10125a-cbe6-7dff-3b57-c3480e913c5f@gmail.com> (Alejandro Colomar's message of "Fri, 4 Dec 2020 14:25:20 +0100") Message-ID: <87v9demoee.fsf@yhuang-dev.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=ascii 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, Alex, "Alejandro Colomar (man-pages)" writes: > Hi Huang Ying, > > Please, see a few fixes below. > > Thanks, > > Alex > > On 12/4/20 10:15 AM, Huang Ying wrote: >> Signed-off-by: "Huang, Ying" >> --- >> man2/set_mempolicy.2 | 14 ++++++++++++++ >> 1 file changed, 14 insertions(+) >> >> diff --git a/man2/set_mempolicy.2 b/man2/set_mempolicy.2 >> index 68011eecb..fb2e6fd96 100644 >> --- a/man2/set_mempolicy.2 >> +++ b/man2/set_mempolicy.2 >> @@ -113,6 +113,15 @@ A nonempty >> .I nodemask >> specifies node IDs that are relative to the set of >> node IDs allowed by the process's current cpuset. >> +.TP >> +.BR MPOL_F_NUMA_BALANCING " (since Linux 5.11)" >> +When >> +.I mode >> +is MPOL_BIND, enable the Linux kernel NUMA balancing for the task if > > .B MPOL_BIND > >> +it is supported by kernel. >> +If the flag isn't supported by Linux kernel, or is used with >> +.I mode> +other than MPOL_BIND, return -1 and errno is set to EINVAL. > > .BR MPOL_BIND , > > A minus sign should be escaped: > \-1 > See man-pages(7)::STYLE GUIDE::Generating optimal glyphs) > > .I errno > .BR EINVAL . > >> .PP >> .I nodemask >> points to a bit mask of node IDs that contains up to >> @@ -293,6 +302,11 @@ argument specified both >> .B MPOL_F_STATIC_NODES >> and >> .BR MPOL_F_RELATIVE_NODES . >> +Or, the >> +.B MPOL_F_NUMA_BALANCING >> +isn't supported by the Linux kernel, or is used with >> +.I mode >> +other than MPOL_BIND. > > .BR MPOL_BIND . > >> .TP >> .B ENOMEM >> Insufficient kernel memory was available. >> Thanks a lot for your comments! Will change them in the next version. Best Regards, Huang, Ying