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Tue, 14 Jan 2025 15:25:20 -0800 (PST) Received: from [192.168.1.14] ([38.175.170.29]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-5f882756dd0sm4643531eaf.32.2025.01.14.15.25.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Jan 2025 15:25:20 -0800 (PST) Message-ID: Date: Tue, 14 Jan 2025 16:25:19 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 0/2] selftests/resctrl: SNC kernel support discovery To: Reinette Chatre , Maciej Wieczor-Retman , fenghua.yu@intel.com, shuah@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, ilpo.jarvinen@linux.intel.com, tony.luck@intel.com, Shuah Khan References: <808036fb-9a2c-44c3-ac6c-5406313a232a@intel.com> <9223d698-d16a-43c8-95c1-9839b81c2c23@intel.com> Content-Language: en-US From: Shuah Khan In-Reply-To: <9223d698-d16a-43c8-95c1-9839b81c2c23@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 1/14/25 15:30, Reinette Chatre wrote: > Hi Shuah, > > On 12/19/24 10:35 AM, Reinette Chatre wrote: >> Hi Shuah, >> >> On 12/16/24 7:18 AM, Maciej Wieczor-Retman wrote: >>> >>> Sub-Numa Clustering (SNC) allows splitting CPU cores, caches and memory >>> into multiple NUMA nodes. When enabled, NUMA-aware applications can >>> achieve better performance on bigger server platforms. >>> >>> SNC support was merged into the kernel [1]. With SNC enabled >>> and kernel support in place all the tests will function normally (aside >>> from effective cache size). There might be a problem when SNC is enabled >>> but the system is still using an older kernel version without SNC >>> support. Currently the only message displayed in that situation is a >>> guess that SNC might be enabled and is causing issues. That message also >>> is displayed whenever the test fails on an Intel platform. >>> >>> Add a mechanism to discover kernel support for SNC which will add more >>> meaning and certainty to the error message. >>> >>> Add runtime SNC mode detection and verify how reliable that information >>> is. >>> >>> Series was tested on Ice Lake server platforms with SNC disabled, SNC-2 >>> and SNC-4. The tests were also ran with and without kernel support for >>> SNC. >>> >>> Series applies cleanly on kselftest/next. >>> >> >> Could you please consider this series for inclusion? >> >> Thank you very much. >> >> Reinette >> > > (bumping visibility of request made close to holidays) > > This series still applies cleanly to kselftest/next. Could you please > consider it for inclusion? > > Thank you very much. > > Reinette > Thank you for bumping it up to top of my Inbox. I will apply these for 6.14-rc1 now. thanks, -- Shuah