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([2001:a61:24d6:4e01:ef75:e978:47cd:1c50]) by smtp.gmail.com with ESMTPSA id b16sm4635569wrh.5.2019.09.24.13.08.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Sep 2019 13:08:29 -0700 (PDT) Cc: mtk.manpages@gmail.com Subject: Re: [PATCH] getauxval.3: Add new cache geometry entries To: "G. Branden Robinson" , linux-man@vger.kernel.org, benh@kernel.crashing.org, mpe@ellerman.id.au References: <20190916184136.13621-1-rzinsly@linux.vnet.ibm.com> <3a8ec98c-f93e-f186-b365-82857ec46395@gmail.com> <91faffae-777b-7e77-2986-463dc01508be@linux.vnet.ibm.com> <20190924184158.3f3au7aqnitasrrn@localhost.localdomain> From: "Michael Kerrisk (man-pages)" Message-ID: <945cbcbb-8459-4fdc-a161-ce6ecfee7248@gmail.com> Date: Tue, 24 Sep 2019 22:08:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190924184158.3f3au7aqnitasrrn@localhost.localdomain> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org On 9/24/19 8:41 PM, G. Branden Robinson wrote: > At 2019-09-23T10:36:16-0300, Raphael M Zinsly wrote: >>>> +Geometry of the L1 data cache, that is, line size and number >>>> +of ways. >>> >>> What is "number of ways"? >> >> It is the cache associativity, e.g.: 8 means the cache is 8-way set >> associative. > > Yup. At some point when I wasn't looking, the "-way" in "n-way cache" > got promoted from a partial adjective along the lines of "all cars must > halt at the four-way stop sign" to a full-blooded noun and term of art. > I bumped into it while proofreading a Ph.D. thesis[1]. > > To help familiarize practitioners with the new cloak of terminology > draped over this hoary descendant of Old English "weg", I suggest adding > a parenthetical: > > Geometry of the L1 data cache; that is, line size and number of ways > (e.g., \(lq4-way associative\(rq). Thanks jumping in Branden. I think Raphael's revised patch clarifies things in a similar way, so I'm happy. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/