From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by sourceware.org (Postfix) with ESMTPS id 7FB79385C017 for ; Thu, 19 Mar 2020 10:41:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 7FB79385C017 Received: by mail-wr1-x431.google.com with SMTP id o12so1668517wrh.11 for ; Thu, 19 Mar 2020 03:41:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=m/YfaMvC2ibQfbbcY1EsAWyGvt9hUa117anxlTTAA2o=; b=bfRmADnGGDdqypywBWDySYQgmZz3kYlPLJmJIz4JbcNhj/0HYNCyUFqCa+KWSIfkRl d5KsEMNSTOoM9ySAMz8RQUJawdxL4k2dcfJswKb4t6KCWPvVKJpO6SOt12b/Feden1PH sNHzjy49cufzBfe6H/h/CCisWgiKoUmPyXUrUfaqzp96uYkldcoF97sKGZHYW9THn+oK ejXqxOZoExIBTQEa+AFMnY7M2qfT+RHre/Eg1+rJ8kWXIZ92jwHaUWw7bfnEv8iMFFTw s/I/ZZ24TFFQOL9Hv4lqkqyfjtN2M5pIwdh8CUVQ27V7LAWIkW5BhKJ6G8swQ5mizwdc 2D5g== X-Gm-Message-State: ANhLgQ2/M+FuuGkkzp4z/StRmMfOm9kaGBtnHU7wJoQ8N6G1UGjKegA/ 1P0nprmD8cN4KZhiklpeCRQpE2zO X-Google-Smtp-Source: ADFU+vtzvPJklZd71TANOQHjN4J5hldun0ljV+urthq8sOUffHctixNRG4D+kcdvpf62YkQ0HHxsrw== X-Received: by 2002:a5d:55cf:: with SMTP id i15mr3373486wrw.321.1584614462157; Thu, 19 Mar 2020 03:41:02 -0700 (PDT) Received: from ?IPv6:2003:ee:6715:5401:8927:cf1a:de7:515b? (p200300EE671554018927CF1A0DE7515B.dip0.t-ipconnect.de. [2003:ee:6715:5401:8927:cf1a:de7:515b]) by smtp.gmail.com with ESMTPSA id c85sm2583076wmd.48.2020.03.19.03.41.01 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Mar 2020 03:41:01 -0700 (PDT) Subject: Re: Why is taskset still not in util-linux? To: cygwin@cygwin.com References: <1348011a-261a-2a87-d361-4e51fa8dc19f@cs.umass.edu> <85ae12aa-6cc3-5d4c-5df2-25bf811ec6a9@maxrnd.com> <72fea68a-b3d7-e87c-726f-8a5a2587a992@maxrnd.com> <01e3d337-e5fe-f393-7634-3f1881bca315@cs.umass.edu> From: Marco Atzeri Message-ID: Date: Thu, 19 Mar 2020 11:41:00 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <01e3d337-e5fe-f393-7634-3f1881bca315@cs.umass.edu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Mar 2020 10:41:05 -0000 Am 19.03.2020 um 11:14 schrieb Eliot Moss: > On 3/16/2020 7:34 PM, Mark Geisert wrote: > > Mark Geisert wrote: > >> Eliot Moss wrote: > >>> > >>> Dear cygwin-ers -- > >>> > >>> Something I had asked about a while ago was the absence os taskset > in cygwin's > >>> util-linux.  At the time, it was pointed out that the necessary > get/set > >>> affinity library/system calls were not yet supported.  These were > added a > >>> while ago, so it would seem that taskset ought to work.  In fact, I > think > >>> someone got it going on their own.  Can we add it to util-linux now, > >>> officially?  I think this was intended but perhaps was overlooked or > >>> something. > >> > >> Report noted; thanks.  A solution is being worked. > > > > There's been no forward progress on this.  If you're comfortable > getting the util-linux source > > package through Cygwin setup*.exe, you can follow the steps shown in > > https://cygwin.com/pipermail/cygwin-apps/2020-March/039855.html to > build (with cygport) a local copy > > of util-linux that includes a taskset.exe you can move into > /usr/local/bin, for example. > > > > You might try that route if you're up for it.  Feel free to ask > questions here if you hit a snag. > > HTH, > > Thank you, Mark.  I decided to give it a try and got some distance, but > hit a snag. > > First, I had to change configure.ac to add control to disable ionice > (Cygwin > does not support a required syscall) while still trying to build taskset. > Previously taskset and ionice (and one other program) were controlled by > the > single --enable-schedutils. > > Now, including sched.h does not provide the prototypes for > sched_getaffinity, > etc.  I found a previous post that suggests we need to do -D_GNU_SOURCE > for it > to work.  I am not sure of the best place to stick that, but I will see > about > maybe a one line patch to taskset.c or something. > > Regards - Eliot one brutal solution I recently used cygconf echo "defining _GNU_SOURCE on config.h" echo "#define _GNU_SOURCE 1" >> config.h cygmake the patch approach is usually restricted to a portion of the code or a general header. May be there is already something like that in the code, or you can add a similar stuff #if defined(__linux__) || defined(__CYGWIN__) # ifndef _GNU_SOURCE # define _GNU_SOURCE # endif