From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oo1-xc29.google.com (mail-oo1-xc29.google.com [IPv6:2607:f8b0:4864:20::c29]) by sourceware.org (Postfix) with ESMTPS id DA2BF3858413 for ; Mon, 7 Feb 2022 12:07:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org DA2BF3858413 Received: by mail-oo1-xc29.google.com with SMTP id o192-20020a4a2cc9000000b00300af40d795so13356919ooo.13 for ; Mon, 07 Feb 2022 04:07:47 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=vXBUEzI7yGNSQQemAZP2jZHAPTehriAVDpkr96pBq44=; b=VXch1m91aBkOVezozma16IkFpbai+iEFr3S7gSCxjeiSRwFu2cAOS4HJ9pD15o4mnU GEciaF+96zX3PvCAJ3GpfN2he9UmtKJOsLLdSrPla32mx92X7qc9qZhE4tf1Y3AvZK0X fMDKy0pNb/6JJTtv1ny+cxgUAeFs0PaVYuFTbtIFjaoIvueXFNHAW/B19XEqiit97VGE +xEyVWHiiadSMQvIN2k3vV/N9RFum41V8EsSOWdQJDJt+fJVPpRz1poe0sDeGkrATmce qBkI+lalO2BtwArJjDSgIBZ4R0mKrBvFhL27BF+X/ZAjM/kFNYm04ELXTeCnoCjf9JDE 7nVg== X-Gm-Message-State: AOAM530fdipizcA5EzdSggGXT+e2lw8jAh/kjvMRz65Z2nnBRCV/wmtw 5BBTmJDWBdp+ByW5XEef5q0WbfMmz9A8Wg== X-Google-Smtp-Source: ABdhPJzwwC/jxESFMbuqxkdz7Llg5hiZU9twIMgR26f9FxJxSO0VB/Qe9nXf3waQS9xf/s6F5fp1jw== X-Received: by 2002:a05:6870:6186:: with SMTP id a6mr981247oah.153.1644235667263; Mon, 07 Feb 2022 04:07:47 -0800 (PST) Received: from ?IPV6:2804:431:c7ca:733:4cdc:e08a:54c6:5108? ([2804:431:c7ca:733:4cdc:e08a:54c6:5108]) by smtp.gmail.com with ESMTPSA id g10sm3813321otn.65.2022.02.07.04.07.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 07 Feb 2022 04:07:47 -0800 (PST) Message-ID: <9f8357d6-e64b-63d9-af5f-5a4fa8d0652d@linaro.org> Date: Mon, 7 Feb 2022 09:07:44 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.1 Subject: Re: [PATCH] linux: fix accuracy of get_nprocs and get_nprocs_conf [BZ #28865] Content-Language: en-US To: Florian Weimer Cc: Adhemerval Zanella via Libc-alpha , "Dmitry V. Levin" References: <20220205212402.GA5233@altlinux.org> <2f8633c5-6335-b7aa-e735-65dc36322d7f@linaro.org> <87a6f2c35m.fsf@oldenburg.str.redhat.com> <1456654f-b143-85ff-4e48-a4500e0c67a1@linaro.org> <871r0ec2cz.fsf@oldenburg.str.redhat.com> From: Adhemerval Zanella In-Reply-To: <871r0ec2cz.fsf@oldenburg.str.redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Feb 2022 12:07:49 -0000 On 07/02/2022 09:01, Florian Weimer wrote: > * Adhemerval Zanella: > >>> But I think using sched_getaffinity as a fallback when /sys and /proc >>> are not available makes somse. It's different form what we did >>> temporarily (sched_getaffinity first). >> >> My concern is we start to see BZ#27645 again on environments that filter >> out sysfs and provide a synthetic sched_getaffinity. > > Should we move the sched_getaffinity fallback after /proc, then? Yeah, that was what I suggested in another reply.