From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC5F9C4338F for ; Wed, 4 Aug 2021 19:37:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9531460F58 for ; Wed, 4 Aug 2021 19:37:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237343AbhHDThy (ORCPT ); Wed, 4 Aug 2021 15:37:54 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:39535 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231195AbhHDThv (ORCPT ); Wed, 4 Aug 2021 15:37:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1628105858; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ksnx6CHFwn6pJOfE3ztxCcBHzcflsnEfby4xYHR0oTU=; b=DGdy0r6atGyLhQZIh0qfF9sNPTrC4z8UeRvwiPEwwiKvyEutGWbsM91MWBQihqR45ZJvuc KJQ6K+rLbdpDKBp/lry7LDxQzbMI50AFBj+F8071IY/q8cVAU+GsQAmBcQupBR2agqscEX Z0tbqnaZLeEuVnICGMPP4tEI+CFfwEA= Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-373-28cyDZYCN8ikCD6pBfpRwg-1; Wed, 04 Aug 2021 15:37:37 -0400 X-MC-Unique: 28cyDZYCN8ikCD6pBfpRwg-1 Received: by mail-qk1-f199.google.com with SMTP id e11-20020a05620a208bb02903b854c43335so2641848qka.21 for ; Wed, 04 Aug 2021 12:37:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=Ksnx6CHFwn6pJOfE3ztxCcBHzcflsnEfby4xYHR0oTU=; b=ogEsubyYxiR6g2zEyyVkascyVsfXupP1lPOjPZdDB7AZxTbEw3wwcLUZ4LBjF7lIXh QFC1zhbRTYpK8hXIVXMv/9UgTNdSgKY+Y8ZaAd7OS8blH1607zISCMq55zomGL23C5h4 t92BmRA96oGUzfrWdLmpql2LwW6/evfY1KXhOk5pvvLCkOhmuK0uKUgE+mn0VWTAnZDY OJ6OdM8dg5HGHJKO0E86b+/9uTXQNA9QZJPilEuTKwlMuOMtuxn3fVC9/Z46KnL9uyM2 CsEVY2+M5PCzJSlZcXQ0xEJXGO3AXqV7dU6ev1rbIcObrTK2ota2zFZygNl5vWJmBH6L HmnQ== X-Gm-Message-State: AOAM530Cp3t/Nmawvo/gtAuYPUknXfmoorx+eTPq6XWg24+BGLGnYxEF 5QFIxdI3+6I5SalmJ7i+vJNi26sYS2yY/0opkST4yWeA6WAVngJF3p2gKsNS68xxuB/njnw7YeF aMRyG2HcZ+Md8SuO9DFRKQ+lH X-Received: by 2002:a37:e4f:: with SMTP id 76mr1091003qko.44.1628105857140; Wed, 04 Aug 2021 12:37:37 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyES2OgkWswAO3hMKw5RlLcEt2kS2n05ZHJWjW0ITp3UJHYctqa1lS2Ts+0fLSiofg671ACdg== X-Received: by 2002:a37:e4f:: with SMTP id 76mr1090981qko.44.1628105856840; Wed, 04 Aug 2021 12:37:36 -0700 (PDT) Received: from llong.remote.csb ([2601:191:8500:76c0::cdbc]) by smtp.gmail.com with ESMTPSA id b21sm1209730qte.38.2021.08.04.12.37.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Aug 2021 12:37:36 -0700 (PDT) From: Waiman Long X-Google-Original-From: Waiman Long Subject: Re: [patch 15/63] locking: Add base code for RT rw_semaphore and rwlock To: Thomas Gleixner , LKML Cc: Peter Zijlstra , Ingo Molnar , Juri Lelli , Steven Rostedt , Daniel Bristot de Oliveira , Will Deacon , Boqun Feng , Sebastian Andrzej Siewior , Davidlohr Bueso References: <20210730135007.155909613@linutronix.de> <20210730135206.018846923@linutronix.de> Message-ID: <710fff58-1db3-d0c2-21db-b1837d37bfee@redhat.com> Date: Wed, 4 Aug 2021 15:37:35 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210730135206.018846923@linutronix.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/30/21 9:50 AM, Thomas Gleixner wrote: > +static int __sched rwbase_write_lock(struct rwbase_rt *rwb, > + unsigned int state) > +{ > + struct rt_mutex_base *rtm = &rwb->rtmutex; > + unsigned long flags; > + > + /* Take the rtmutex as a first step */ > + if (rwbase_rtmutex_lock_state(rtm, state)) This function is used here before it was defined in next patch (patch 16). Cheers, Longman