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[2620:137:e000::3:3]) by mx.google.com with ESMTPS id by37-20020a056a0205a500b0059b64b153f6si3633181pgb.845.2023.10.18.15.53.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 15:53:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) client-ip=2620:137:e000::3:3; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=Ysch+2hE; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e header.b=1z15eYut; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by lipwig.vger.email (Postfix) with ESMTP id C89FB822918B; Wed, 18 Oct 2023 15:53:25 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at lipwig.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231182AbjJRWxK (ORCPT + 99 others); Wed, 18 Oct 2023 18:53:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229632AbjJRWxJ (ORCPT ); Wed, 18 Oct 2023 18:53:09 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D26B7115 for ; Wed, 18 Oct 2023 15:53:07 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1697669586; 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: in-reply-to:in-reply-to:references:references; bh=aVtOactJ1TymnCHMGNnseSmaZvbustdeqqgs9YNOttw=; b=Ysch+2hE7gZoO4Qjd+aj7FnyWHzDCjfW4UPnXGM0S3fbccS5V6CbBZHDSTOuhQi03pDodd jVfeynUjZ3svRNvkYgXFVizsgwYgFPm1vkD0A/IFPgRUu9OP9dbubHuYs1+48r0Nt4nZxb 7i+ShMbFMZBvalRIQ1p5LghwuASVYBFotDRLwqvcLNWG7kHz5SUG/ZHEJSYFQXx4h39LZQ qipWXN5ox9kbahUJOewlhdwCdyyC3zMS3LqJAmv0XGZMahPdBuQ9SP+i0KDBsWDocCCSLO UPZBjM7kBHGbnKZWgJusgHWOWdoS3AN+7CIPbhtHOdjeaUAZ4gZEz/eF231y9w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1697669586; 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: in-reply-to:in-reply-to:references:references; bh=aVtOactJ1TymnCHMGNnseSmaZvbustdeqqgs9YNOttw=; b=1z15eYutbjRCKrR8dISYOIoDdqZUhSkpp/QQKbwHDPWI4V6wEtoI9q/kEA9Bw2IBVx1ht3 k/hmWXX13pk4InCQ== To: paulmck@kernel.org, Ankur Arora Cc: Linus Torvalds , Peter Zijlstra , linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, rostedt@goodmis.org, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, jgross@suse.com, andrew.cooper3@citrix.com, Frederic Weisbecker , urezki@gmail.com Subject: Re: [PATCH v2 7/9] sched: define TIF_ALLOW_RESCHED In-Reply-To: <7520a5b9-b604-4da2-b874-32505f175f39@paulmck-laptop> References: <87ttrngmq0.ffs@tglx> <87jzshhexi.ffs@tglx> <87il74qghh.fsf@oracle.com> <7520a5b9-b604-4da2-b874-32505f175f39@paulmck-laptop> Date: Thu, 19 Oct 2023 00:53:05 +0200 Message-ID: <875y334k6m.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Wed, 18 Oct 2023 15:53:25 -0700 (PDT) On Wed, Oct 18 2023 at 10:51, Paul E. McKenney wrote: > On Wed, Oct 18, 2023 at 05:09:46AM -0700, Ankur Arora wrote: Can you folks please trim your replies. It's annoying to scroll through hundreds of quoted lines to figure out that nothing is there. >> This probably allows for more configuration flexibility across archs? >> Would allow for TREE_RCU=y, for instance. That said, so far I've only >> been working with PREEMPT_RCU=y.) > > Then this is a bug that needs to be fixed. We need a way to make > RCU readers non-preemptible. Why?