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[2620:137:e000::1:20]) by mx.google.com with ESMTP id c23-20020a63da17000000b00478fbebb0b9si33561336pgh.506.2023.01.17.15.14.15; Tue, 17 Jan 2023 15:14:21 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linutronix.de header.s=2020 header.b=FmB0R3FW; dkim=neutral (no key) header.i=@linutronix.de header.s=2020e; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230062AbjAQWtE (ORCPT + 46 others); Tue, 17 Jan 2023 17:49:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230041AbjAQWrA (ORCPT ); Tue, 17 Jan 2023 17:47:00 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A81D749012; Tue, 17 Jan 2023 13:50:41 -0800 (PST) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1673992240; 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=9kRvzgCBVx5CsqZCT0iVya/YuDwD7HvQx/Cdez2OwYE=; b=FmB0R3FWVjeezvBTl+OQJhL03fZ9wAuT6NypmKWIyV9GNt1Fq1xulnRnzRI1YsJqDNaijF 3gUGS/eoBjK+CB1Tk5PE6FX/fqZe8oBmJEKH7crllx2jlfcuVs9qUn8fqT0Ksm4t2/KHWg qvAeQLfjoDK5StxfglOc/NIGTz2JIVKofzXUhmfIK6rgIRqI03lDOhtduH70Oh1JNYpSh7 hI8v9nXWiE+1oEiZKM8vv2yG6m4948t3ubhOi25Vd2Gl3jg5grNKEbNnxHvScJc+sr3ZFI 3x4HI7ztFPTZ17igeR5EpjZbgrN4VHYjptf1vtQrx60zBqvc7W1WbYFfm4sIZA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1673992240; 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=9kRvzgCBVx5CsqZCT0iVya/YuDwD7HvQx/Cdez2OwYE=; b=yjCanFJ8Zq9WV1KKf+FZelQ0VydqlG6wcxsPQ3lHAcaYAt6NUH8Cd1kwT4oXLHjvlfNaZJ K9L7IPHH/y1qWOBg== To: Johan Hovold , Marc Zyngier Cc: x86@kernel.org, platform-driver-x86@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , Hsin-Yi Wang , Mark-PK Tsai Subject: Re: [PATCH v4 19/19] irqdomain: Switch to per-domain locking In-Reply-To: <20230116135044.14998-20-johan+linaro@kernel.org> References: <20230116135044.14998-1-johan+linaro@kernel.org> <20230116135044.14998-20-johan+linaro@kernel.org> Date: Tue, 17 Jan 2023 22:50:39 +0100 Message-ID: <87mt6gkez4.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 16 2023 at 14:50, Johan Hovold wrote: > The IRQ domain structures are currently protected by the global > irq_domain_mutex. Switch to using more fine-grained per-domain locking, > which may potentially speed up parallel probing somewhat. Does it or not? If not then why adding all this churn for no real value? Thanks, tglx