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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8F194C54E76 for ; Tue, 17 Jan 2023 21:51:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3omc3MzaBRzRLfAaFvJs5f2XCgfOP5smvv1IpIloXX4=; b=txpVYqFxvUfZl9 Vlc6870N6QXIz0Duea13DDnJMosuU0SKlGzX1KkuvsOne97hrHpww5zcMe5wix+WYfXR9K7fM+tR1 t0Et2V0EzF0kve+Lo+K2ylQqk00UGrjydlTcptGTkcFFzEaPiBqHUAccfHmZ5uKluN3rDvFBE3LQz tjqbgJwuNaa0jMJhbjfG4WhVACFhKsQdnNFYmzf+fAReXq9k0d+TJ9dJ3jQ4oduVHLJYYam7ERUyM ObZKQ1478uPVdIDIMn9YQNb/XdDanBFQ2jKdOS4XLEQ5vACHhkMBc3ryhiidZWmx9ydqn3K4x40UW 6idYYZKM7/jAA0DNKYYA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHtqv-00G23Z-1O; Tue, 17 Jan 2023 21:50:45 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pHtqr-00G22e-Ru for linux-arm-kernel@lists.infradead.org; Tue, 17 Jan 2023 21:50:43 +0000 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230117_135042_059281_424531E7 X-CRM114-Status: UNSURE ( 5.93 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel