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 2F903C6FA82 for ; Wed, 21 Sep 2022 02:35:54 +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:Subject:References: In-Reply-To:Message-ID:Cc:To:From:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=oo1a5nbCZqJ7JL8FJMdhNcmFo957eHgBYWbq6QVtTYM=; b=eEPGO2Doy782Srz6+A4pUudygM LR3PhxIGpclWub/qEr/YqHSrWfjqU8EgkfLCJKwIL4DP7SiIOGvHizPYQggMBWaOY1sEgMUY19J0K 27i4yLhaGa7ocQu86HzOiiIr6XXDODOBPH6ep5Q48rG3fk0p8xEF2Slcn5/YssSPHNQi8lf+47Iqh tiMi5Xzg0mtCe4oraQ3uKWBtIdRdzR9EBHUaaqe0f8sUlcBPEwuqOj+QRjmAVKfRytpFHq8l5Etmd G1glA/Jb7MR33aj0CwuXvLaHjYQkZKV4UGb+ioHQ91eRI+70Vco/RzGQ0wZmESZcSWkquVGnQc7Zm Ff37m8iw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oapZb-008INx-3W; Wed, 21 Sep 2022 02:34:51 +0000 Received: from sender4-op-o18.zoho.com ([136.143.188.18]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oapZX-008IMH-Qd for linux-arm-kernel@lists.infradead.org; Wed, 21 Sep 2022 02:34:49 +0000 ARC-Seal: i=1; a=rsa-sha256; t=1663727674; cv=none; d=zohomail.com; s=zohoarc; b=OOV9z9O/++jtMfSYY4Uar/y9E5tpqrIGDGsybXROen+qaDEdtJWagMZRLUBh/dmUy6S7t0a2drgrR5mEq0o9jYUF+NhITS865WfJ9F3w/tpQsiK9Y8Qx2dtRFulE7iko00r5P62J6J+tnlDAkInX2Jy+OY79XfOyCyqQCdHW5Hw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1663727674; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=b3yLum5++xcPqr//Fa0JsRrJanBnoFUsw6ZTMF5wuJY=; b=ODax8GW/hcJMBM9XMRu8+8oioGwAhSH8WdN9rJ70PIgO8oFpIOMivZY4r7JQj5wj5iBr5e9SACmyb6xpU1W5Yv57KBiS2gbMflt98XzAXWiWRTBcfu0AlLHoCv1iT5afni7Jh8jCrBiUyUNpXSL/EKoaOR7T8O2ThXIbF6sQ21s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=linux.beauty; spf=pass smtp.mailfrom=me@linux.beauty; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1663727674; s=zmail; d=linux.beauty; i=me@linux.beauty; h=Date:Date:From:From:To:To:Cc:Cc:Message-ID:In-Reply-To:References:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=b3yLum5++xcPqr//Fa0JsRrJanBnoFUsw6ZTMF5wuJY=; b=kQs04voafdJcU4D0nv7zGZq7X7Jo2qPdvZjWnXwMu4Frwb9nmrASb1+etn0F2BEf m6LVcVpCdfgOR6EMtj3XOSpn+I4mEKBV3/NEHfMnBRggoucOscjkgJKW4I0feirJwFu rtejbmhYAotrmCEwGLqG3UUUrVQT2tUBs56LQsZw= Received: from mail.zoho.com by mx.zohomail.com with SMTP id 1663727672705871.3228773776767; Tue, 20 Sep 2022 19:34:32 -0700 (PDT) Date: Wed, 21 Sep 2022 04:34:32 +0200 From: Li Chen To: "Russell King (Oracle)" Cc: "arnd bergmann" , "linux-arm-kernel" Message-ID: <1835de59d71.11f05fad11576394.1145073103918319714@linux.beauty> In-Reply-To: References: <183588fd5a7.1074ac6241209386.2442883306267550831@linux.beauty> <45d1a6b4-eb28-4392-84a3-d30a2f8e150a@www.fastmail.com> <1835a49844d.111e968dc1302721.8856919484302602882@linux.beauty> Subject: Re: Why GICD_ITARGETSR is not used by Linux MIME-Version: 1.0 Importance: Medium User-Agent: Zoho Mail X-Mailer: Zoho Mail X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220920_193447_970578_823D6DF5 X-CRM114-Status: GOOD ( 12.61 ) 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 Hi Russell, ---- On Tue, 20 Sep 2022 12:14:24 +0200 Russell King (Oracle) wrote --- > On Tue, Sep 20, 2022 at 11:09:38AM +0100, Russell King (Oracle) wrote: > Oh, I just remembered an additional detail. There was the irqbalance > daemon that used to work at that time which would do the distribution > from userspace - and it knew various policies about interrupts that > were found to be beneficial on x86. Such as not moving busy ethernet > interrupts amongst the CPUs due to networking paths being "hot" in the > cache, vs other interrupts where that didn't matter so much. Can you help paste the irqbalance daemon project link? I want to learn more about it, thanks. Regards, Li _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel