From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764994AbdEYLgM (ORCPT ); Thu, 25 May 2017 07:36:12 -0400 Received: from smtprelay2.synopsys.com ([198.182.60.111]:47511 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761581AbdEYLgK (ORCPT ); Thu, 25 May 2017 07:36:10 -0400 From: Alexey Brodkin To: "noamca@mellanox.com" CC: "linux-kernel@vger.kernel.org" , "linux-snps-arc@lists.infradead.org" Subject: Re: [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault Thread-Topic: [PATCH 02/10] ARC: send ipi to all cpus sharing task mm in case of page fault Thread-Index: AQHS1P+OeV03dRq3tkqQClKMWMQwkqIEyqmA Date: Thu, 25 May 2017 11:36:06 +0000 Message-ID: <1495712165.5393.38.camel@synopsys.com> References: <1495679660-9598-1-git-send-email-noamca@mellanox.com> <1495679660-9598-3-git-send-email-noamca@mellanox.com> In-Reply-To: <1495679660-9598-3-git-send-email-noamca@mellanox.com> Accept-Language: en-US, ru-RU Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.121.8.122] Content-Type: text/plain; charset="utf-8" Content-ID: <342D8847A564C3419170A1B4EEB2A838@internal.synopsys.com> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id v4PBcC2N021227 Hi Noam, On Thu, 2017-05-25 at 05:34 +0300, Noam Camus wrote: > From: Noam Camus > > This patch is derived due to performance issue. > The use case is a page fault that resides on more than the local cpu. > Trying to broadcast all CPUs results on performance degradation. > So we try to avoid this by sending only to the relevant CPUs. > > Signed-off-by: Noam Camus Really nice catch! Reviewed-by: Alexey Brodkin