From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760520Ab0I0XSK (ORCPT ); Mon, 27 Sep 2010 19:18:10 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:55713 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759394Ab0I0XSI (ORCPT ); Mon, 27 Sep 2010 19:18:08 -0400 From: Nishanth Aravamudan To: nacc@us.ibm.com Cc: miltonm@bga.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 0/2] Fix IRQ round-robing w/o irqbalance on pseries Date: Mon, 27 Sep 2010 16:17:41 -0700 Message-Id: <1285629463-27699-1-git-send-email-nacc@us.ibm.com> X-Mailer: git-send-email 1.7.0.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We have received reports on power systems not running irqbalance where all interrupts are being routed to CPU0 rather than being interleaved by default across the system. Current firmware only allows either sending interrupts to all CPUs or sending them to one CPU. The following two patches address this issue by fixing the mask used in generic code and by fixing the check for the "all" setting in the pseries code. Nishanth Aravamudan (2): IRQ: use cpu_possible_mask rather than online_mask in setup_affinity pseries/xics: use cpu_possible_mask rather than cpu_all_mask arch/powerpc/platforms/pseries/xics.c | 2 +- kernel/irq/manage.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org