From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e2.ny.us.ibm.com (e2.ny.us.ibm.com [32.97.182.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e2.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id EBC8DB70DF for ; Tue, 28 Sep 2010 09:18:18 +1000 (EST) Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by e2.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id o8RN2mVg012592 for ; Mon, 27 Sep 2010 19:02:48 -0400 Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o8RNHpRO410772 for ; Mon, 27 Sep 2010 19:17:51 -0400 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o8RNHpLf004816 for ; Mon, 27 Sep 2010 20:17:51 -0300 From: Nishanth Aravamudan To: nacc@us.ibm.com 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> Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, miltonm@bga.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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