Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753452AbYGOVPB (ORCPT ); Tue, 15 Jul 2008 17:15:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755776AbYGOVOc (ORCPT ); Tue, 15 Jul 2008 17:14:32 -0400 Received: from relay2.sgi.com ([192.48.171.30]:33419 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755318AbYGOVOa (ORCPT ); Tue, 15 Jul 2008 17:14:30 -0400 Message-Id: <20080715211430.040646000@polaris-admin.engr.sgi.com> References: <20080715211429.454823000@polaris-admin.engr.sgi.com> User-Agent: quilt/0.46-1 Date: Tue, 15 Jul 2008 14:14:33 -0700 From: Mike Travis To: Rusty Russell , Ingo Molnar , Andrew Morton Cc: "H. Peter Anvin" , Christoph Lameter , Jack Steiner , linux-kernel@vger.kernel.org, Dean Nelson Subject: [PATCH 4/8] cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c Content-Disposition: inline; filename=optimize-cpu_mask_of_cpu-in-drivers_misc_sgi-xp_xpc_main_c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1325 Lines: 38 * Optimize various places where a pointer to the cpumask_of_cpu value will result in reducing stack pressure. Based on linux-2.6.tip/master at the following commit: commit 0a91813e16ebd5c2d9b5c2acd5b7c91742112c4f Merge: 9a635fa... 724dce0... Author: Ingo Molnar Date: Tue Jul 15 14:55:17 2008 +0200 Signed-off-by: Mike Travis Cc: Dean Nelson --- drivers/misc/sgi-xp/xpc_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- linux-2.6.tip.orig/drivers/misc/sgi-xp/xpc_main.c +++ linux-2.6.tip/drivers/misc/sgi-xp/xpc_main.c @@ -229,10 +229,11 @@ xpc_hb_checker(void *ignore) int last_IRQ_count = 0; int new_IRQ_count; int force_IRQ = 0; + cpumask_of_cpu_ptr(cpumask, XPC_HB_CHECK_CPU); /* this thread was marked active by xpc_hb_init() */ - set_cpus_allowed(current, cpumask_of_cpu(XPC_HB_CHECK_CPU)); + set_cpus_allowed_ptr(current, cpumask); /* set our heartbeating to other partitions into motion */ xpc_hb_check_timeout = jiffies + (xpc_hb_check_interval * HZ); -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/