Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753975Ab2EXInE (ORCPT ); Thu, 24 May 2012 04:43:04 -0400 Received: from casper.infradead.org ([85.118.1.10]:36823 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752759Ab2EXInA (ORCPT ); Thu, 24 May 2012 04:43:00 -0400 Subject: Re: [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblings of SMT From: Peter Zijlstra To: Alex Shi Cc: Jan Beulich , borislav.petkov@amd.com, arnd@arndb.de, akinobu.mita@gmail.com, eric.dumazet@gmail.com, fweisbec@gmail.com, rostedt@goodmis.org, hughd@google.com, jeremy@goop.org, len.brown@intel.com, tony.luck@intel.com, yongjie.ren@intel.com, kamezawa.hiroyu@jp.fujitsu.com, seto.hidetoshi@jp.fujitsu.com, penberg@kernel.org, yinghai@kernel.org, tglx@linutronix.de, akpm@linux-foundation.org, ak@linux.intel.com, luto@mit.edu, avi@redhat.com, dhowells@redhat.com, mingo@redhat.com, riel@redhat.com, cpw@sgi.com, steiner@sgi.com, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, hpa@zytor.com, Rusty Russell In-Reply-To: <4FBDF200.7060608@intel.com> References: <1337782555-8088-1-git-send-email-alex.shi@intel.com> <1337782555-8088-9-git-send-email-alex.shi@intel.com> <4FBD18D20200007800085951@nat28.tlf.novell.com> <1337792984.9783.37.camel@laptop> <4FBDF200.7060608@intel.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 24 May 2012 10:42:50 +0200 Message-ID: <1337848970.9783.72.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 635 Lines: 17 On Thu, 2012-05-24 at 16:32 +0800, Alex Shi wrote: > So, I use cpumask_t in stack. cpumask_t is 512 bytes with NR_CPUS=4096, that's generally considered too big to be on stack. A number of people spend a lot of time removing cpumask_t from stacks a while ago, I'm very sure they'll not be happy if you're going to add it back. Rusty, what was the plan on removing cpumask_t altogether? -- 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/