Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753913AbaJHSKr (ORCPT ); Wed, 8 Oct 2014 14:10:47 -0400 Received: from casper.infradead.org ([85.118.1.10]:34797 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751046AbaJHSKq (ORCPT ); Wed, 8 Oct 2014 14:10:46 -0400 Date: Wed, 8 Oct 2014 20:10:44 +0200 From: Peter Zijlstra To: Matt Fleming Cc: Ingo Molnar , Jiri Olsa , Arnaldo Carvalho de Melo , Thomas Gleixner , linux-kernel@vger.kernel.org, "H. Peter Anvin" , Matt Fleming Subject: Re: [PATCH 11/11] perf/x86/intel: Perform rotation on Intel CQM RMIDs Message-ID: <20141008181044.GI4750@worktop.programming.kicks-ass.net> References: <1411567455-31264-1-git-send-email-matt@console-pimps.org> <1411567455-31264-12-git-send-email-matt@console-pimps.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1411567455-31264-12-git-send-email-matt@console-pimps.org> User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 24, 2014 at 03:04:15PM +0100, Matt Fleming wrote: > + limbo_bitmap = kmalloc(sizeof(long) * BITS_TO_LONGS(nr_bits) * > + nr_cpumask_bits, GFP_KERNEL); That's going to be a _huge_ amount of memory on SGI class systems. Do we really need per-cpu storage for this? -- 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/