Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754814AbYCUHzX (ORCPT ); Fri, 21 Mar 2008 03:55:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752395AbYCUHzM (ORCPT ); Fri, 21 Mar 2008 03:55:12 -0400 Received: from neuf-infra-smtp-out-sp604007av.neufgp.fr ([84.96.92.120]:38029 "EHLO neuf-infra-smtp-out-sp604007av.neufgp.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752369AbYCUHzL (ORCPT ); Fri, 21 Mar 2008 03:55:11 -0400 Message-ID: <47E369D8.2010904@cosmosbay.com> Date: Fri, 21 Mar 2008 08:55:04 +0100 From: Eric Dumazet User-Agent: Thunderbird 2.0.0.12 (Windows/20080213) MIME-Version: 1.0 To: Christoph Lameter CC: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [03/14] vmallocinfo: Support display of vcompound for a virtual compound page References: <20080321061703.921169367@sgi.com> <20080321061724.795229401@sgi.com> In-Reply-To: <20080321061724.795229401@sgi.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2054 Lines: 56 Christoph Lameter a ?crit : > Add another flag to the vmalloc subsystem to mark virtual compound pages. > > Signed-off-by: Christoph Lameter > > --- > include/linux/vmalloc.h | 1 + > mm/vmalloc.c | 3 +++ > 2 files changed, 4 insertions(+) > > Index: linux-2.6.25-rc5-mm1/include/linux/vmalloc.h > =================================================================== > --- linux-2.6.25-rc5-mm1.orig/include/linux/vmalloc.h 2008-03-19 18:17:42.093443900 -0700 > +++ linux-2.6.25-rc5-mm1/include/linux/vmalloc.h 2008-03-19 18:27:20.150422445 -0700 > @@ -12,6 +12,7 @@ struct vm_area_struct; > #define VM_MAP 0x00000004 /* vmap()ed pages */ > #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ > #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ > +#define VM_VCOMPOUND 0x00000020 /* Page allocator fallback */ > /* bits [20..32] reserved for arch specific ioremap internals */ > > /* > Index: linux-2.6.25-rc5-mm1/mm/vmalloc.c > =================================================================== > --- linux-2.6.25-rc5-mm1.orig/mm/vmalloc.c 2008-03-19 18:18:02.689633934 -0700 > +++ linux-2.6.25-rc5-mm1/mm/vmalloc.c 2008-03-19 18:27:20.150422445 -0700 > @@ -974,6 +974,9 @@ static int s_show(struct seq_file *m, vo > if (v->flags & VM_VPAGES) > seq_printf(m, " vpages"); > > + if (v->flags & VM_VCOMPOUND) > + seq_printf(m, " vcompound"); > + > seq_putc(m, '\n'); > return 0; > } > I would love to see NUMA information as well on vmallocinfo, but have currently no available time to prepare a patch. Counters with numbers of pages per node would be great. (like in /proc/pid/numa_maps) N0=2 N1=2 N2=2 N3=2 This way we could check hashdist is working or not, since it depends on various numa policies :) -- 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/