From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx196.postini.com [74.125.245.196]) by kanga.kvack.org (Postfix) with SMTP id D98116B004D for ; Fri, 16 Dec 2011 08:23:52 -0500 (EST) Date: Fri, 16 Dec 2011 14:23:50 +0100 From: Stanislaw Gruszka Subject: [PATCH -mm] slub: debug_guardpage_minorder documentation tweak Message-ID: <20111216132349.GB14271@redhat.com> References: <1321633507-13614-1-git-send-email-sgruszka@redhat.com> <20111212145948.GA2380@redhat.com> <201112130021.41429.rjw@sisk.pl> <20111216132155.GA14271@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20111216132155.GA14271@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes , Andrew Morton Cc: "Rafael J. Wysocki" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman , Andrea Arcangeli , Christoph Lameter Signed-off-by: Stanislaw Gruszka --- Documentation/ABI/testing/sysfs-kernel-slab | 6 ++++-- Documentation/vm/slub.txt | 7 ++++--- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab index bfd1d9f..91bd6ca 100644 --- a/Documentation/ABI/testing/sysfs-kernel-slab +++ b/Documentation/ABI/testing/sysfs-kernel-slab @@ -346,8 +346,10 @@ Description: number of objects per slab. If a slab cannot be allocated because of fragmentation, SLUB will retry with the minimum order possible depending on its characteristics. - When debug_guardpage_minorder > 0 parameter is specified, the - minimum possible order is used and cannot be changed. + When debug_guardpage_minorder=N (N > 0) parameter is specified + (see Documentation/kernel-parameters.txt), the minimum possible + order is used and this sysfs entry can not be used to change + the order at run time. What: /sys/kernel/slab/cache/order_fallback Date: April 2008 diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt index dbf02ad..1514d9f 100644 --- a/Documentation/vm/slub.txt +++ b/Documentation/vm/slub.txt @@ -131,9 +131,10 @@ slub_min_objects. slub_max_order specified the order at which slub_min_objects should no longer be checked. This is useful to avoid SLUB trying to generate super large order pages to fit slub_min_objects of a slab cache with -large object sizes into one high order page. Setting parameter -debug_guardpage_minorder > 0 forces setting slub_max_order to 0, what -cause minimum possible order of slabs allocation. +large object sizes into one high order page. Setting command line +parameter debug_guardpage_minorder=N (N > 0), forces setting +slub_max_order to 0, what cause minimum possible order of slabs +allocation. SLUB Debug output ----------------- -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org