From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757946Ab0JLRlL (ORCPT ); Tue, 12 Oct 2010 13:41:11 -0400 Received: from p3plsmtpa01-09.prod.phx3.secureserver.net ([72.167.82.89]:59431 "HELO p3plsmtpa01-09.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757306Ab0JLRlK (ORCPT ); Tue, 12 Oct 2010 13:41:10 -0400 Message-ID: <4CB49EB3.6090000@sailtheuniverse.com> Date: Tue, 12 Oct 2010 10:45:23 -0700 From: Hank Janssen User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4 MIME-Version: 1.0 To: hjanssen@microsoft.com, Haiyang Zhang , gregkh@suse.de, virtualization@lists.osdl.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/1] staging: hv: Doubled ringbuffer size for Hyper-v network driver Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hank Janssen Double the default network ringsize buffer for Hyper-V network driver. In very heavily loaded systems the there is a chance you run out of ringbuffer space and error out. Signed-off-by: Haiyang Zhang Signed-off-by: Hank Janssen --- drivers/staging/hv/netvsc_drv.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index 56e1157..45e082a 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -59,7 +59,7 @@ struct netvsc_driver_context { /* Need this many pages to handle worst case fragmented packet */ #define PACKET_PAGES_HIWATER (MAX_SKB_FRAGS + 2) -static int ring_size = roundup_pow_of_two(2*MAX_SKB_FRAGS+1); +static int ring_size = 128; module_param(ring_size, int, S_IRUGO); MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); -- 1.6.0.2