From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brice Goglin Subject: [PATCH 1/3] myri10ge: limit the number of recoveries Date: Mon, 11 Jun 2007 20:26:31 +0200 Message-ID: <466D93D7.5060604@myri.com> References: <466D9380.7090605@myri.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Jeff Garzik Return-path: Received: from dsl.myri.com ([64.172.73.26]:2003 "EHLO myri.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752680AbXFKS0A (ORCPT ); Mon, 11 Jun 2007 14:26:00 -0400 In-Reply-To: <466D9380.7090605@myri.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Limit the number of recoveries from a NIC hw watchdog reset to 1 by default. It enables detection of defective NICs immediately since these memory parity errors are expected to happen very rarely (less than once per century*NIC). Signed-off-by: Brice Goglin --- drivers/net/myri10ge/myri10ge.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) Index: linux-rc/drivers/net/myri10ge/myri10ge.c =================================================================== --- linux-rc.orig/drivers/net/myri10ge/myri10ge.c 2007-05-30 20:58:22.000000000 +0200 +++ linux-rc/drivers/net/myri10ge/myri10ge.c 2007-06-04 19:01:54.000000000 +0200 @@ -279,6 +279,8 @@ module_param(myri10ge_fill_thresh, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed\n"); +static int myri10ge_reset_recover = 1; + static int myri10ge_wcfifo = 0; module_param(myri10ge_wcfifo, int, S_IRUGO); MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n"); @@ -2730,8 +2732,14 @@ * For now, just report it */ reboot = myri10ge_read_reboot(mgp); printk(KERN_ERR - "myri10ge: %s: NIC rebooted (0x%x), resetting\n", - mgp->dev->name, reboot); + "myri10ge: %s: NIC rebooted (0x%x),%s resetting\n", + mgp->dev->name, reboot, + myri10ge_reset_recover ? " " : " not"); + if (myri10ge_reset_recover == 0) + return; + + myri10ge_reset_recover--; + /* * A rebooted nic will come back with config space as * it was after power was applied to PCIe bus.