Attachment 148369 Details for Bug 229274 – Debugging netconsole patch

[patch] Debugging netconsole patch

netconsole-debug.patch (text/plain), 1.03 KB, created by Chris Lalancette on 2007-02-19 21:32:08 UTC

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Creator: Chris Lalancette

Created: 2007-02-19 21:32:08 UTC

Size: 1.03 KB

patch

obsolete

>--- linux-2.4.21/drivers/net/netconsole.c.orig	2007-02-19 19:44:24.000000000 -0500
>+++ linux-2.4.21/drivers/net/netconsole.c	2007-02-19 19:42:14.000000000 -0500
>@@ -102,6 +102,8 @@ static int new_arp = 0;
> static unsigned char arp_sha[ETH_ALEN], arp_tha[ETH_ALEN];
> static u32 arp_sip, arp_tip;
> 
>+static int skip_network = 0;
>+
> static void send_netconsole_arp(struct net_device *dev);
> 
> static void __refill_netconsole_skbs(void)
>@@ -247,7 +251,15 @@ repeat_poll:
> 		return;
> 	}
> 
>-	spin_lock(&dev->xmit_lock);
>+	if(poll_count > 1)
>+		printk(KERN_ALERT "poll_count is %d\n",poll_count);
>+
>+	if (!spin_trylock(&dev->xmit_lock)) {
>+	  skip_network = 1;
>+	  dump_stack();
>+	  skip_network = 0;
>+	}
>+	//	spin_lock(&dev->xmit_lock);
> 	dev->xmit_lock_owner = smp_processor_id();
> 
> 	if (netif_queue_stopped(dev)) {
>@@ -466,7 +480,7 @@ static void write_netconsole_msg(struct 
> 	reply_t reply;
> 
> 	dev = netconsole_dev;
>-	if (!dev || !emit_printks)
>+	if (!dev || !emit_printks || skip_network)
> 		return;
> 
> 	if (dev->poll_controller && netif_running(dev)) {

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Attachments on bug 229274: 148369