Attachment 148441 Details for Bug 226701 – Make netdump queue packets while dumping state to the console

[patch] Make netdump queue packets while dumping state to the console

netdump-pause_and_queue.patch (text/plain), 1.36 KB, created by Bryn M. Reeves on 2007-02-20 20:52:50 UTC

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Creator: Bryn M. Reeves

Created: 2007-02-20 20:52:50 UTC

Size: 1.36 KB

patch

obsolete

>Index: linux-2.6.9/drivers/net/netdump.c
>===================================================================
>--- linux-2.6.9.orig/drivers/net/netdump.c
>+++ linux-2.6.9/drivers/net/netdump.c
>@@ -93,6 +93,14 @@ static LIST_HEAD(request_list);
> static unsigned long long t0, jiffy_cycles = 1000 * (1000000/HZ);
> void *netdump_stack;
> 
>+#define MAX_PAUSED_REQ 20
>+static unsigned netdump_paused = 0;
>+
>+static void pause_netdump(unsigned p)
>+{
>+	netdump_mode = !p;
>+	netdump_paused = p;
>+}
> 
> static void update_jiffies(void)
> {
>@@ -164,8 +172,9 @@ void netdump_rx(struct netpoll *np, shor
> {
> 	req_t *req, *__req = (req_t *)data;
> 
>-	if (!netdump_mode)
>+	if (!netdump_mode && !netdump_paused)
> 		return;
>+
> #if DEBUG
> 	{
> 		static int packet_count;
>@@ -178,6 +187,11 @@ void netdump_rx(struct netpoll *np, shor
> 		return;
> 	}
> 
>+	if(netdump_paused && (nr_req >= MAX_PAUSED_REQ)){
>+		printk("request queue overflow - dropping it.\n");
>+		return;
>+	}
>+
> 	req = alloc_req();
> 	if (!req) {
> 		printk("no more RAM to allocate request - dropping it.\n");
>@@ -475,12 +489,13 @@ static asmlinkage void netpoll_netdump(s
> 
> 			send_netdump_msg(&np, tmp, strlen(tmp), &reply);
> 
>-			netdump_mode = 0;
>+			/* pause netdump to allow console output */
>+			pause_netdump(1);
> 			if (regs)
> 				show_regs(regs);
> 			show_state();
> 			show_mem();
>-			netdump_mode = 1;
>+			pause_netdump(0);
> 			break;
> 
> 		default:

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Attachments on bug 226701: 147064 | 147065 | 148441 | 148827 | 148828 | 148947 | 149359