summaryrefslogtreecommitdiffstats
path: root/drivers/net
diff options
context:
space:
mode:
authorMichael Ellerman <michael@ellerman.id.au>2008-04-15 09:49:04 +0200
committerDavid S. Miller <davem@davemloft.net>2008-04-15 09:49:04 +0200
commit0517deed78be9cc9ce9799bf15da58fd0d2078bb (patch)
tree03b831f70096f99162a8cb26a55e01b64cd97926 /drivers/net
parent[CAN]: Update documentation of struct sockaddr_can (diff)
downloadlinux-0517deed78be9cc9ce9799bf15da58fd0d2078bb.tar.xz
linux-0517deed78be9cc9ce9799bf15da58fd0d2078bb.zip
netconsole: only set CON_PRINTBUFFER if the user specifies a netconsole
Since 0bcc1816188e570bde1d56a208996660f2633ae0 (netconsole: Support dynamic reconfiguration using configfs), the netconsole is always registered, regardless of whether the user actually specified a netconsole configuration on the command line. However because netconsole has CON_PRINTBUFFER set, when it is registered it causes the printk buffer to be replayed to all consoles. When there is no netconsole configured this is a) pointless, and b) somewhat annoying for the user of the existing console. So instead we should only set CON_PRINTBUFFER if there is a netconsole configuration found on the command line. This retains the existing behaviour if a netconsole is setup by the user, and avoids spamming other consoles when we're only registering for the dynamic netconsole case. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/netconsole.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 501e451be911..665341e43055 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -730,7 +730,7 @@ static void write_msg(struct console *con, const char *msg, unsigned int len)
static struct console netconsole = {
.name = "netcon",
- .flags = CON_ENABLED | CON_PRINTBUFFER,
+ .flags = CON_ENABLED,
.write = write_msg,
};
@@ -749,6 +749,9 @@ static int __init init_netconsole(void)
err = PTR_ERR(nt);
goto fail;
}
+ /* Dump existing printks when we register */
+ netconsole.flags |= CON_PRINTBUFFER;
+
spin_lock_irqsave(&target_list_lock, flags);
list_add(&nt->list, &target_list);
spin_unlock_irqrestore(&target_list_lock, flags);