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authorMichael Ellerman <michael@ellerman.id.au>2008-04-15 00:49:04 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-15 00:49:04 -0700
commit0517deed78be9cc9ce9799bf15da58fd0d2078bb (patch)
tree03b831f70096f99162a8cb26a55e01b64cd97926
parent56690c2151d33534f0537fd03c533eda81d96f0f (diff)
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>
-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);