netdev_printk/dynamic_netdev_dbg: Directly call printk_emit

A lot of stack is used in recursive printks with %pV.

Using multiple levels of %pV (a logging function with %pV
that calls another logging function with %pV) can consume
more stack than necessary.

Avoid excessive stack use by not calling dev_printk from
netdev_printk and dynamic_netdev_dbg.  Duplicate the logic
and form of dev_printk instead.

Make __netdev_printk static.
Remove EXPORT_SYMBOL(__netdev_printk)
Whitespace and brace style neatening.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: David S. Miller <davem@davemloft.net>
Tested-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 59dc05f38247..5f49cc0a107e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2720,9 +2720,6 @@ static inline const char *netdev_name(const struct net_device *dev)
         return dev->name;
 }
 
-extern int __netdev_printk(const char *level, const struct net_device *dev,
-                        struct va_format *vaf);
-
 extern __printf(3, 4)
 int netdev_printk(const char *level, const struct net_device *dev,
                   const char *format, ...);