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dynamic_debug: make netdev_dbg() call __netdev_printk() 

Previously, if dynamic debug was enabled netdev_dbg() was using
dynamic_dev_dbg() to print out the underlying msg. Fix this by making
sure netdev_dbg() uses __netdev_printk().

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jason Baron 2011-08-11 14:36:48 -04:00 committed by Greg Kroah-Hartman
parent ac0ac38f68
commit ffa10cb47a
4 changed files with 48 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
include/linux/dynamic_debug.h
View File

@ -47,6 +47,13 @@ extern int __dynamic_dev_dbg(struct _ddebug *descriptor,
const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
struct net_device;
extern int __dynamic_netdev_dbg(struct _ddebug *descriptor,
const struct net_device *dev,
const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
#define dynamic_pr_debug(fmt, ...) do { \
static struct _ddebug descriptor \
__used \
@ -67,6 +74,16 @@ extern int __dynamic_dev_dbg(struct _ddebug *descriptor,
__dynamic_dev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__); \
} while (0)
#define dynamic_netdev_dbg(dev, fmt, ...) do { \
static struct _ddebug descriptor \
__used \
__attribute__((section("__verbose"), aligned(8))) = \
{ KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__, \
_DPRINTK_FLAGS_DEFAULT }; \
if (unlikely(descriptor.enabled)) \
__dynamic_netdev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__);\
} while (0)
#else
static inline int ddebug_remove_module(const char *mod)

6
include/linux/netdevice.h
View File

@ -2617,6 +2617,9 @@ 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 int netdev_printk(const char *level, const struct net_device *dev,
const char *format, ...)
__attribute__ ((format (printf, 3, 4)));
@ -2644,8 +2647,7 @@ extern int netdev_info(const struct net_device *dev, const char *format, ...)
#elif defined(CONFIG_DYNAMIC_DEBUG)
#define netdev_dbg(__dev, format, args...) \
do { \
dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
netdev_name(__dev), ##args); \
dynamic_netdev_dbg(__dev, format, ##args); \
} while (0)
#else
#define netdev_dbg(__dev, format, args...) \

25
lib/dynamic_debug.c
View File

@ -33,6 +33,7 @@
#include <linux/hardirq.h>
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/netdevice.h>
extern struct _ddebug __start___verbose[];
extern struct _ddebug __stop___verbose[];
@ -503,6 +504,30 @@ int __dynamic_dev_dbg(struct _ddebug *descriptor,
}
EXPORT_SYMBOL(__dynamic_dev_dbg);
int __dynamic_netdev_dbg(struct _ddebug *descriptor,
const struct net_device *dev, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
int res;
BUG_ON(!descriptor);
BUG_ON(!fmt);
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
res = dynamic_emit_prefix(descriptor);
res += __netdev_printk(KERN_CONT, dev, &vaf);
va_end(args);
return res;
}
EXPORT_SYMBOL(__dynamic_netdev_dbg);
static __initdata char ddebug_setup_string[1024];
static __init int ddebug_setup_query(char *str)
{

3
net/core/dev.c
View File

@ -6290,7 +6290,7 @@ const char *netdev_drivername(const struct net_device *dev)
return empty;
}
static int __netdev_printk(const char *level, const struct net_device *dev,
int __netdev_printk(const char *level, const struct net_device *dev,
struct va_format *vaf)
{
int r;
@ -6305,6 +6305,7 @@ static int __netdev_printk(const char *level, const struct net_device *dev,
return r;
}
EXPORT_SYMBOL(__netdev_printk);
int netdev_printk(const char *level, const struct net_device *dev,
const char *format, ...)