From: Jason Baron <jbaron@redhat.com>
To: gregkh@suse.de
Cc: joe@perches.com, jim.cromie@gmail.com, bvanassche@acm.org,
linux-kernel@vger.kernel.org, davem@davemloft.net,
aloisio.almeida@openbossa.org, netdev@vger.kernel.org
Subject: [PATCH 07/11] dynamic_debug: make netdev_dbg() call __netdev_printk()
Date: Thu, 11 Aug 2011 14:36:48 -0400 [thread overview]
Message-ID: <5514795fe63ccfd4b3a80283ed04a526abe3c59d.1313085588.git.jbaron@redhat.com> (raw)
In-Reply-To: <cover.1313085588.git.jbaron@redhat.com>
From: Jason Baron <jbaron@redhat.com>
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>
---
include/linux/dynamic_debug.h | 17 +++++++++++++++++
include/linux/netdevice.h | 6 ++++--
lib/dynamic_debug.c | 25 +++++++++++++++++++++++++
net/core/dev.c | 3 ++-
4 files changed, 48 insertions(+), 3 deletions(-)
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 843cb9e..feaac1e 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -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)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ddee79b..9333a03 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -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...) \
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 4fc03dd..ee3b9ba 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -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)
{
diff --git a/net/core/dev.c b/net/core/dev.c
index 17d67b5..c47a7bc 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -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, ...)
--
1.7.5.4
next prev parent reply other threads:[~2011-08-11 18:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 18:36 [PATCH 00/11] various fixes v3 Jason Baron
2011-08-11 18:36 ` [PATCH 01/11] dynamic_debug: Add __dynamic_dev_dbg Jason Baron
2011-08-11 18:36 ` Jason Baron [this message]
2011-09-01 14:57 ` [PATCH ] dynamic_debug: call __netdev_printk only for CONFIG_NET Arnd Bergmann
2011-09-01 15:18 ` Jason Baron
2011-09-18 8:27 ` Greg KH
2011-09-18 17:21 ` Randy Dunlap
2011-09-18 18:27 ` Greg KH
2011-09-18 18:42 ` Randy Dunlap
2011-09-19 13:48 ` Jason Baron
2011-09-19 16:49 ` Randy Dunlap
2011-08-11 18:36 ` [PATCH 08/11] dynamic_debug: make netif_dbg() call __netdev_printk() Jason Baron
2011-08-23 1:32 ` [PATCH 00/11] various fixes v3 Greg KH
2011-08-23 13:54 ` Jason Baron
2011-08-23 15:15 ` Greg KH
-- strict thread matches above, loose matches on Subject: below --
2011-07-14 16:09 [PATCH 00/11] various fixes v2 Jason Baron
2011-07-14 16:09 ` [PATCH 07/11] dynamic_debug: make netdev_dbg() call __netdev_printk() Jason Baron
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