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warn: Turn the netdev timeout WARN_ON() into a WARN()

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this patch turns the netdev timeout WARN_ON_ONCE() into a WARN_ONCE(),
so that the device and driver names are inside the warning message.
This helps automated tools like kerneloops.org to collect the data
and do statistics, as well as making it more likely that humans
cut-n-paste the important message as part of a bugreport.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Arjan van de Ven 2008-09-15 16:43:18 -07:00 committed by Linus Torvalds
parent c8b0f4382c
commit 45e9c0de2e
2 changed files with 11 additions and 2 deletions
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10
include/asm-generic/bug.h
View File

@ -97,6 +97,16 @@ extern void warn_slowpath(const char *file, const int line,
unlikely(__ret_warn_once); \
})
#define WARN_ONCE(condition, format...) ({ \
static int __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once)) \
if (WARN(!__warned, format)) \
__warned = 1; \
unlikely(__ret_warn_once); \
})
#define WARN_ON_RATELIMIT(condition, state) \
WARN_ON((condition) && __ratelimit(state))

3
net/sched/sch_generic.c
View File

@ -215,10 +215,9 @@ static void dev_watchdog(unsigned long arg)
time_after(jiffies, (dev->trans_start +
dev->watchdog_timeo))) {
char drivername[64];
printk(KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit timed out\n",
WARN_ONCE(1, KERN_INFO "NETDEV WATCHDOG: %s (%s): transmit timed out\n",
dev->name, netdev_drivername(dev, drivername, 64));
dev->tx_timeout(dev);
WARN_ON_ONCE(1);
}
if (!mod_timer(&dev->watchdog_timer,
round_jiffies(jiffies +