From 45e9c0de2e86485f8b6633fd64ab19cfbff167f6 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Mon, 15 Sep 2008 16:43:18 -0700 Subject: [PATCH] warn: Turn the netdev timeout WARN_ON() into a WARN() 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 Signed-off-by: Linus Torvalds --- include/asm-generic/bug.h | 10 ++++++++++ net/sched/sch_generic.c | 3 +-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index a3f738cffdb6..edc6ba82e090 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -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)) diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 9634091ee2f0..ec0a0839ce51 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -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 +