[PATCHv2 net 1/2] netdevice.h: add netdev_level_ratelimited for netdevice
From: Hangbin Liu <hidden>
Date: 2019-08-09 00:30:02
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add netdev_level_ratelimited so we can use it in the future. The code is copied from device.h. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Hangbin Liu <redacted> --- include/linux/netdevice.h | 53 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 88292953aa6f..4e37065c6717 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h@@ -4737,6 +4737,59 @@ do { \ #define netdev_info_once(dev, fmt, ...) \ netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__) +#define netdev_level_ratelimited(netdev_level, dev, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + netdev_level(dev, fmt, ##__VA_ARGS__); \ +} while (0) + +#define netdev_emerg_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_emerg, dev, fmt, ##__VA_ARGS__) +#define netdev_alert_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_alert, dev, fmt, ##__VA_ARGS__) +#define netdev_crit_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_crit, dev, fmt, ##__VA_ARGS__) +#define netdev_err_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_err, dev, fmt, ##__VA_ARGS__) +#define netdev_warn_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_warn, dev, fmt, ##__VA_ARGS__) +#define netdev_notice_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_notice, dev, fmt, ##__VA_ARGS__) +#define netdev_info_ratelimited(dev, fmt, ...) \ + netdev_level_ratelimited(netdev_info, dev, fmt, ##__VA_ARGS__) +#if defined(CONFIG_DYNAMIC_DEBUG) +/* descriptor check is first to prevent flooding with "callbacks suppressed" */ +#define netdev_dbg_ratelimited(dev, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (DYNAMIC_DEBUG_BRANCH(descriptor) && \ + __ratelimit(&_rs)) \ + __dynamic_netdev_dbg(&descriptor, dev, dev_fmt(fmt), \ + ##__VA_ARGS__); \ +} while (0) +#elif defined(DEBUG) +#define netdev_dbg_ratelimited(dev, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + netdev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \ +} while (0) +#else +#define netdev_dbg_ratelimited(dev, fmt, ...) \ +do { \ + if (0) \ + netdev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \ +} while (0) +#endif + #define MODULE_ALIAS_NETDEV(device) \ MODULE_ALIAS("netdev-" device)
--
2.19.2