From 3d6e036193bfa67a8a1cc1908fe910c7a014d183 Mon Sep 17 00:00:00 2001 From: Rich Johnston Date: Wed, 27 Mar 2013 09:26:49 -0500 Subject: [PATCH] xfs: Add ratelimited printk for different alert levels Ratelimited printk will be useful in printing xfs messages which are otherwise not required to be printed always due to their high rate (to prevent kernel ring buffer from overflowing), while at the same time required to be printed. Signed-off-by: Raghavendra D Prabhu Reviewed-by: Rich Johnston Reviewed-by: Dave Chinner Signed-off-by: Ben Myers --- fs/xfs/xfs_linux.h | 1 + fs/xfs/xfs_message.h | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index fe7e4df85a7b..14e59d953b7b 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -72,6 +72,7 @@ #include #include #include +#include #include #include diff --git a/fs/xfs/xfs_message.h b/fs/xfs/xfs_message.h index 56dc0c17f16a..76c81982f964 100644 --- a/fs/xfs/xfs_message.h +++ b/fs/xfs/xfs_message.h @@ -30,6 +30,32 @@ void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) } #endif +#define xfs_printk_ratelimited(func, dev, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + func(dev, fmt, ##__VA_ARGS__); \ +} while (0) + +#define xfs_emerg_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__) +#define xfs_alert_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_alert, dev, fmt, ##__VA_ARGS__) +#define xfs_crit_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_crit, dev, fmt, ##__VA_ARGS__) +#define xfs_err_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_err, dev, fmt, ##__VA_ARGS__) +#define xfs_warn_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_warn, dev, fmt, ##__VA_ARGS__) +#define xfs_notice_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_notice, dev, fmt, ##__VA_ARGS__) +#define xfs_info_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_info, dev, fmt, ##__VA_ARGS__) +#define xfs_debug_ratelimited(dev, fmt, ...) \ + xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__) + extern void assfail(char *expr, char *f, int l); extern void xfs_hex_dump(void *p, int length); -- 2.20.1