From 05bb411ada9508b48044ef5d84dd8bc46cece607 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Thu, 1 Aug 2019 20:14:46 +0300 Subject: [PATCH] RDMA/core: Introduce ratelimited ibdev printk functions Add ratelimited helpers to the ibdev_* printk functions. Implementation inspired by counterpart dev_*_ratelimited functions. Signed-off-by: Gal Pressman Reviewed-by: Leon Romanovsky Link: https://lore.kernel.org/r/20190801171447.54440-2-galpress@amazon.com Signed-off-by: Doug Ledford --- include/rdma/ib_verbs.h | 42 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 2a1523ccd7ab..0ecda7d15df2 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -107,6 +107,48 @@ static inline void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {} #endif +#define ibdev_level_ratelimited(ibdev_level, ibdev, fmt, ...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + ibdev_level(ibdev, fmt, ##__VA_ARGS__); \ +} while (0) + +#define ibdev_emerg_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_emerg, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_alert_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_alert, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_crit_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_crit, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_err_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_err, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_warn_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_warn, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_notice_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_notice, ibdev, fmt, ##__VA_ARGS__) +#define ibdev_info_ratelimited(ibdev, fmt, ...) \ + ibdev_level_ratelimited(ibdev_info, ibdev, fmt, ##__VA_ARGS__) + +#if defined(CONFIG_DYNAMIC_DEBUG) +/* descriptor check is first to prevent flooding with "callbacks suppressed" */ +#define ibdev_dbg_ratelimited(ibdev, 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_ibdev_dbg(&descriptor, ibdev, fmt, \ + ##__VA_ARGS__); \ +} while (0) +#else +__printf(2, 3) __cold +static inline +void ibdev_dbg_ratelimited(const struct ib_device *ibdev, const char *format, ...) {} +#endif + union ib_gid { u8 raw[16]; struct {