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| author | David Sterba <dsterba@suse.com> | 2015-10-08 10:27:02 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2015-10-08 11:07:55 +0200 |
| commit | 24aa6b41d4611b14ad0fb89fa0b899ae9ab7005c (patch) | |
| tree | c8a1567cdadf8f8d5c59a63e1ec7cab1ee831884 /fs | |
| parent | ecaeb14b912a3be55530aeec4e81c7243f5ceb5d (diff) | |
| download | linux-24aa6b41d4611b14ad0fb89fa0b899ae9ab7005c.tar.bz2 | |
btrfs: introduce ratelimited _in_rcu variants of message printing functions
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ctree.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 88acdffbe384..9c0fd901edbe 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -4057,16 +4057,38 @@ void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) #define btrfs_info_in_rcu(fs_info, fmt, args...) \ btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) +/* + * Wrappers that use a ratelimited printk_in_rcu + */ +#define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) +#define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) +#define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) +#define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) +#define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) +#define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) +#define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) + #ifdef DEBUG #define btrfs_debug(fs_info, fmt, args...) \ btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) +#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ + btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) #else #define btrfs_debug(fs_info, fmt, args...) \ no_printk(KERN_DEBUG fmt, ##args) #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ no_printk(KERN_DEBUG fmt, ##args) +#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ + no_printk(KERN_DEBUG fmt, ##args) #endif #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ @@ -4076,6 +4098,22 @@ do { \ rcu_read_unlock(); \ } while (0) +#define btrfs_printk_ratelimited(fs_info, fmt, args...) \ +do { \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + if (__ratelimit(&_rs)) \ + btrfs_printk(fs_info, fmt, ##args); \ +} while (0) + +#define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ +do { \ + rcu_read_lock(); \ + btrfs_printk_ratelimited(fs_info, fmt, ##args); \ + rcu_read_unlock(); \ +} while (0) + #ifdef CONFIG_BTRFS_ASSERT __cold |