btrfs: introduce ratelimited _in_rcu variants of message printing functions (24aa6b41) · Commits · e / devices / android_kernel_teracube_emerald

fs/btrfs/ctree.h

+38 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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...) \		#define btrfs_info_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_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		#ifdef DEBUG
	#define btrfs_debug(fs_info, fmt, args...) \		#define btrfs_debug(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)		btrfs_printk(fs_info, KERN_DEBUG fmt, ##args)
	#define btrfs_debug_in_rcu(fs_info, fmt, args...) \		#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_DEBUG 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		#else
	#define btrfs_debug(fs_info, fmt, args...) \		#define btrfs_debug(fs_info, fmt, args...) \
	no_printk(KERN_DEBUG fmt, ##args)		no_printk(KERN_DEBUG fmt, ##args)
	#define btrfs_debug_in_rcu(fs_info, fmt, args...) \		#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
	no_printk(KERN_DEBUG 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		#endif

	#define btrfs_printk_in_rcu(fs_info, fmt, args...) \		#define btrfs_printk_in_rcu(fs_info, fmt, args...) \
	@@ -4076,6 +4098,22 @@ do { \
	rcu_read_unlock(); \		rcu_read_unlock(); \
	} while (0)		} 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		#ifdef CONFIG_BTRFS_ASSERT

	__cold		__cold