xref: /openbmc/linux/fs/btrfs/messages.h (revision 9b569ea0be6fb27a4985acc9325896a3edc95ede)

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_MESSAGES_H
#define BTRFS_MESSAGES_H

#include <linux/types.h>

struct btrfs_fs_info;
struct btrfs_trans_handle;

static inline __printf(2, 3) __cold
void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
{
}

#ifdef CONFIG_PRINTK_INDEX

#define btrfs_printk(fs_info, fmt, args...)					\
do {										\
	printk_index_subsys_emit("%sBTRFS %s (device %s): ", NULL, fmt);	\
	_btrfs_printk(fs_info, fmt, ##args);					\
} while (0)

__printf(2, 3)
__cold
void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);

#elif defined(CONFIG_PRINTK)

#define btrfs_printk(fs_info, fmt, args...)				\
	_btrfs_printk(fs_info, fmt, ##args)

__printf(2, 3)
__cold
void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);

#else

#define btrfs_printk(fs_info, fmt, args...) \
	btrfs_no_printk(fs_info, fmt, ##args)
#endif

#define btrfs_emerg(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_EMERG fmt, ##args)
#define btrfs_alert(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_ALERT fmt, ##args)
#define btrfs_crit(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_CRIT fmt, ##args)
#define btrfs_err(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_ERR fmt, ##args)
#define btrfs_warn(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_WARNING fmt, ##args)
#define btrfs_notice(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_NOTICE fmt, ##args)
#define btrfs_info(fs_info, fmt, args...) \
	btrfs_printk(fs_info, KERN_INFO fmt, ##args)

/*
 * Wrappers that use printk_in_rcu
 */
#define btrfs_emerg_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args)
#define btrfs_alert_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args)
#define btrfs_crit_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args)
#define btrfs_err_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args)
#define btrfs_warn_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args)
#define btrfs_notice_in_rcu(fs_info, fmt, args...) \
	btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args)
#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)

/*
 * Wrappers that use a ratelimited printk
 */
#define btrfs_emerg_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args)
#define btrfs_alert_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args)
#define btrfs_crit_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args)
#define btrfs_err_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args)
#define btrfs_warn_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args)
#define btrfs_notice_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args)
#define btrfs_info_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args)

#if defined(CONFIG_DYNAMIC_DEBUG)
#define btrfs_debug(fs_info, fmt, args...)				\
	_dynamic_func_call_no_desc(fmt, btrfs_printk,			\
				   fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_in_rcu(fs_info, fmt, args...)			\
	_dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu,		\
				   fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...)			\
	_dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu,		\
				   fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_rl(fs_info, fmt, args...)				\
	_dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited,	\
				   fs_info, KERN_DEBUG fmt, ##args)
#elif defined(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)
#define btrfs_debug_rl(fs_info, fmt, args...) \
	btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args)
#else
#define btrfs_debug(fs_info, fmt, args...) \
	btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_in_rcu(fs_info, fmt, args...) \
	btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \
	btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args)
#define btrfs_debug_rl(fs_info, fmt, args...) \
	btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args)
#endif

#define btrfs_printk_in_rcu(fs_info, fmt, args...)	\
do {							\
	rcu_read_lock();				\
	btrfs_printk(fs_info, fmt, ##args);		\
	rcu_read_unlock();				\
} while (0)

#define btrfs_no_printk_in_rcu(fs_info, fmt, args...)	\
do {							\
	rcu_read_lock();				\
	btrfs_no_printk(fs_info, fmt, ##args);		\
	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
void __cold btrfs_assertfail(const char *expr, const char *file, int line);

#define ASSERT(expr)						\
	(likely(expr) ? (void)0 : btrfs_assertfail(#expr, __FILE__, __LINE__))
#else
#define ASSERT(expr)	(void)(expr)
#endif

void __cold btrfs_print_v0_err(struct btrfs_fs_info *fs_info);

__printf(5, 6)
__cold
void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
		     unsigned int line, int errno, const char *fmt, ...);

const char * __attribute_const__ btrfs_decode_error(int errno);

__cold
void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
			       const char *function,
			       unsigned int line, int errno, bool first_hit);

bool __cold abort_should_print_stack(int errno);

/*
 * Call btrfs_abort_transaction as early as possible when an error condition is
 * detected, that way the exact stack trace is reported for some errors.
 */
#define btrfs_abort_transaction(trans, errno)			\
do {								\
	bool first = false;					\
	/* Report first abort since mount */			\
	if (!test_and_set_bit(BTRFS_FS_STATE_TRANS_ABORTED,	\
			      &((trans)->fs_info->fs_state))) {	\
		first = true;					\
		if (WARN(abort_should_print_stack(errno),       \
			KERN_DEBUG				\
			"BTRFS: Transaction aborted (error %d)\n",	\
			(errno))) {					\
			/* Stack trace printed. */			\
		} else {						\
			btrfs_debug((trans)->fs_info,			\
				    "Transaction aborted (error %d)", \
				  (errno));			\
		}						\
	}							\
	__btrfs_abort_transaction((trans), __func__,		\
				  __LINE__, (errno), first);	\
} while (0)

#ifdef CONFIG_PRINTK_INDEX

#define btrfs_handle_fs_error(fs_info, errno, fmt, args...)		\
do {									\
	printk_index_subsys_emit(					\
		"BTRFS: error (device %s%s) in %s:%d: errno=%d %s",	\
		KERN_CRIT, fmt);					\
	__btrfs_handle_fs_error((fs_info), __func__, __LINE__,		\
				(errno), fmt, ##args);			\
} while (0)

#else

#define btrfs_handle_fs_error(fs_info, errno, fmt, args...)		\
	__btrfs_handle_fs_error((fs_info), __func__, __LINE__,		\
				(errno), fmt, ##args)

#endif

__printf(5, 6)
__cold
void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
		   unsigned int line, int errno, const char *fmt, ...);
/*
 * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic
 * will panic().  Otherwise we BUG() here.
 */
#define btrfs_panic(fs_info, errno, fmt, args...)			\
do {									\
	__btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args);	\
	BUG();								\
} while (0)

#endif