1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef BTRFS_MESSAGES_H 4 #define BTRFS_MESSAGES_H 5 6 #include <linux/types.h> 7 8 struct btrfs_fs_info; 9 10 /* 11 * We want to be able to override this in btrfs-progs. 12 */ 13 #ifdef __KERNEL__ 14 15 static inline __printf(2, 3) __cold 16 void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) 17 { 18 } 19 20 #endif 21 22 #ifdef CONFIG_PRINTK 23 24 #define btrfs_printk(fs_info, fmt, args...) \ 25 _btrfs_printk(fs_info, fmt, ##args) 26 27 __printf(2, 3) 28 __cold 29 void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); 30 31 #else 32 33 #define btrfs_printk(fs_info, fmt, args...) \ 34 btrfs_no_printk(fs_info, fmt, ##args) 35 #endif 36 37 #define btrfs_emerg(fs_info, fmt, args...) \ 38 btrfs_printk(fs_info, KERN_EMERG fmt, ##args) 39 #define btrfs_alert(fs_info, fmt, args...) \ 40 btrfs_printk(fs_info, KERN_ALERT fmt, ##args) 41 #define btrfs_crit(fs_info, fmt, args...) \ 42 btrfs_printk(fs_info, KERN_CRIT fmt, ##args) 43 #define btrfs_err(fs_info, fmt, args...) \ 44 btrfs_printk(fs_info, KERN_ERR fmt, ##args) 45 #define btrfs_warn(fs_info, fmt, args...) \ 46 btrfs_printk(fs_info, KERN_WARNING fmt, ##args) 47 #define btrfs_notice(fs_info, fmt, args...) \ 48 btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) 49 #define btrfs_info(fs_info, fmt, args...) \ 50 btrfs_printk(fs_info, KERN_INFO fmt, ##args) 51 52 /* 53 * Wrappers that use printk_in_rcu 54 */ 55 #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ 56 btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) 57 #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ 58 btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) 59 #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ 60 btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) 61 #define btrfs_err_in_rcu(fs_info, fmt, args...) \ 62 btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) 63 #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ 64 btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) 65 #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ 66 btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) 67 #define btrfs_info_in_rcu(fs_info, fmt, args...) \ 68 btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) 69 70 /* 71 * Wrappers that use a ratelimited printk_in_rcu 72 */ 73 #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ 74 btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) 75 #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ 76 btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) 77 #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ 78 btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) 79 #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ 80 btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) 81 #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ 82 btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) 83 #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ 84 btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) 85 #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ 86 btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) 87 88 /* 89 * Wrappers that use a ratelimited printk 90 */ 91 #define btrfs_emerg_rl(fs_info, fmt, args...) \ 92 btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) 93 #define btrfs_alert_rl(fs_info, fmt, args...) \ 94 btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) 95 #define btrfs_crit_rl(fs_info, fmt, args...) \ 96 btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) 97 #define btrfs_err_rl(fs_info, fmt, args...) \ 98 btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) 99 #define btrfs_warn_rl(fs_info, fmt, args...) \ 100 btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) 101 #define btrfs_notice_rl(fs_info, fmt, args...) \ 102 btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) 103 #define btrfs_info_rl(fs_info, fmt, args...) \ 104 btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) 105 106 #if defined(CONFIG_DYNAMIC_DEBUG) 107 #define btrfs_debug(fs_info, fmt, args...) \ 108 _dynamic_func_call_no_desc(fmt, btrfs_printk, \ 109 fs_info, KERN_DEBUG fmt, ##args) 110 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 111 _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \ 112 fs_info, KERN_DEBUG fmt, ##args) 113 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 114 _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \ 115 fs_info, KERN_DEBUG fmt, ##args) 116 #define btrfs_debug_rl(fs_info, fmt, args...) \ 117 _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \ 118 fs_info, KERN_DEBUG fmt, ##args) 119 #elif defined(DEBUG) 120 #define btrfs_debug(fs_info, fmt, args...) \ 121 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) 122 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 123 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 124 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 125 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 126 #define btrfs_debug_rl(fs_info, fmt, args...) \ 127 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) 128 #else 129 #define btrfs_debug(fs_info, fmt, args...) \ 130 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) 131 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 132 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 133 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 134 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 135 #define btrfs_debug_rl(fs_info, fmt, args...) \ 136 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) 137 #endif 138 139 #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ 140 do { \ 141 rcu_read_lock(); \ 142 btrfs_printk(fs_info, fmt, ##args); \ 143 rcu_read_unlock(); \ 144 } while (0) 145 146 #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ 147 do { \ 148 rcu_read_lock(); \ 149 btrfs_no_printk(fs_info, fmt, ##args); \ 150 rcu_read_unlock(); \ 151 } while (0) 152 153 #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ 154 do { \ 155 static DEFINE_RATELIMIT_STATE(_rs, \ 156 DEFAULT_RATELIMIT_INTERVAL, \ 157 DEFAULT_RATELIMIT_BURST); \ 158 if (__ratelimit(&_rs)) \ 159 btrfs_printk(fs_info, fmt, ##args); \ 160 } while (0) 161 162 #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ 163 do { \ 164 rcu_read_lock(); \ 165 btrfs_printk_ratelimited(fs_info, fmt, ##args); \ 166 rcu_read_unlock(); \ 167 } while (0) 168 169 #ifdef CONFIG_BTRFS_ASSERT 170 void __cold __noreturn btrfs_assertfail(const char *expr, const char *file, int line); 171 172 #define ASSERT(expr) \ 173 (likely(expr) ? (void)0 : btrfs_assertfail(#expr, __FILE__, __LINE__)) 174 #else 175 #define ASSERT(expr) (void)(expr) 176 #endif 177 178 void __cold btrfs_print_v0_err(struct btrfs_fs_info *fs_info); 179 180 __printf(5, 6) 181 __cold 182 void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, 183 unsigned int line, int errno, const char *fmt, ...); 184 185 const char * __attribute_const__ btrfs_decode_error(int errno); 186 187 #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ 188 __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ 189 (errno), fmt, ##args) 190 191 __printf(5, 6) 192 __cold 193 void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, 194 unsigned int line, int errno, const char *fmt, ...); 195 /* 196 * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic 197 * will panic(). Otherwise we BUG() here. 198 */ 199 #define btrfs_panic(fs_info, errno, fmt, args...) \ 200 do { \ 201 __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ 202 BUG(); \ 203 } while (0) 204 205 #if BITS_PER_LONG == 32 206 #define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT) 207 /* 208 * The warning threshold is 5/8th of the MAX_LFS_FILESIZE that limits the logical 209 * addresses of extents. 210 * 211 * For 4K page size it's about 10T, for 64K it's 160T. 212 */ 213 #define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8) 214 void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info); 215 void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info); 216 #endif 217 218 #endif 219