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 #include <linux/printk.h> 8 #include <linux/bug.h> 9 10 struct btrfs_fs_info; 11 12 /* 13 * We want to be able to override this in btrfs-progs. 14 */ 15 #ifdef __KERNEL__ 16 17 static inline __printf(2, 3) __cold 18 void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) 19 { 20 } 21 22 #endif 23 24 #ifdef CONFIG_PRINTK 25 26 #define btrfs_printk(fs_info, fmt, args...) \ 27 _btrfs_printk(fs_info, fmt, ##args) 28 29 __printf(2, 3) 30 __cold 31 void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); 32 33 #else 34 35 #define btrfs_printk(fs_info, fmt, args...) \ 36 btrfs_no_printk(fs_info, fmt, ##args) 37 #endif 38 39 #define btrfs_emerg(fs_info, fmt, args...) \ 40 btrfs_printk(fs_info, KERN_EMERG fmt, ##args) 41 #define btrfs_alert(fs_info, fmt, args...) \ 42 btrfs_printk(fs_info, KERN_ALERT fmt, ##args) 43 #define btrfs_crit(fs_info, fmt, args...) \ 44 btrfs_printk(fs_info, KERN_CRIT fmt, ##args) 45 #define btrfs_err(fs_info, fmt, args...) \ 46 btrfs_printk(fs_info, KERN_ERR fmt, ##args) 47 #define btrfs_warn(fs_info, fmt, args...) \ 48 btrfs_printk(fs_info, KERN_WARNING fmt, ##args) 49 #define btrfs_notice(fs_info, fmt, args...) \ 50 btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) 51 #define btrfs_info(fs_info, fmt, args...) \ 52 btrfs_printk(fs_info, KERN_INFO fmt, ##args) 53 54 /* 55 * Wrappers that use printk_in_rcu 56 */ 57 #define btrfs_emerg_in_rcu(fs_info, fmt, args...) \ 58 btrfs_printk_in_rcu(fs_info, KERN_EMERG fmt, ##args) 59 #define btrfs_alert_in_rcu(fs_info, fmt, args...) \ 60 btrfs_printk_in_rcu(fs_info, KERN_ALERT fmt, ##args) 61 #define btrfs_crit_in_rcu(fs_info, fmt, args...) \ 62 btrfs_printk_in_rcu(fs_info, KERN_CRIT fmt, ##args) 63 #define btrfs_err_in_rcu(fs_info, fmt, args...) \ 64 btrfs_printk_in_rcu(fs_info, KERN_ERR fmt, ##args) 65 #define btrfs_warn_in_rcu(fs_info, fmt, args...) \ 66 btrfs_printk_in_rcu(fs_info, KERN_WARNING fmt, ##args) 67 #define btrfs_notice_in_rcu(fs_info, fmt, args...) \ 68 btrfs_printk_in_rcu(fs_info, KERN_NOTICE fmt, ##args) 69 #define btrfs_info_in_rcu(fs_info, fmt, args...) \ 70 btrfs_printk_in_rcu(fs_info, KERN_INFO fmt, ##args) 71 72 /* 73 * Wrappers that use a ratelimited printk_in_rcu 74 */ 75 #define btrfs_emerg_rl_in_rcu(fs_info, fmt, args...) \ 76 btrfs_printk_rl_in_rcu(fs_info, KERN_EMERG fmt, ##args) 77 #define btrfs_alert_rl_in_rcu(fs_info, fmt, args...) \ 78 btrfs_printk_rl_in_rcu(fs_info, KERN_ALERT fmt, ##args) 79 #define btrfs_crit_rl_in_rcu(fs_info, fmt, args...) \ 80 btrfs_printk_rl_in_rcu(fs_info, KERN_CRIT fmt, ##args) 81 #define btrfs_err_rl_in_rcu(fs_info, fmt, args...) \ 82 btrfs_printk_rl_in_rcu(fs_info, KERN_ERR fmt, ##args) 83 #define btrfs_warn_rl_in_rcu(fs_info, fmt, args...) \ 84 btrfs_printk_rl_in_rcu(fs_info, KERN_WARNING fmt, ##args) 85 #define btrfs_notice_rl_in_rcu(fs_info, fmt, args...) \ 86 btrfs_printk_rl_in_rcu(fs_info, KERN_NOTICE fmt, ##args) 87 #define btrfs_info_rl_in_rcu(fs_info, fmt, args...) \ 88 btrfs_printk_rl_in_rcu(fs_info, KERN_INFO fmt, ##args) 89 90 /* 91 * Wrappers that use a ratelimited printk 92 */ 93 #define btrfs_emerg_rl(fs_info, fmt, args...) \ 94 btrfs_printk_ratelimited(fs_info, KERN_EMERG fmt, ##args) 95 #define btrfs_alert_rl(fs_info, fmt, args...) \ 96 btrfs_printk_ratelimited(fs_info, KERN_ALERT fmt, ##args) 97 #define btrfs_crit_rl(fs_info, fmt, args...) \ 98 btrfs_printk_ratelimited(fs_info, KERN_CRIT fmt, ##args) 99 #define btrfs_err_rl(fs_info, fmt, args...) \ 100 btrfs_printk_ratelimited(fs_info, KERN_ERR fmt, ##args) 101 #define btrfs_warn_rl(fs_info, fmt, args...) \ 102 btrfs_printk_ratelimited(fs_info, KERN_WARNING fmt, ##args) 103 #define btrfs_notice_rl(fs_info, fmt, args...) \ 104 btrfs_printk_ratelimited(fs_info, KERN_NOTICE fmt, ##args) 105 #define btrfs_info_rl(fs_info, fmt, args...) \ 106 btrfs_printk_ratelimited(fs_info, KERN_INFO fmt, ##args) 107 108 #if defined(CONFIG_DYNAMIC_DEBUG) 109 #define btrfs_debug(fs_info, fmt, args...) \ 110 _dynamic_func_call_no_desc(fmt, btrfs_printk, \ 111 fs_info, KERN_DEBUG fmt, ##args) 112 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 113 _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \ 114 fs_info, KERN_DEBUG fmt, ##args) 115 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 116 _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \ 117 fs_info, KERN_DEBUG fmt, ##args) 118 #define btrfs_debug_rl(fs_info, fmt, args...) \ 119 _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \ 120 fs_info, KERN_DEBUG fmt, ##args) 121 #elif defined(DEBUG) 122 #define btrfs_debug(fs_info, fmt, args...) \ 123 btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) 124 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 125 btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 126 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 127 btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 128 #define btrfs_debug_rl(fs_info, fmt, args...) \ 129 btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, ##args) 130 #else 131 #define btrfs_debug(fs_info, fmt, args...) \ 132 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) 133 #define btrfs_debug_in_rcu(fs_info, fmt, args...) \ 134 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 135 #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ 136 btrfs_no_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args) 137 #define btrfs_debug_rl(fs_info, fmt, args...) \ 138 btrfs_no_printk(fs_info, KERN_DEBUG fmt, ##args) 139 #endif 140 141 #define btrfs_printk_in_rcu(fs_info, fmt, args...) \ 142 do { \ 143 rcu_read_lock(); \ 144 btrfs_printk(fs_info, fmt, ##args); \ 145 rcu_read_unlock(); \ 146 } while (0) 147 148 #define btrfs_no_printk_in_rcu(fs_info, fmt, args...) \ 149 do { \ 150 rcu_read_lock(); \ 151 btrfs_no_printk(fs_info, fmt, ##args); \ 152 rcu_read_unlock(); \ 153 } while (0) 154 155 #define btrfs_printk_ratelimited(fs_info, fmt, args...) \ 156 do { \ 157 static DEFINE_RATELIMIT_STATE(_rs, \ 158 DEFAULT_RATELIMIT_INTERVAL, \ 159 DEFAULT_RATELIMIT_BURST); \ 160 if (__ratelimit(&_rs)) \ 161 btrfs_printk(fs_info, fmt, ##args); \ 162 } while (0) 163 164 #define btrfs_printk_rl_in_rcu(fs_info, fmt, args...) \ 165 do { \ 166 rcu_read_lock(); \ 167 btrfs_printk_ratelimited(fs_info, fmt, ##args); \ 168 rcu_read_unlock(); \ 169 } while (0) 170 171 #ifdef CONFIG_BTRFS_ASSERT 172 173 #define btrfs_assertfail(expr, file, line) ({ \ 174 pr_err("assertion failed: %s, in %s:%d\n", (expr), (file), (line)); \ 175 BUG(); \ 176 }) 177 178 #define ASSERT(expr) \ 179 (likely(expr) ? (void)0 : btrfs_assertfail(#expr, __FILE__, __LINE__)) 180 #else 181 #define ASSERT(expr) (void)(expr) 182 #endif 183 184 void __cold btrfs_print_v0_err(struct btrfs_fs_info *fs_info); 185 186 __printf(5, 6) 187 __cold 188 void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, 189 unsigned int line, int errno, const char *fmt, ...); 190 191 const char * __attribute_const__ btrfs_decode_error(int errno); 192 193 #define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \ 194 __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \ 195 (errno), fmt, ##args) 196 197 __printf(5, 6) 198 __cold 199 void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, 200 unsigned int line, int errno, const char *fmt, ...); 201 /* 202 * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic 203 * will panic(). Otherwise we BUG() here. 204 */ 205 #define btrfs_panic(fs_info, errno, fmt, args...) \ 206 do { \ 207 __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ 208 BUG(); \ 209 } while (0) 210 211 #if BITS_PER_LONG == 32 212 #define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT) 213 /* 214 * The warning threshold is 5/8th of the MAX_LFS_FILESIZE that limits the logical 215 * addresses of extents. 216 * 217 * For 4K page size it's about 10T, for 64K it's 160T. 218 */ 219 #define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8) 220 void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info); 221 void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info); 222 #endif 223 224 #endif 225