Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Sterba |
176 |
30.56% |
18 |
45.00% |
| Josef Whiter |
141 |
24.48% |
4 |
10.00% |
| Qu Wenruo |
132 |
22.92% |
3 |
7.50% |
| Jeff Mahoney |
37 |
6.42% |
2 |
5.00% |
| Liu Bo |
32 |
5.56% |
1 |
2.50% |
| Joe Perches |
28 |
4.86% |
1 |
2.50% |
| Chris Mason |
11 |
1.91% |
2 |
5.00% |
| Zheng Yan |
5 |
0.87% |
1 |
2.50% |
| Naohiro Aota |
4 |
0.69% |
2 |
5.00% |
| Arnd Bergmann |
3 |
0.52% |
1 |
2.50% |
| Gladyshev Ilya |
2 |
0.35% |
1 |
2.50% |
| Anand Jain |
2 |
0.35% |
1 |
2.50% |
| Simon Kirby |
1 |
0.17% |
1 |
2.50% |
| Jonathan Lassoff |
1 |
0.17% |
1 |
2.50% |
| Eric Sandeen |
1 |
0.17% |
1 |
2.50% |
| Total |
576 |
|
40 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BTRFS_MESSAGES_H
#define BTRFS_MESSAGES_H
#include <linux/types.h>
#include <linux/printk.h>
#include <linux/bug.h>
struct btrfs_fs_info;
/*
* We want to be able to override this in btrfs-progs.
*/
#ifdef __KERNEL__
static inline __printf(2, 3) __cold
void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
{
}
#endif
#ifdef CONFIG_PRINTK
__printf(3, 4) __cold
void _btrfs_printk(const struct btrfs_fs_info *fs_info, unsigned int level, const char *fmt, ...);
#else
#define btrfs_printk_in_rcu(fs_info, level, fmt, args...) \
btrfs_no_printk(fs_info, fmt, ##args)
#define btrfs_printk_rl_in_rcu(fs_info, level, fmt, args...) \
btrfs_no_printk(fs_info, fmt, ##args)
#endif
/*
* Print a message with filesystem info, enclosed in RCU protection.
*/
#define btrfs_crit(fs_info, fmt, args...) \
btrfs_printk_in_rcu(fs_info, LOGLEVEL_CRIT, fmt, ##args)
#define btrfs_err(fs_info, fmt, args...) \
btrfs_printk_in_rcu(fs_info, LOGLEVEL_ERR, fmt, ##args)
#define btrfs_warn(fs_info, fmt, args...) \
btrfs_printk_in_rcu(fs_info, LOGLEVEL_WARNING, fmt, ##args)
#define btrfs_info(fs_info, fmt, args...) \
btrfs_printk_in_rcu(fs_info, LOGLEVEL_INFO, fmt, ##args)
/*
* Wrappers that use a ratelimited printk
*/
#define btrfs_crit_rl(fs_info, fmt, args...) \
btrfs_printk_rl_in_rcu(fs_info, LOGLEVEL_CRIT, fmt, ##args)
#define btrfs_err_rl(fs_info, fmt, args...) \
btrfs_printk_rl_in_rcu(fs_info, LOGLEVEL_ERR, fmt, ##args)
#define btrfs_warn_rl(fs_info, fmt, args...) \
btrfs_printk_rl_in_rcu(fs_info, LOGLEVEL_WARNING, fmt, ##args)
#define btrfs_info_rl(fs_info, fmt, args...) \
btrfs_printk_rl_in_rcu(fs_info, LOGLEVEL_INFO, fmt, ##args)
#if defined(CONFIG_DYNAMIC_DEBUG)
#define btrfs_debug(fs_info, fmt, args...) \
_dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \
fs_info, LOGLEVEL_DEBUG, fmt, ##args)
#define btrfs_debug_rl(fs_info, fmt, args...) \
_dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \
fs_info, LOGLEVEL_DEBUG, fmt, ##args)
#elif defined(DEBUG)
#define btrfs_debug(fs_info, fmt, args...) \
btrfs_printk_in_rcu(fs_info, LOGLEVEL_DEBUG, fmt, ##args)
#define btrfs_debug_rl(fs_info, fmt, args...) \
btrfs_printk_rl_in_rcu(fs_info, LOGLEVEl_DEBUG, fmt, ##args)
#else
/* When printk() is no_printk(), expand to no-op. */
#define btrfs_debug(fs_info, fmt, args...) do { (void)(fs_info); } while(0)
#define btrfs_debug_rl(fs_info, fmt, args...) do { (void)(fs_info); } while(0)
#endif
#ifdef CONFIG_PRINTK
#define btrfs_printk_in_rcu(fs_info, level, fmt, args...) \
do { \
rcu_read_lock(); \
_btrfs_printk(fs_info, level, fmt, ##args); \
rcu_read_unlock(); \
} while (0)
#define btrfs_printk_rl_in_rcu(fs_info, level, fmt, args...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
\
rcu_read_lock(); \
if (__ratelimit(&_rs)) \
_btrfs_printk(fs_info, level, fmt, ##args); \
rcu_read_unlock(); \
} while (0)
#endif
#ifdef CONFIG_BTRFS_ASSERT
__printf(1, 2)
static inline void verify_assert_printk_format(const char *fmt, ...) {
/* Stub to verify the assertion format string. */
}
/* Take the first token if any. */
#define __FIRST_ARG(_, ...) _
/*
* Skip the first token and return the rest, if it's empty the comma is dropped.
* As ##__VA_ARGS__ cannot be at the beginning of the macro the __VA_OPT__ is needed
* and supported since GCC 8 and Clang 12.
*/
#define __REST_ARGS(_, ... ) __VA_OPT__(,) __VA_ARGS__
/*
* Assertion with optional printk() format.
*
* Accepted syntax:
* ASSERT(condition);
* ASSERT(condition, "string");
* ASSERT(condition, "variable=%d", variable);
*
* How it works:
* - if there's no format string, ""[0] evaluates at compile time to 0 and the
* true branch is executed
* - any non-empty format string with the "" prefix evaluates to != 0 at
* compile time and the false branch is executed
* - stringified condition is printed as %s so we don't accidentally mix format
* strings (the % operator)
* - there can be only one printk() call, so the format strings and arguments are
* spliced together:
* DEFAULT_FMT [USER_FMT], DEFAULT_ARGS [, USER_ARGS]
* - comma between DEFAULT_ARGS and USER_ARGS is handled by preprocessor
* (requires __VA_OPT__ support)
* - otherwise we could use __VA_OPT(,) __VA_ARGS__ for the 2nd+ argument of args,
*/
#define ASSERT(cond, args...) \
do { \
verify_assert_printk_format("check the format string" args); \
if (!likely(cond)) { \
if (("" __FIRST_ARG(args) [0]) == 0) { \
pr_err("assertion failed: %s :: %ld, in %s:%d\n", \
#cond, (long)(cond), __FILE__, __LINE__); \
} else { \
pr_err("assertion failed: %s :: %ld, in %s:%d (" __FIRST_ARG(args) ")\n", \
#cond, (long)(cond), __FILE__, __LINE__ __REST_ARGS(args)); \
} \
BUG(); \
} \
} while(0)
#else
/* Compile check the @cond expression but don't generate any code. */
#define ASSERT(cond, args...) BUILD_BUG_ON_INVALID(cond)
#endif
#ifdef CONFIG_BTRFS_DEBUG
/* Verbose warning only under debug build. */
#define DEBUG_WARN(args...) WARN(1, KERN_ERR args)
#else
#define DEBUG_WARN(...) do {} while(0)
#endif
__printf(5, 6)
__cold
void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
unsigned int line, int error, const char *fmt, ...);
const char * __attribute_const__ btrfs_decode_error(int error);
#define btrfs_handle_fs_error(fs_info, error, fmt, args...) \
__btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
(error), fmt, ##args)
__printf(5, 6)
__cold
void __btrfs_panic(const struct btrfs_fs_info *fs_info, const char *function,
unsigned int line, int error, 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, error, fmt, args...) \
do { \
__btrfs_panic(fs_info, __func__, __LINE__, error, fmt, ##args); \
BUG(); \
} while (0)
#if BITS_PER_LONG == 32
#define BTRFS_32BIT_MAX_FILE_SIZE (((u64)ULONG_MAX + 1) << PAGE_SHIFT)
/*
* The warning threshold is 5/8th of the MAX_LFS_FILESIZE that limits the logical
* addresses of extents.
*
* For 4K page size it's about 10T, for 64K it's 160T.
*/
#define BTRFS_32BIT_EARLY_WARN_THRESHOLD (BTRFS_32BIT_MAX_FILE_SIZE * 5 / 8)
void btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info);
void btrfs_err_32bit_limit(struct btrfs_fs_info *fs_info);
#endif
#endif