75 строки
2.0 KiB
C
75 строки
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* internal.h - printk internal definitions
|
|
*/
|
|
#include <linux/percpu.h>
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
|
|
#define PRINTK_SAFE_CONTEXT_MASK 0x007ffffff
|
|
#define PRINTK_NMI_DIRECT_CONTEXT_MASK 0x008000000
|
|
#define PRINTK_NMI_CONTEXT_MASK 0xff0000000
|
|
|
|
#define PRINTK_NMI_CONTEXT_OFFSET 0x010000000
|
|
|
|
extern raw_spinlock_t logbuf_lock;
|
|
|
|
__printf(4, 0)
|
|
int vprintk_store(int facility, int level,
|
|
const struct dev_printk_info *dev_info,
|
|
const char *fmt, va_list args);
|
|
|
|
__printf(1, 0) int vprintk_default(const char *fmt, va_list args);
|
|
__printf(1, 0) int vprintk_deferred(const char *fmt, va_list args);
|
|
__printf(1, 0) int vprintk_func(const char *fmt, va_list args);
|
|
void __printk_safe_enter(void);
|
|
void __printk_safe_exit(void);
|
|
|
|
void printk_safe_init(void);
|
|
bool printk_percpu_data_ready(void);
|
|
|
|
#define printk_safe_enter_irqsave(flags) \
|
|
do { \
|
|
local_irq_save(flags); \
|
|
__printk_safe_enter(); \
|
|
} while (0)
|
|
|
|
#define printk_safe_exit_irqrestore(flags) \
|
|
do { \
|
|
__printk_safe_exit(); \
|
|
local_irq_restore(flags); \
|
|
} while (0)
|
|
|
|
#define printk_safe_enter_irq() \
|
|
do { \
|
|
local_irq_disable(); \
|
|
__printk_safe_enter(); \
|
|
} while (0)
|
|
|
|
#define printk_safe_exit_irq() \
|
|
do { \
|
|
__printk_safe_exit(); \
|
|
local_irq_enable(); \
|
|
} while (0)
|
|
|
|
void defer_console_output(void);
|
|
|
|
#else
|
|
|
|
__printf(1, 0) int vprintk_func(const char *fmt, va_list args) { return 0; }
|
|
|
|
/*
|
|
* In !PRINTK builds we still export logbuf_lock spin_lock, console_sem
|
|
* semaphore and some of console functions (console_unlock()/etc.), so
|
|
* printk-safe must preserve the existing local IRQ guarantees.
|
|
*/
|
|
#define printk_safe_enter_irqsave(flags) local_irq_save(flags)
|
|
#define printk_safe_exit_irqrestore(flags) local_irq_restore(flags)
|
|
|
|
#define printk_safe_enter_irq() local_irq_disable()
|
|
#define printk_safe_exit_irq() local_irq_enable()
|
|
|
|
static inline void printk_safe_init(void) { }
|
|
static inline bool printk_percpu_data_ready(void) { return false; }
|
|
#endif /* CONFIG_PRINTK */
|