/* 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 __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);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 /* * In !PRINTK builds we still export 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 */