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60 lines
1.7 KiB
60 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* internal.h - printk internal definitions |
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*/ |
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#include <linux/percpu.h> |
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#if defined(CONFIG_PRINTK) && defined(CONFIG_SYSCTL) |
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void __init printk_sysctl_init(void); |
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int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, |
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void *buffer, size_t *lenp, loff_t *ppos); |
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#else |
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#define printk_sysctl_init() do { } while (0) |
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#endif |
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#ifdef CONFIG_PRINTK |
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/* Flags for a single printk record. */ |
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enum printk_info_flags { |
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LOG_NEWLINE = 2, /* text ended with a newline */ |
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LOG_CONT = 8, /* text is a fragment of a continuation line */ |
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}; |
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__printf(4, 0) |
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int vprintk_store(int facility, int level, |
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const struct dev_printk_info *dev_info, |
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const char *fmt, va_list args); |
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__printf(1, 0) int vprintk_default(const char *fmt, va_list args); |
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__printf(1, 0) int vprintk_deferred(const char *fmt, va_list args); |
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bool printk_percpu_data_ready(void); |
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#define printk_safe_enter_irqsave(flags) \ |
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do { \ |
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local_irq_save(flags); \ |
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__printk_safe_enter(); \ |
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} while (0) |
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#define printk_safe_exit_irqrestore(flags) \ |
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do { \ |
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__printk_safe_exit(); \ |
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local_irq_restore(flags); \ |
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} while (0) |
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void defer_console_output(void); |
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u16 printk_parse_prefix(const char *text, int *level, |
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enum printk_info_flags *flags); |
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#else |
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/* |
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* In !PRINTK builds we still export console_sem |
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* semaphore and some of console functions (console_unlock()/etc.), so |
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* printk-safe must preserve the existing local IRQ guarantees. |
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*/ |
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#define printk_safe_enter_irqsave(flags) local_irq_save(flags) |
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#define printk_safe_exit_irqrestore(flags) local_irq_restore(flags) |
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static inline bool printk_percpu_data_ready(void) { return false; } |
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#endif /* CONFIG_PRINTK */
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