1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
new file mode 100644
index 000000000..d947ca6c8
--- /dev/null
+++ b/kernel/printk/internal.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * internal.h - printk internal definitions
+ */
+#include <linux/percpu.h>
+
+#if defined(CONFIG_PRINTK) && defined(CONFIG_SYSCTL)
+void __init printk_sysctl_init(void);
+int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write,
+			      void *buffer, size_t *lenp, loff_t *ppos);
+#else
+#define printk_sysctl_init() do { } while (0)
+#endif
+
+#ifdef CONFIG_PRINTK
+
+/* Flags for a single printk record. */
+enum printk_info_flags {
+	LOG_NEWLINE	= 2,	/* text ended with a newline */
+	LOG_CONT	= 8,	/* text is a fragment of a continuation line */
+};
+
+__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);
+
+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)
+
+void defer_console_output(void);
+
+u16 printk_parse_prefix(const char *text, int *level,
+			enum printk_info_flags *flags);
+#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)
+
+static inline bool printk_percpu_data_ready(void) { return false; }
+#endif /* CONFIG_PRINTK */