1 files changed, 79 insertions, 0 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h
new file mode 100644
index 0000000000..088513ad29
--- /dev/null
+++ b/include/linux/printk.h
@@ -0,0 +1,79 @@
+#ifndef __KERNEL_PRINTK__
+#define __KERNEL_PRINTK__
+
+#include <stdio.h>
+#include <linux/compiler.h>
+
+#define KERN_EMERG
+#define KERN_ALERT
+#define KERN_CRIT
+#define KERN_ERR
+#define KERN_WARNING
+#define KERN_NOTICE
+#define KERN_INFO
+#define KERN_DEBUG
+#define KERN_CONT
+
+#define printk(fmt, ...) \
+	printf(fmt, ##__VA_ARGS__)
+
+/*
+ * Dummy printk for disabled debugging statements to use whilst maintaining
+ * gcc's format checking.
+ */
+#define no_printk(fmt, ...)				\
+({							\
+	if (0)						\
+		printk(fmt, ##__VA_ARGS__);		\
+	0;						\
+})
+
+#define __printk(level, fmt, ...)					\
+({									\
+	level < CONFIG_LOGLEVEL ? printk(fmt, ##__VA_ARGS__) : 0;	\
+})
+
+#ifndef pr_fmt
+#define pr_fmt(fmt) fmt
+#endif
+
+#define pr_emerg(fmt, ...) \
+	__printk(0, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_alert(fmt, ...) \
+	__printk(1, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_crit(fmt, ...) \
+	__printk(2, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_err(fmt, ...) \
+	__printk(3, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warning(fmt, ...) \
+	__printk(4, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_warn pr_warning
+#define pr_notice(fmt, ...) \
+	__printk(5, pr_fmt(fmt), ##__VA_ARGS__)
+#define pr_info(fmt, ...) \
+	__printk(6, pr_fmt(fmt), ##__VA_ARGS__)
+
+#define pr_cont(fmt, ...) \
+	printk(fmt, ##__VA_ARGS__)
+
+/* pr_devel() should produce zero code unless DEBUG is defined */
+#ifdef DEBUG
+#define pr_devel(fmt, ...) \
+	__printk(7, pr_fmt(fmt), ##__VA_ARGS__)
+#else
+#define pr_devel(fmt, ...) \
+	no_printk(pr_fmt(fmt), ##__VA_ARGS__)
+#endif
+
+#ifdef DEBUG
+#define pr_debug(fmt, ...) \
+	__printk(7, pr_fmt(fmt), ##__VA_ARGS__)
+#else
+#define pr_debug(fmt, ...) \
+	no_printk(pr_fmt(fmt), ##__VA_ARGS__)
+#endif
+
+#define printk_once(fmt, ...) \
+	printk(fmt, ##__VA_ARGS__)
+
+#endif