[U-Boot] [PATCH RESEND 1/2 v2] linux-compat: Use original kern_levels.h for kernel debug levels

[Alexey Brodkin]

Even currently in U-Boot we don't really use kernel debug levels
we do have quite a lot of code that was copy-pasted from Linux kernel
and so contains symbols like KERN_DEBUG and alike.

We used to just define those symbols which is fine if it is used in
constructions like:
----------------->8--------------
    printk(KERN_DEBUG "My debug message");
----------------->8--------------

But in other places where the symbol gets passed as a separate
argument (which we also have but luckily all of them are intself
dummy stubs in U-Boot) that won't work.

Now as a preparation to introduction of a real implementation of
print_hex_dump() we need those symbols to be defined as something real
so we're taking them as they are from Linux kernel.

Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Stefan Roese <sr at denx.de>
Cc: Tom Rini <trini at konsulko.com>
---

Changes v1 -> v2:
 * This patch was only introduced in v2.

 include/linux/compat.h      |  9 +--------
 include/linux/kern_levels.h | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 8 deletions(-)
 create mode 100644 include/linux/kern_levels.h

diff --git a/include/linux/compat.h b/include/linux/compat.h
index e561ee3..0ce7d65 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -28,14 +28,7 @@ extern struct p_current *current;
 #define printk	printf
 #define printk_once	printf
 
-#define KERN_EMERG
-#define KERN_ALERT
-#define KERN_CRIT
-#define KERN_ERR
-#define KERN_WARNING
-#define KERN_NOTICE
-#define KERN_INFO
-#define KERN_DEBUG
+#include <linux/kern_levels.h>
 
 #define GFP_ATOMIC ((gfp_t) 0)
 #define GFP_KERNEL ((gfp_t) 0)
diff --git a/include/linux/kern_levels.h b/include/linux/kern_levels.h
new file mode 100644
index 0000000..c2ce155
--- /dev/null
+++ b/include/linux/kern_levels.h
@@ -0,0 +1,38 @@
+#ifndef __KERN_LEVELS_H__
+#define __KERN_LEVELS_H__
+
+#define KERN_SOH	"\001"		/* ASCII Start Of Header */
+#define KERN_SOH_ASCII	'\001'
+
+#define KERN_EMERG	KERN_SOH "0"	/* system is unusable */
+#define KERN_ALERT	KERN_SOH "1"	/* action must be taken immediately */
+#define KERN_CRIT	KERN_SOH "2"	/* critical conditions */
+#define KERN_ERR	KERN_SOH "3"	/* error conditions */
+#define KERN_WARNING	KERN_SOH "4"	/* warning conditions */
+#define KERN_NOTICE	KERN_SOH "5"	/* normal but significant condition */
+#define KERN_INFO	KERN_SOH "6"	/* informational */
+#define KERN_DEBUG	KERN_SOH "7"	/* debug-level messages */
+
+#define KERN_DEFAULT	KERN_SOH "d"	/* the default kernel loglevel */
+
+/*
+ * Annotation for a "continued" line of log printout (only done after a
+ * line that had no enclosing \n). Only to be used by core/arch code
+ * during early bootup (a continued line is not SMP-safe otherwise).
+ */
+#define KERN_CONT	""
+
+/* integer equivalents of KERN_<LEVEL> */
+#define LOGLEVEL_SCHED		-2	/* Deferred messages from sched code
+					 * are set to this special level */
+#define LOGLEVEL_DEFAULT	-1	/* default (or last) loglevel */
+#define LOGLEVEL_EMERG		0	/* system is unusable */
+#define LOGLEVEL_ALERT		1	/* action must be taken immediately */
+#define LOGLEVEL_CRIT		2	/* critical conditions */
+#define LOGLEVEL_ERR		3	/* error conditions */
+#define LOGLEVEL_WARNING	4	/* warning conditions */
+#define LOGLEVEL_NOTICE		5	/* normal but significant condition */
+#define LOGLEVEL_INFO		6	/* informational */
+#define LOGLEVEL_DEBUG		7	/* debug-level messages */
+
+#endif
-- 
2.5.5