[PATCH 6/7] Add pr_debug_pid to kernel.h

[Jack Stone <jack@hawkeye.stone.uk.eu.org>]

This patch adds a new function to kernel.h. This function prints out the
pid of the current process and the name of the function where it was
called from followed by the debug message and a newline.

This function mimics the output of autofs4.

Signed-off-by: Jack Stone <jack@hawkeye.stone.uk.eu.org>
---
Index: linux/include/linux/kernel.h
===================================================================
--- linux.orig/include/linux/kernel.h
+++ linux/include/linux/kernel.h
@@ -228,6 +228,8 @@ extern void print_hex_dump(const char *l
 /* If you are writing a driver, please use dev_dbg instead */
 #define pr_debug(fmt,arg...) \
 	printk(KERN_DEBUG fmt,##arg)
+#define pr_debug_pid(fmt,arg...) \
+	printk(KERN_DEBUG "pid %d: %s: " fmt "\n" , current->pid ,
__FUNCTION__, ##args)
 #define pr_err(fmt,arg...) \
 	printk(KERN_ERR fmt,##arg)
 #else
@@ -236,6 +238,11 @@ static inline int __attribute__ ((format
 	return 0;
 }

+static inline int __attribute__ ((format (printf, 1, 2)))
pr_debug_pid(const char * fmt, ...)
+{
+	return 0;
+}
+
 static inline int __attribute__ ((format (printf, 1, 2))) pr_err(const
char * fmt, ...)
 {
 	return 0;