Merge pull request #20 from tpiekarski/feature/walking-print-macro

Adding walker macro, updating demo and README, resolves #7

README.md

@@ -23,13 +23,15 @@ inside the code and on the other one it should increase readability when running
 
 pp_warn("Shortcut for severity level and flushing '\n' character");
 pp_debug("Extended metadata while printk-ing with debug=1 or PP_DEBUG");
+pp_walker();
 
 // [...]
 ```
 
 ```sh
 [ 8204.477771] pretty_printk_demo: "Shortcut for severity level and flushing '\n' character"
 [ 8204.477773] pretty_printk_demo (pretty_printk_demo_init @ pretty_printk_demo.c, 62): "Extended metadata while printk-ing with debug=1 or PP_DEBUG"
+[ 8204.477775] pretty_printk_demo (pretty_printk_demo_init @ pretty_printk_demo.c, 63): "It worked up to this line"
 ```
 
 For testing, playing and looking at the features the repository provides a demo module *pretty_printk_demo* to

pretty_printk.h

@@ -51,8 +51,10 @@
  ##args)
 
 #define pp_debug(args...) _pp_debug(args)
+#define pp_walker() _pp_debug("It worked up to this line")
 #else
 #define pp_debug(...) // no debug output
+#define pp_walker() // not walking code
 #endif
 
 #endif

pretty_printk_demo.c

@@ -60,6 +60,7 @@ static int __init pretty_printk_demo_init(void)
  // Output for README.md
  pp_warn("Shortcut for severity level and flushing '\n' character");
  pp_debug("Extended metadata while printk-ing with debug=1 or PP_DEBUG");
+ pp_walker();
 
  return 0;
 }