x86/debug: Add KERN_<LEVEL> to bare printks, convert printks to pr_<level>

Use a more current logging style:

 - Bare printks should have a KERN_<LEVEL> for consistency's sake
 - Add pr_fmt where appropriate
 - Neaten some macro definitions
 - Convert some Ok output to OK
 - Use "%s: ", __func__ in pr_fmt for summit
 - Convert some printks to pr_<level>

Message output is not identical in all cases.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: levinsasha928@gmail.com
Link: http://lkml.kernel.org/r/1337655007.24226.10.camel@joe2Laptop
[ merged two similar patches, tidied up the changelog ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 791b761..c582e9c 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -228,20 +228,20 @@
 		if (stack >= irq_stack && stack <= irq_stack_end) {
 			if (stack == irq_stack_end) {
 				stack = (unsigned long *) (irq_stack_end[-1]);
-				printk(KERN_CONT " <EOI> ");
+				pr_cont(" <EOI> ");
 			}
 		} else {
 		if (((long) stack & (THREAD_SIZE-1)) == 0)
 			break;
 		}
 		if (i && ((i % STACKSLOTS_PER_LINE) == 0))
-			printk(KERN_CONT "\n");
-		printk(KERN_CONT " %016lx", *stack++);
+			pr_cont("\n");
+		pr_cont(" %016lx", *stack++);
 		touch_nmi_watchdog();
 	}
 	preempt_enable();
 
-	printk(KERN_CONT "\n");
+	pr_cont("\n");
 	show_trace_log_lvl(task, regs, sp, bp, log_lvl);
 }
 
@@ -256,8 +256,8 @@
 	printk("CPU %d ", cpu);
 	print_modules();
 	__show_regs(regs, 1);
-	printk("Process %s (pid: %d, threadinfo %p, task %p)\n",
-		cur->comm, cur->pid, task_thread_info(cur), cur);
+	printk(KERN_DEFAULT "Process %s (pid: %d, threadinfo %p, task %p)\n",
+	       cur->comm, cur->pid, task_thread_info(cur), cur);
 
 	/*
 	 * When in-kernel, we also print out the stack and code at the
@@ -284,16 +284,16 @@
 		for (i = 0; i < code_len; i++, ip++) {
 			if (ip < (u8 *)PAGE_OFFSET ||
 					probe_kernel_address(ip, c)) {
-				printk(KERN_CONT " Bad RIP value.");
+				pr_cont(" Bad RIP value.");
 				break;
 			}
 			if (ip == (u8 *)regs->ip)
-				printk(KERN_CONT "<%02x> ", c);
+				pr_cont("<%02x> ", c);
 			else
-				printk(KERN_CONT "%02x ", c);
+				pr_cont("%02x ", c);
 		}
 	}
-	printk(KERN_CONT "\n");
+	pr_cont("\n");
 }
 
 int is_valid_bugaddr(unsigned long ip)