cpu-load: standardize document format

Each text file under Documentation follows a different
format. Some doesn't even have titles!

Change its representation to follow the adopted standard,
using ReST markups for it to be parseable by Sphinx:

- mark literals;
- Adjust document title;
- Use a list for references.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/cpu-load.txt

+========
 CPU load
---------
+========
 
-Linux exports various bits of information via `/proc/stat' and
-`/proc/uptime' that userland tools, such as top(1), use to calculate
-the average time system spent in a particular state, for example:
+Linux exports various bits of information via ``/proc/stat`` and
+``/proc/uptime`` that userland tools, such as top(1), use to calculate
+the average time system spent in a particular state, for example::
 
     $ iostat
     Linux 2.6.18.3-exp (linmac)     02/20/2007
@@ -17,7 +18,7 @@ Here the system thinks that over the default sampling period the
 system spent 10.01% of the time doing work in user space, 2.92% in the
 kernel, and was overall 81.63% of the time idle.
 
-In most cases the `/proc/stat' information reflects the reality quite
+In most cases the ``/proc/stat``	 information reflects the reality quite
 closely, however due to the nature of how/when the kernel collects
 this data sometimes it can not be trusted at all.
 
@@ -33,46 +34,46 @@ Example
 -------
 
 If we imagine the system with one task that periodically burns cycles
-in the following manner:
+in the following manner::
 
      time line between two timer interrupts
-|--------------------------------------|
+    |--------------------------------------|
      ^                                    ^
      |_ something begins working          |
                                           |_ something goes to sleep
                                          (only to be awaken quite soon)
 
 In the above situation the system will be 0% loaded according to the
-`/proc/stat' (since the timer interrupt will always happen when the
+``/proc/stat`` (since the timer interrupt will always happen when the
 system is executing the idle handler), but in reality the load is
 closer to 99%.
 
 One can imagine many more situations where this behavior of the kernel
-will lead to quite erratic information inside `/proc/stat'.
+will lead to quite erratic information inside ``/proc/stat``::
 
 
-/* gcc -o hog smallhog.c */
-#include <time.h>
-#include <limits.h>
-#include <signal.h>
-#include <sys/time.h>
-#define HIST 10
+	/* gcc -o hog smallhog.c */
+	#include <time.h>
+	#include <limits.h>
+	#include <signal.h>
+	#include <sys/time.h>
+	#define HIST 10
 
-static volatile sig_atomic_t stop;
+	static volatile sig_atomic_t stop;
 
-static void sighandler (int signr)
-{
+	static void sighandler (int signr)
+	{
 	(void) signr;
 	stop = 1;
-}
-static unsigned long hog (unsigned long niters)
-{
+	}
+	static unsigned long hog (unsigned long niters)
+	{
 	stop = 0;
 	while (!stop && --niters);
 	return niters;
-}
-int main (void)
-{
+	}
+	int main (void)
+	{
 	int i;
 	struct itimerval it = { .it_interval = { .tv_sec = 0, .tv_usec = 1 },
 				.it_value = { .tv_sec = 0, .tv_usec = 1 } };
@@ -97,14 +98,14 @@ int main (void)
 		sigwait (&set, &i);
 	}
 	return 0;
-}
+	}
 
 
 References
 ----------
 
-http://lkml.org/lkml/2007/2/12/6
-Documentation/filesystems/proc.txt (1.8)
+- http://lkml.org/lkml/2007/2/12/6
+- Documentation/filesystems/proc.txt (1.8)
 
 
 Thanks