tools/profile_example.txt: Modifies document structure

Matches option explanations and examples

  Document structure before modification
    (a) Explain -U and -K option
    (b) Show -C option example
    (c) Explain (b)
    (d) Show -U option example

  Modified document structure
    (e) Explain -C option
    (b) Show -C option example
    (c) Explain (b)
    (a) Explain -U and -K option
    (d) Show -U option example

tools/profile_example.txt

@@ -588,8 +588,7 @@ Sampling at 9 Hertz of all threads by user + kernel stack... Hit Ctrl-C to end.
 [...]
 
 
-You can also restrict profiling to just kernel stacks (-K) or user stacks (-U).
-For example, just user stacks:
+You can specify a cpu number using the -C option. Eg, profiling core/cpu (#7):
 
 # ./profile -C 7 2
 Sampling at 49 Hertz of all threads by user + kernel stack on CPU#7 for 2 secs.
@@ -624,7 +623,11 @@ Sampling at 49 Hertz of all threads by user + kernel stack on CPU#7 for 2 secs.
     -                python (2827439)
 
 in this example python application was busylooping on a single core/cpu (#7)
-we were collecting stack traces only from it
+we were collecting stack traces only from it.
+
+
+You can also restrict profiling to just kernel stacks (-K) or user stacks (-U).
+For example, just user stacks:
 
 # ./profile -U
 Sampling at 49 Hertz of all threads by user stack... Hit Ctrl-C to end.