tracing/trivial: Fix typos and make an int into a bool

Fix up a few typos in comments and convert an int into a bool in
update_traceon_count().

Link: http://lkml.kernel.org/r/546DD445.5080108@hitachi.com

Suggested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

kernel/trace/ftrace.c

@@ -1119,7 +1119,7 @@ static struct ftrace_ops global_ops = {
 
 /*
  * This is used by __kernel_text_address() to return true if the
- * the address is on a dynamically allocated trampoline that would
+ * address is on a dynamically allocated trampoline that would
  * not return true for either core_kernel_text() or
  * is_module_text_address().
  */

kernel/trace/trace_functions.c

@@ -261,14 +261,14 @@ static struct tracer function_trace __tracer_data =
 };
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-static void update_traceon_count(void **data, int on)
+static void update_traceon_count(void **data, bool on)
 {
 	long *count = (long *)data;
 	long old_count = *count;
 
 	/*
 	 * Tracing gets disabled (or enabled) once per count.
-	 * This function can be called at the same time on mulitple CPUs.
+	 * This function can be called at the same time on multiple CPUs.
 	 * It is fine if both disable (or enable) tracing, as disabling
 	 * (or enabling) the second time doesn't do anything as the
 	 * state of the tracer is already disabled (or enabled).
@@ -288,7 +288,7 @@ static void update_traceon_count(void **data, int on)
 	 * the new state is visible before changing the counter by
 	 * one minus the old counter. This guarantees that another CPU
 	 * executing this code will see the new state before seeing
-	 * the new counter value, and would not do anthing if the new
+	 * the new counter value, and would not do anything if the new
 	 * counter is seen.
 	 *
 	 * Note, there is no synchronization between this and a user