tracing: fix typing mistake in hint message and comments

Impact: cleanup

Fix incorrect hint message in code and typos in comments.

Signed-off-by: Wenji Huang <wenji.huang@oracle.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index c6b442d..9e5ebd8 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -1,5 +1,5 @@
 /*
- * trace irqs off criticall timings
+ * trace irqs off critical timings
  *
  * Copyright (C) 2007-2008 Steven Rostedt <srostedt@redhat.com>
  * Copyright (C) 2008 Ingo Molnar <mingo@redhat.com>
diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c
index 30e14fe..82fbb5a 100644
--- a/kernel/trace/trace_sched_switch.c
+++ b/kernel/trace/trace_sched_switch.c
@@ -93,7 +93,7 @@
 	ret = register_trace_sched_switch(probe_sched_switch);
 	if (ret) {
 		pr_info("sched trace: Couldn't activate tracepoint"
-			" probe to kernel_sched_schedule\n");
+			" probe to kernel_sched_switch\n");
 		goto fail_deprobe_wake_new;
 	}
 
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 96d7164..276c51a 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -284,7 +284,7 @@
 	ret = register_trace_sched_switch(probe_wakeup_sched_switch);
 	if (ret) {
 		pr_info("sched trace: Couldn't activate tracepoint"
-			" probe to kernel_sched_schedule\n");
+			" probe to kernel_sched_switch\n");
 		goto fail_deprobe_wake_new;
 	}
 
diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index c72e749..01415f4 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -107,9 +107,9 @@
 	func();
 
 	/*
-	 * Some archs *cough*PowerPC*cough* add charachters to the
+	 * Some archs *cough*PowerPC*cough* add characters to the
 	 * start of the function names. We simply put a '*' to
-	 * accomodate them.
+	 * accommodate them.
 	 */
 	func_name = "*" STR(DYN_FTRACE_TEST_NAME);
 
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index eae9cef..39310e3 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -30,7 +30,7 @@
 	struct dentry		*file;
 };
 
-/* All of the sessions currently in use. Each stat file embeed one session */
+/* All of the sessions currently in use. Each stat file embed one session */
 static LIST_HEAD(all_stat_sessions);
 static DEFINE_MUTEX(all_stat_sessions_mutex);
 
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index 7c9a2d8..c771af4 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -327,5 +327,5 @@
 			d_tracer, NULL, &sysprof_sample_fops);
 	if (entry)
 		return;
-	pr_warning("Could not create debugfs 'dyn_ftrace_total_info' entry\n");
+	pr_warning("Could not create debugfs 'sysprof_sample_period' entry\n");
 }