diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 3c103d6..8e6646a 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -8,7 +8,7 @@
 struct ring_buffer_iter;
 
 /*
- * Don't reference this struct directly, use functions below.
+ * Don't refer to this struct directly, use functions below.
  */
 struct ring_buffer_event {
 	u32		type:2, len:3, time_delta:27;
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 10d202e..fa64e1f 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -91,7 +91,7 @@
  * tracing_off_permanent - permanently disable ring buffers
  *
  * This function, once called, will disable all ring buffers
- * permanenty.
+ * permanently.
  */
 void tracing_off_permanent(void)
 {
@@ -210,7 +210,7 @@
 
 struct buffer_data_page {
 	u64		 time_stamp;	/* page time stamp */
-	local_t		 commit;	/* write commited index */
+	local_t		 commit;	/* write committed index */
 	unsigned char	 data[];	/* data of buffer page */
 };
 
@@ -260,7 +260,7 @@
 	struct list_head		pages;
 	struct buffer_page		*head_page;	/* read from head */
 	struct buffer_page		*tail_page;	/* write to tail */
-	struct buffer_page		*commit_page;	/* commited pages */
+	struct buffer_page		*commit_page;	/* committed pages */
 	struct buffer_page		*reader_page;
 	unsigned long			overrun;
 	unsigned long			entries;
@@ -303,7 +303,7 @@
  * check_pages - integrity check of buffer pages
  * @cpu_buffer: CPU buffer with pages to test
  *
- * As a safty measure we check to make sure the data pages have not
+ * As a safety measure we check to make sure the data pages have not
  * been corrupted.
  */
 static int rb_check_pages(struct ring_buffer_per_cpu *cpu_buffer)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d898212..d7c175a 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1963,7 +1963,7 @@
 	struct tracer_opt *trace_opts = current_trace->flags->opts;
 
 
-	/* calulate max size */
+	/* calculate max size */
 	for (i = 0; trace_options[i]; i++) {
 		len += strlen(trace_options[i]);
 		len += 3; /* "no" and space */
diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c
index e3e7db6..0794dd3 100644
--- a/kernel/trace/trace_hw_branches.c
+++ b/kernel/trace/trace_hw_branches.c
@@ -75,7 +75,7 @@
 }
 
 /*
- * Start tracing on the current cpu.
+ * Stop tracing on the current cpu.
  * The argument is ignored.
  *
  * pre: bts_tracer_mutex must be locked.