oprofile: rename cpu buffer functions

This patch renames cpu buffer functions to something more oprofile
specific names. Functions will be moved to the global name space.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 737bd94..d295d92 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -331,7 +331,7 @@
 	off_t offset;
 	struct op_sample *sample;
 
-	sample = cpu_buffer_read_entry(cpu);
+	sample = op_cpu_buffer_read_entry(cpu);
 	if (!sample)
 		goto Error;
 	rip = sample->eip;
@@ -370,7 +370,7 @@
 		count = IBS_OP_CODE_SIZE;	/*IBS OP is 5 int64s*/
 
 	for (i = 0; i < count; i++) {
-		sample = cpu_buffer_read_entry(cpu);
+		sample = op_cpu_buffer_read_entry(cpu);
 		if (!sample)
 			goto Error;
 		add_event_entry(sample->eip);
@@ -537,11 +537,11 @@
 
 	add_cpu_switch(cpu);
 
-	cpu_buffer_reset(cpu);
-	available = cpu_buffer_entries(cpu);
+	op_cpu_buffer_reset(cpu);
+	available = op_cpu_buffer_entries(cpu);
 
 	for (i = 0; i < available; ++i) {
-		struct op_sample *s = cpu_buffer_read_entry(cpu);
+		struct op_sample *s = op_cpu_buffer_read_entry(cpu);
 		if (!s)
 			break;