perf kvm: Make function only used by 'perf kvm' static

No need to have this polluting util.h, it was polluted enough already.

Link: http://lkml.kernel.org/n/tip-wfdidqlwbvi5y0s61kv6z2gn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-kvm.c

@@ -36,6 +36,20 @@
 #include <pthread.h>
 #include <math.h>
 
+static const char *get_filename_for_perf_kvm(void)
+{
+	const char *filename;
+
+	if (perf_host && !perf_guest)
+		filename = strdup("perf.data.host");
+	else if (!perf_host && perf_guest)
+		filename = strdup("perf.data.guest");
+	else
+		filename = strdup("perf.data.kvm");
+
+	return filename;
+}
+
 #ifdef HAVE_KVM_STAT_SUPPORT
 #include "util/kvm-stat.h"
 

tools/perf/util/util.c

@@ -496,20 +496,6 @@ int parse_callchain_record(const char *arg, struct callchain_param *param)
 	return ret;
 }
 
-const char *get_filename_for_perf_kvm(void)
-{
-	const char *filename;
-
-	if (perf_host && !perf_guest)
-		filename = strdup("perf.data.host");
-	else if (!perf_host && perf_guest)
-		filename = strdup("perf.data.guest");
-	else
-		filename = strdup("perf.data.kvm");
-
-	return filename;
-}
-
 int perf_event_paranoid(void)
 {
 	int value;

tools/perf/util/util.h

@@ -100,7 +100,6 @@ int perf_event_paranoid(void);
 void mem_bswap_64(void *src, int byte_size);
 void mem_bswap_32(void *src, int byte_size);
 
-const char *get_filename_for_perf_kvm(void);
 bool find_process(const char *name);
 
 #ifdef HAVE_ZLIB_SUPPORT