perf kvm: Move code to generate filename for perf-kvm to function.
The code in builtin-kvm.c to generate filename for perf-kvm is useful to
other command such as builtin-diff.
This patch move the related code form builtin-kvm.c to util/util.c and
wrap them in a function named get_filename_for_perf_kvm.
Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/5e09a5c47e8a495e888cbdc65a6fafb2c950f529.1386368672.git.yangds.fnst@cn.fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index bae8756..4a57609 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -482,3 +482,17 @@
close(fd);
return err;
}
+
+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;
+}