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.h b/tools/perf/util/util.h
index 659abf3..0171213 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -321,4 +321,6 @@
int filename__read_int(const char *filename, int *value);
int filename__read_str(const char *filename, char **buf, size_t *sizep);
+
+const char *get_filename_for_perf_kvm(void);
#endif /* GIT_COMPAT_UTIL_H */