perf tools: Rename struct perf_data_file to perf_data

Rename struct perf_data_file to perf_data, because we will add the
possibility to have multiple files under perf.data, so the 'perf_data'
name fits better.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Changbin Du <changbin.du@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-39wn4d77phel3dgkzo3lyan0@git.kernel.org
[ Fixup recent changes in 'perf script --per-event-dump' ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c
index e3eb624..9fceae4 100644
--- a/tools/perf/builtin-buildid-cache.c
+++ b/tools/perf/builtin-buildid-cache.c
@@ -311,7 +311,7 @@ int cmd_buildid_cache(int argc, const char **argv)
 		   *kcore_filename = NULL;
 	char sbuf[STRERR_BUFSIZE];
 
-	struct perf_data_file file = {
+	struct perf_data data = {
 		.mode  = PERF_DATA_MODE_READ,
 	};
 	struct perf_session *session = NULL;
@@ -352,10 +352,10 @@ int cmd_buildid_cache(int argc, const char **argv)
 		nsi = nsinfo__new(ns_id);
 
 	if (missing_filename) {
-		file.path = missing_filename;
-		file.force = force;
+		data.path = missing_filename;
+		data.force = force;
 
-		session = perf_session__new(&file, false, NULL);
+		session = perf_session__new(&data, false, NULL);
 		if (session == NULL)
 			return -1;
 	}