[tip:perf/core] perf symbols: Use __map__is_kernel() instead of ad-hoc equivalent code

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  efdd5c6b81185223e07452a2f8b5467f81b13d96
Gitweb:     https://git.kernel.org/tip/efdd5c6b81185223e07452a2f8b5467f81b13d96
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Mon, 23 Apr 2018 16:43:47 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 26 Apr 2018 13:47:00 -0300

perf symbols: Use __map__is_kernel() instead of ad-hoc equivalent code

Shorter, should be equivalent code, use it.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-q90olng8sfkvrnsrwu7xnul6@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/symbol.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 1466814ebada..2b6292cff719 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1163,7 +1163,6 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 			   const char *kallsyms_filename)
 {
 	struct map_groups *kmaps = map__kmaps(map);
-	struct machine *machine;
 	struct kcore_mapfn_data md;
 	struct map *old_map, *new_map, *replacement_map = NULL;
 	bool is_64_bit;
@@ -1174,10 +1173,8 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 	if (!kmaps)
 		return -EINVAL;
 
-	machine = kmaps->machine;
-
 	/* This function requires that the map is the kernel map */
-	if (map != machine->vmlinux_maps[map->type])
+	if (!__map__is_kernel(map))
 		return -EINVAL;
 
 	if (!filename_from_kallsyms_filename(kcore_filename, "kcore",