[tip: perf/core] perf map: Use map->dso->kernel + map__kmaps() in map__kmaps()

[tip-bot2 for Arnaldo Carvalho de Melo]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     de90d513b2464d28a17fc4eaada97f4ad742ba00
Gitweb:        https://git.kernel.org/tip/de90d513b2464d28a17fc4eaada97f4ad742ba00
Author:        Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate:    Mon, 04 Nov 2019 16:31:33 -03:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Tue, 12 Nov 2019 08:20:52 -03:00

perf map: Use map->dso->kernel + map__kmaps() in map__kmaps()

Its equivalent to using map->groups to obtain the machine struct.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lkml.kernel.org/n/tip-bdbazuj4ggrmzxdviaqdrdwh@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/map.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 466c9b0..a4d889c 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -244,18 +244,11 @@ struct map *map__new2(u64 start, struct dso *dso)
 	return map;
 }
 
-/*
- * Use this and __map__is_kmodule() for map instances that are in
- * machine->kmaps, and thus have map->groups->machine all properly set, to
- * disambiguate between the kernel and modules.
- *
- * When the need arises, introduce map__is_{kernel,kmodule)() that
- * checks (map->groups != NULL && map->groups->machine != NULL &&
- * map->dso->kernel) before calling __map__is_{kernel,kmodule}())
- */
 bool __map__is_kernel(const struct map *map)
 {
-	return machine__kernel_map(map->groups->machine) == map;
+	if (!map->dso->kernel)
+		return false;
+	return machine__kernel_map(map__kmaps((struct map *)map)->machine) == map;
 }
 
 bool __map__is_extra_kernel_map(const struct map *map)