perf unwind: Move unwind__prepare_access from thread_new into thread__insert_map
To determine the libunwind methods to use, we should get the
32bit/64bit information from maps of a thread. When a thread is newly
created, the information is not prepared. This patch moves
unwind__prepare_access() into thread__insert_map() so we can get the
information we need from maps. Meanwhile, let thread__insert_map()
return value and show messages on error.
Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1464924803-22214-5-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 205d270..9d931f5 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1353,11 +1353,16 @@
if (map == NULL)
goto out_problem_map;
- thread__insert_map(thread, map);
+ ret = thread__insert_map(thread, map);
+ if (ret)
+ goto out_problem_insert;
+
thread__put(thread);
map__put(map);
return 0;
+out_problem_insert:
+ map__put(map);
out_problem_map:
thread__put(thread);
out_problem:
@@ -1403,11 +1408,16 @@
if (map == NULL)
goto out_problem_map;
- thread__insert_map(thread, map);
+ ret = thread__insert_map(thread, map);
+ if (ret)
+ goto out_problem_insert;
+
thread__put(thread);
map__put(map);
return 0;
+out_problem_insert:
+ map__put(map);
out_problem_map:
thread__put(thread);
out_problem: