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Diffstat (limited to 'tools/perf/util/unwind-libunwind-local.c')
-rw-r--r--tools/perf/util/unwind-libunwind-local.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/tools/perf/util/unwind-libunwind-local.c b/tools/perf/util/unwind-libunwind-local.c
index c0641882fd2f..dac536e28360 100644
--- a/tools/perf/util/unwind-libunwind-local.c
+++ b/tools/perf/util/unwind-libunwind-local.c
@@ -302,12 +302,31 @@ static int unwind_spec_ehframe(struct dso *dso, struct machine *machine,
return 0;
}
+struct read_unwind_spec_eh_frame_maps_cb_args {
+ struct dso *dso;
+ u64 base_addr;
+};
+
+static int read_unwind_spec_eh_frame_maps_cb(struct map *map, void *data)
+{
+
+ struct read_unwind_spec_eh_frame_maps_cb_args *args = data;
+
+ if (map__dso(map) == args->dso && map__start(map) - map__pgoff(map) < args->base_addr)
+ args->base_addr = map__start(map) - map__pgoff(map);
+
+ return 0;
+}
+
+
static int read_unwind_spec_eh_frame(struct dso *dso, struct unwind_info *ui,
u64 *table_data, u64 *segbase,
u64 *fde_count)
{
- struct map_rb_node *map_node;
- u64 base_addr = UINT64_MAX;
+ struct read_unwind_spec_eh_frame_maps_cb_args args = {
+ .dso = dso,
+ .base_addr = UINT64_MAX,
+ };
int ret, fd;
if (dso->data.eh_frame_hdr_offset == 0) {
@@ -325,16 +344,11 @@ static int read_unwind_spec_eh_frame(struct dso *dso, struct unwind_info *ui,
return -EINVAL;
}
- maps__for_each_entry(thread__maps(ui->thread), map_node) {
- struct map *map = map_node->map;
- u64 start = map__start(map);
+ maps__for_each_map(thread__maps(ui->thread), read_unwind_spec_eh_frame_maps_cb, &args);
- if (map__dso(map) == dso && start < base_addr)
- base_addr = start;
- }
- base_addr -= dso->data.elf_base_addr;
+ args.base_addr -= dso->data.elf_base_addr;
/* Address of .eh_frame_hdr */
- *segbase = base_addr + dso->data.eh_frame_hdr_addr;
+ *segbase = args.base_addr + dso->data.eh_frame_hdr_addr;
ret = unwind_spec_ehframe(dso, ui->machine, dso->data.eh_frame_hdr_offset,
table_data, fde_count);
if (ret)