Pass the full path including the symfs (if any) to libdw. Without this
unwinding fails with errors like this when a symfs is used:
unwind: failed with 'No such file or directory'"
Signed-off-by: Vincent Whitchurch <[email protected]>
---
tools/perf/util/unwind-libdw.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index 94aa40f6e348..1915c9769dbe 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -66,9 +66,13 @@ static int __report_module(struct addr_location *al, u64 ip,
mod = 0;
}
- if (!mod)
- mod = dwfl_report_elf(ui->dwfl, dso->short_name, dso->long_name, -1,
+ if (!mod) {
+ char filename[PATH_MAX];
+
+ __symbol__join_symfs(filename, sizeof(filename), dso->long_name);
+ mod = dwfl_report_elf(ui->dwfl, dso->short_name, filename, -1,
al->map->start - al->map->pgoff, false);
+ }
if (!mod) {
char filename[PATH_MAX];
--
2.34.1