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Subject[PATCH -tip 03/12] [BUGFIX]perf probe: Fix multiple --vars options behavior
Date
Fix a bug that perf-probe fails to initialize libdwfl and
shows incorrect error when user gives multiple --vars options.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
---
tools/perf/util/probe-event.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index a372d74..f022316 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -510,18 +510,18 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
if (ret < 0)
return ret;

- fd = open_vmlinux(module);
- if (fd < 0) {
- pr_warning("Failed to open debug information file.\n");
- return fd;
- }
-
setup_pager();

- for (i = 0; i < npevs && ret >= 0; i++)
+ for (i = 0; i < npevs && ret >= 0; i++) {
+ fd = open_vmlinux(module);
+ if (fd < 0) {
+ pr_warning("Failed to open debug information file.\n");
+ ret = fd;
+ break;
+ }
ret = show_available_vars_at(fd, &pevs[i], max_vls, _filter,
externs);
-
+ }
return ret;
}



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