From: Robert Richter <robert.rich...@calxeda.com>
Improve error reporting.
Signed-off-by: Robert Richter <robert.rich...@calxeda.com>
---
kernel/events/persistent.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/events/persistent.c b/kernel/events/persistent.c
index 1e6c03a..6612eb77 100644
--- a/kernel/events/persistent.c
+++ b/kernel/events/persistent.c
@@ -123,15 +123,15 @@ int perf_add_persistent_event(struct perf_event_attr
*attr, unsigned nr_pages)
for_each_possible_cpu(i) {
event = add_persistent_event_on_cpu(i, attr, nr_pages);
- if (IS_ERR(event)) {
- pr_err("%s: Error adding persistent event on cpu %d\n",
- __func__, i);
+ if (IS_ERR(event))
goto unwind;
- }
}
return 0;
unwind:
+ pr_err("%s: Error adding persistent event on cpu %d: %ld\n",
+ __func__, i, PTR_ERR(event));
+
while (--i >= 0)
del_persistent_event(i, attr);
--
1.8.1.1
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