From: Robert Richter <[email protected]> Improve error reporting.
Signed-off-by: Robert Richter <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
