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Subject[PATCH] perf: Fix inheritance of aux_output groups
Date
Commit

b43762ef010 ("perf: Allow normal events to output AUX data")

forgets to configure aux_output relation in the inherited groups, which
results in child PEBS events forever failing to schedule.

Fix this by setting up the AUX output link in the inheritance path.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
kernel/events/core.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index f5bb2557d5f6..761995f21b30 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -12024,6 +12024,10 @@ static int inherit_group(struct perf_event *parent_event,
child, leader, child_ctx);
if (IS_ERR(child_ctr))
return PTR_ERR(child_ctr);
+
+ if (sub->aux_event == parent_event &&
+ !perf_get_aux_event(child_ctr, leader))
+ return -EINVAL;
}
return 0;
}
--
2.23.0
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