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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2019-10-04 15:57:29 +0300
committerIngo Molnar <mingo@kernel.org>2019-10-07 16:50:42 +0200
commitf733c6b508bcaa3441ba1eacf16efb9abd47489f (patch)
tree038058d100910520d038bbf440e026f6719be23b /kernel/events
parenta4cf7b392e430a82615b81a2adb0f83c6f746e5e (diff)
perf/core: Fix inheritance of aux_output groups
Commit: ab43762ef010 ("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> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191004125729.32397-1-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 3f0cb82e4fbc..f953dd16a5e2 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -11862,6 +11862,10 @@ 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;
}