Replace prog and callback in bpf_async_cb after removing visibility of bpf_async_cb in bpf_async_cancel_and_free() to increase the chances the scheduled async callbacks short-circuit execution and exit early, and not starting a RCU tasks trace section. This improves the overall time spent in running the wq selftest. Suggested-by: Alexei Starovoitov Signed-off-by: Kumar Kartikeya Dwivedi --- kernel/bpf/helpers.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index b7aec34540c2..a4f039cee88b 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1664,6 +1664,7 @@ static void bpf_async_cancel_and_free(struct bpf_async_kern *async) if (!cb) return; + bpf_async_update_prog_callback(cb, NULL, NULL); /* * No refcount_inc_not_zero(&cb->refcnt) here. Dropping the last * refcnt. Either synchronously or asynchronously in irq_work. -- 2.47.3