selftests/bpf: Add a test for objects stuck in free_by_rcu_ttracegrafted

Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/soundwire/intel_auxdevice.h b/drivers/soundwire/intel_auxdevice.h
new file mode 100644
index 000000000..acaae0bd6
--- /dev/null
+++ b/drivers/soundwire/intel_auxdevice.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/* Copyright(c) 2015-2022 Intel Corporation. */
+
+#ifndef __SDW_INTEL_AUXDEVICE_H
+#define __SDW_INTEL_AUXDEVICE_H
+
+int intel_link_startup(struct auxiliary_device *auxdev);
+int intel_link_process_wakeen_event(struct auxiliary_device *auxdev);
+int intel_resume_child_device(struct device *dev, void *data);
+
+struct sdw_intel_link_dev {
+	struct auxiliary_device auxdev;
+	struct sdw_intel_link_res link_res;
+};
+
+#define auxiliary_dev_to_sdw_intel_link_dev(auxiliary_dev) \
+	container_of(auxiliary_dev, struct sdw_intel_link_dev, auxdev)
+
+#endif /* __SDW_INTEL_AUXDEVICE_H */