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, 38 insertions, 0 deletions

diff --git a/drivers/soundwire/irq.h b/drivers/soundwire/irq.h
new file mode 100644
index 000000000..86e231840
--- /dev/null
+++ b/drivers/soundwire/irq.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 Cirrus Logic, Inc. and
+ *                    Cirrus Logic International Semiconductor Ltd.
+ */
+
+#ifndef __SDW_IRQ_H
+#define __SDW_IRQ_H
+
+#include <linux/soundwire/sdw.h>
+#include <linux/fwnode.h>
+
+#if IS_ENABLED(CONFIG_IRQ_DOMAIN)
+
+int sdw_irq_create(struct sdw_bus *bus,
+		   struct fwnode_handle *fwnode);
+void sdw_irq_delete(struct sdw_bus *bus);
+void sdw_irq_create_mapping(struct sdw_slave *slave);
+
+#else /* CONFIG_IRQ_DOMAIN */
+
+static inline int sdw_irq_create(struct sdw_bus *bus,
+				 struct fwnode_handle *fwnode)
+{
+	return 0;
+}
+
+static inline void sdw_irq_delete(struct sdw_bus *bus)
+{
+}
+
+static inline void sdw_irq_create_mapping(struct sdw_slave *slave)
+{
+}
+
+#endif /* CONFIG_IRQ_DOMAIN */
+
+#endif /* __SDW_IRQ_H */