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-rw-r--r--backport-include/linux/lockdep.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/backport-include/linux/lockdep.h b/backport-include/linux/lockdep.h
new file mode 100644
index 0000000..12b91b4
--- /dev/null
+++ b/backport-include/linux/lockdep.h
@@ -0,0 +1,23 @@
+#ifndef __BACKPORT_LINUX_LOCKDEP_H
+#define __BACKPORT_LINUX_LOCKDEP_H
+#include_next <linux/lockdep.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_IS_LESS(3,9,0)
+#undef lockdep_assert_held
+#ifdef CONFIG_LOCKDEP
+#define lockdep_assert_held(l) do { \
+ WARN_ON(debug_locks && !lockdep_is_held(l)); \
+ } while (0)
+#else
+#define lockdep_assert_held(l) do { (void)(l); } while (0)
+#endif /* CONFIG_LOCKDEP */
+#endif /* LINUX_VERSION_IS_LESS(3,9,0) */
+
+#if LINUX_VERSION_IS_LESS(4,15,0)
+#ifndef CONFIG_LOCKDEP
+struct lockdep_map { };
+#endif /* CONFIG_LOCKDEP */
+#endif /* LINUX_VERSION_IS_LESS(4,15,0) */
+
+#endif /* __BACKPORT_LINUX_LOCKDEP_H */