--- /dev/null
+#ifndef __TOOLS_LINUX_SHRINKER_H
+#define __TOOLS_LINUX_SHRINKER_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+
+struct shrink_control {
+ gfp_t gfp_mask;
+ unsigned long nr_to_scan;
+};
+
+#define SHRINK_STOP (~0UL)
+
+struct seq_buf;
+struct shrinker {
+ unsigned long (*count_objects)(struct shrinker *,
+ struct shrink_control *sc);
+ unsigned long (*scan_objects)(struct shrinker *,
+ struct shrink_control *sc);
+ void (*to_text)(struct seq_buf *, struct shrinker *);
+
+ int seeks; /* seeks to recreate an obj */
+ long batch; /* reclaim batch size, 0 = default */
+ struct list_head list;
+ void *private_data;
+};
+
+void shrinker_free(struct shrinker *);
+struct shrinker *shrinker_alloc(unsigned int, const char *, ...);
+
+int shrinker_register(struct shrinker *);
+
+void run_shrinkers(gfp_t gfp_mask, bool);
+
+#endif /* __TOOLS_LINUX_SHRINKER_H */