kernel: initial <512 byte object only slab

kernel-src/include/kernel/slab.h

@@ -0,0 +1,29 @@
+#ifndef _SLAB_H
+#define _SLAB_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct slab_t {
+	struct slab_t *next;
+	struct slab_t *prev;
+	size_t used;
+	void **free;
+} slab_t;
+
+typedef struct scache_t {
+	// TODO lock
+	void (*ctor)(struct scache_t *cache, void *obj);
+	void (*dtor)(struct scache_t *cache, void *obj);
+	slab_t *full;
+	slab_t *partial;
+	slab_t *empty;
+	size_t size;
+	size_t truesize;
+	size_t alignment;
+	size_t slabobjcount;
+} scache_t;
+
+void slab_init();
+
+#endif