scheduler: continue rework

kernel-src/include/bitmap.h

@@ -0,0 +1,16 @@
+#ifndef _BITMAP_H
+#define _BITMAP_H
+
+#include <stddef.h>
+
+typedef struct {
+	long *data;
+	size_t size;
+} bitmap_t;
+
+int bitmap_init(bitmap_t *bitmap, size_t size);
+void bitmap_set(bitmap_t *bitmap, long idx, int v);
+long bitmap_find_first_set(bitmap_t *bitmap, long start_offset);
+
+
+#endif