Maksym Planeta, le Wed 30 Mar 2011 08:49:01 +0300, a écrit :
> +#define KALLOC_MAP_SIZE 8 * 1024 * 1024
> +#define ZONE_START_ORDER 4
> +#define ZONES_COUNT 12
> +#define ZONE_MAX_ORDER (ZONES_COUNT + ZONE_START_ORDER - 1)
> +#define SIZE_BY_ORDER(x) (1UL << (ZONE_START_ORDER + x))
> +#define ZONE_
Variables, which change their value only once, by the initialization
were defined as macros.
Routine for determining zone for object depends of object size. Since
zone sizes are powers of two this routine was optimized. On x86
proceessors will be used bsr instruction.
Signed-off-by: Maksym Planet
