ESPFIX_STACKS_PER_PAGE
page_random = (rand / ESPFIX_STACKS_PER_PAGE)
page = cpu/ESPFIX_STACKS_PER_PAGE;
#define ESPFIX_MAX_CPUS (ESPFIX_STACKS_PER_PAGE * ESPFIX_PAGE_SPACE)
#define ESPFIX_MAX_PAGES DIV_ROUND_UP(CONFIG_NR_CPUS, ESPFIX_STACKS_PER_PAGE)
page = (cpu / ESPFIX_STACKS_PER_PAGE) ^ page_random;
slot = (cpu + slot_random) % ESPFIX_STACKS_PER_PAGE;
slot_random = rand % ESPFIX_STACKS_PER_PAGE;