void prefetcher_access_hit(struct mod_stack_t *stack,
struct mod_t *target_mod) {
int it_index;
if (target_mod->kind != mod_kind_cache || !target_mod->cache->prefetcher)
return;
if (mod_block_get_prefetched(target_mod, stack->addr)) {
/* This block was prefetched. Now it has a real access. For the purposes
* of the prefetcher heuristic, this is still a miss. Hence, update
* the prefetcher tables. */
it_index = prefetcher_update_tables(stack, target_mod);
/* Clear the prefetched flag since we have a real access now */
mem_debug(" addr 0x%x %s : clearing \"prefetched\" flag\n", stack->addr,
target_mod->name);
mod_block_set_prefetched(target_mod, stack->addr, 0);
if (it_index < 0) return;
if (target_mod->cache->prefetcher->type == prefetcher_type_ghb_pc_cs) {
/* Perform ghb based PC/CS prefetching
* (Program Counter based index, Constant Stride) */
prefetcher_ghb_pc_cs(target_mod, stack, it_index);
} else {
assert(target_mod->cache->prefetcher->type == prefetcher_type_ghb_pc_dc);
/* Perform ghb based PC/DC prefetching
* (Program Counter based index, Delta Correlation) */
prefetcher_ghb_pc_dc(target_mod, stack, it_index);
}
}
}
void prefetcher_access_miss(struct mod_stack_t *stack, struct mod_t *target_mod)
{
int it_index;
if (target_mod->kind != mod_kind_cache || !target_mod->cache->prefetcher)
return;
it_index = prefetcher_update_tables(stack, target_mod);
if (it_index < 0)
return;
if (target_mod->cache->prefetcher->type == prefetcher_type_ghb_pc_cs)
{
/* Perform ghb based PC/CS prefetching
* (Program Counter based index, Constant Stride) */
prefetcher_ghb_pc_cs(target_mod, stack, it_index);
}
else
{
assert(target_mod->cache->prefetcher->type == prefetcher_type_ghb_pc_dc);
/* Perform ghb based PC/DC prefetching
* (Program Counter based index, Delta Correlation) */
prefetcher_ghb_pc_dc(target_mod, stack, it_index);
}
}
