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Attribute blocks are now allocated from slabs instead of malloc()

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This commit is contained in:
Maria Matejka 2022-10-12 18:04:39 +02:00
parent d3af586da4
commit 8d7f516b2a
2 changed files with 25 additions and 3 deletions
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1
lib/route.h
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@ -265,6 +265,7 @@ struct ea_storage {
#define EALF_SORTED 1 /* Attributes are sorted by code */
#define EALF_BISECT 2 /* Use interval bisection for searching */
#define EALF_CACHED 4 /* List is cached */
#define EALF_HUGE 8 /* List is too big to fit into slab */
struct ea_class {
#define EA_CLASS_INSIDE \

25
nest/rt-attr.c
View File

@ -182,6 +182,10 @@ DOMAIN(attrs) attrs_domain;
pool *rta_pool;
/* Assuming page size of 4096, these are magic values for slab allocation */
static const uint ea_slab_sizes[] = { 56, 112, 168, 288, 448, 800, 1344 };
static slab *ea_slab[ARRAY_SIZE(ea_slab_sizes)];
static slab *rte_src_slab;
static struct idm src_ids;
@ -1485,11 +1489,22 @@ ea_lookup(ea_list *o, int overlay)
}
uint elen = ea_list_size(o);
r = mb_alloc(rta_pool, elen + sizeof(struct ea_storage));
uint sz = elen + sizeof(struct ea_storage);
for (uint i=0; i<ARRAY_SIZE(ea_slab_sizes); i++)
if (sz <= ea_slab_sizes[i])
{
r = sl_alloc(ea_slab[i]);
break;
}
int huge = r ? 0 : EALF_HUGE;;
if (huge)
r = mb_alloc(rta_pool, sz);
ea_list_copy(r->l, o, elen);
ea_list_ref(r->l);
r->l->flags |= EALF_CACHED;
r->l->flags |= EALF_CACHED | huge;
r->hash_key = h;
r->uc = 1;
@ -1516,7 +1531,10 @@ ea_free_locked(struct ea_storage *a)
a->next_hash->pprev_hash = a->pprev_hash;
ea_list_unref(a->l);
if (a->l->flags & EALF_HUGE)
mb_free(a);
else
sl_free(a);
}
static void
@ -1580,6 +1598,9 @@ rta_init(void)
rta_pool = rp_new(&root_pool, "Attributes");
for (uint i=0; i<ARRAY_SIZE(ea_slab_sizes); i++)
ea_slab[i] = sl_new(rta_pool, ea_slab_sizes[i]);
rta_alloc_hash();
rte_src_init();
ea_class_init();