diff options
| author | Roman Gushchin <guro@fb.com> | 2020-12-01 13:58:38 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-12-02 18:32:45 -0800 |
| commit | 881456811a33b9d3952897f4d01ee4d74fa2f30e (patch) | |
| tree | b8cc4d191dfc8432af151ea9f0eecc8d64c586bb /kernel | |
| parent | 1440290adf7bb27602bbb7d8b2dc3d903ed3c6c9 (diff) | |
| download | linux-881456811a33b9d3952897f4d01ee4d74fa2f30e.tar.bz2 | |
bpf: Refine memcg-based memory accounting for hashtab maps
Include percpu objects and the size of map metadata into the
accounting.
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201201215900.3569844-13-guro@fb.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/hashtab.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c index ec46266aaf1c..bf70fb3ed9c1 100644 --- a/kernel/bpf/hashtab.c +++ b/kernel/bpf/hashtab.c @@ -292,7 +292,8 @@ static int prealloc_init(struct bpf_htab *htab) u32 size = round_up(htab->map.value_size, 8); void __percpu *pptr; - pptr = __alloc_percpu_gfp(size, 8, GFP_USER | __GFP_NOWARN); + pptr = bpf_map_alloc_percpu(&htab->map, size, 8, + GFP_USER | __GFP_NOWARN); if (!pptr) goto free_elems; htab_elem_set_ptr(get_htab_elem(htab, i), htab->map.key_size, @@ -346,8 +347,8 @@ static int alloc_extra_elems(struct bpf_htab *htab) struct pcpu_freelist_node *l; int cpu; - pptr = __alloc_percpu_gfp(sizeof(struct htab_elem *), 8, - GFP_USER | __GFP_NOWARN); + pptr = bpf_map_alloc_percpu(&htab->map, sizeof(struct htab_elem *), 8, + GFP_USER | __GFP_NOWARN); if (!pptr) return -ENOMEM; @@ -444,7 +445,7 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr) int err, i; u64 cost; - htab = kzalloc(sizeof(*htab), GFP_USER); + htab = kzalloc(sizeof(*htab), GFP_USER | __GFP_ACCOUNT); if (!htab) return ERR_PTR(-ENOMEM); @@ -502,8 +503,10 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr) goto free_charge; for (i = 0; i < HASHTAB_MAP_LOCK_COUNT; i++) { - htab->map_locked[i] = __alloc_percpu_gfp(sizeof(int), - sizeof(int), GFP_USER); + htab->map_locked[i] = bpf_map_alloc_percpu(&htab->map, + sizeof(int), + sizeof(int), + GFP_USER); if (!htab->map_locked[i]) goto free_map_locked; } @@ -925,8 +928,9 @@ static struct htab_elem *alloc_htab_elem(struct bpf_htab *htab, void *key, l_new = ERR_PTR(-E2BIG); goto dec_count; } - l_new = kmalloc_node(htab->elem_size, GFP_ATOMIC | __GFP_NOWARN, - htab->map.numa_node); + l_new = bpf_map_kmalloc_node(&htab->map, htab->elem_size, + GFP_ATOMIC | __GFP_NOWARN, + htab->map.numa_node); if (!l_new) { l_new = ERR_PTR(-ENOMEM); goto dec_count; @@ -942,8 +946,8 @@ static struct htab_elem *alloc_htab_elem(struct bpf_htab *htab, void *key, pptr = htab_elem_get_ptr(l_new, key_size); } else { /* alloc_percpu zero-fills */ - pptr = __alloc_percpu_gfp(size, 8, - GFP_ATOMIC | __GFP_NOWARN); + pptr = bpf_map_alloc_percpu(&htab->map, size, 8, + GFP_ATOMIC | __GFP_NOWARN); if (!pptr) { kfree(l_new); l_new = ERR_PTR(-ENOMEM); |