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libbpf: Cleanup struct bpf_core_cand. 

Remove two redundant fields from struct bpf_core_cand.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211201181040.23337-8-alexei.starovoitov@gmail.com
This commit is contained in:
Andrii Nakryiko 2021-12-01 10:10:30 -08:00
parent c5a2d43e99
commit 03d5b99138
2 changed files with 17 additions and 15 deletions
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30
tools/lib/bpf/libbpf.c
View File

@ -5179,15 +5179,18 @@ static int bpf_core_add_cands(struct bpf_core_cand *local_cand,
struct bpf_core_cand_list *cands)
{
struct bpf_core_cand *new_cands, *cand;
const struct btf_type *t;
const char *targ_name;
const struct btf_type *t, *local_t;
const char *targ_name, *local_name;
size_t targ_essent_len;
int n, i;
local_t = btf__type_by_id(local_cand->btf, local_cand->id);
local_name = btf__str_by_offset(local_cand->btf, local_t->name_off);
n = btf__type_cnt(targ_btf);
for (i = targ_start_id; i < n; i++) {
t = btf__type_by_id(targ_btf, i);
if (btf_kind(t) != btf_kind(local_cand->t))
if (btf_kind(t) != btf_kind(local_t))
continue;
targ_name = btf__name_by_offset(targ_btf, t->name_off);
@ -5198,12 +5201,12 @@ static int bpf_core_add_cands(struct bpf_core_cand *local_cand,
if (targ_essent_len != local_essent_len)
continue;
if (strncmp(local_cand->name, targ_name, local_essent_len) != 0)
if (strncmp(local_name, targ_name, local_essent_len) != 0)
continue;
pr_debug("CO-RE relocating [%d] %s %s: found target candidate [%d] %s %s in [%s]\n",
local_cand->id, btf_kind_str(local_cand->t),
local_cand->name, i, btf_kind_str(t), targ_name,
local_cand->id, btf_kind_str(local_t),
local_name, i, btf_kind_str(t), targ_name,
targ_btf_name);
new_cands = libbpf_reallocarray(cands->cands, cands->len + 1,
sizeof(*cands->cands));
@ -5212,8 +5215,6 @@ static int bpf_core_add_cands(struct bpf_core_cand *local_cand,
cand = &new_cands[cands->len];
cand->btf = targ_btf;
cand->t = t;
cand->name = targ_name;
cand->id = i;
cands->cands = new_cands;
@ -5320,18 +5321,21 @@ bpf_core_find_cands(struct bpf_object *obj, const struct btf *local_btf, __u32 l
struct bpf_core_cand local_cand = {};
struct bpf_core_cand_list *cands;
const struct btf *main_btf;
const struct btf_type *local_t;
const char *local_name;
size_t local_essent_len;
int err, i;
local_cand.btf = local_btf;
local_cand.t = btf__type_by_id(local_btf, local_type_id);
if (!local_cand.t)
local_cand.id = local_type_id;
local_t = btf__type_by_id(local_btf, local_type_id);
if (!local_t)
return ERR_PTR(-EINVAL);
local_cand.name = btf__name_by_offset(local_btf, local_cand.t->name_off);
if (str_is_empty(local_cand.name))
local_name = btf__name_by_offset(local_btf, local_t->name_off);
if (str_is_empty(local_name))
return ERR_PTR(-EINVAL);
local_essent_len = bpf_core_essential_name_len(local_cand.name);
local_essent_len = bpf_core_essential_name_len(local_name);
cands = calloc(1, sizeof(*cands));
if (!cands)

2
tools/lib/bpf/relo_core.h
View File

@ -8,8 +8,6 @@
struct bpf_core_cand {
const struct btf *btf;
const struct btf_type *t;
const char *name;
__u32 id;
};