diff options
Diffstat (limited to 'tools/lib/bpf/btf.c')
| -rw-r--r-- | tools/lib/bpf/btf.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 8a7650e6480f9..39b18521d5472 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -4390,6 +4390,19 @@ static bool btf_dedup_identical_structs(struct btf_dedup *d, __u32 id1, __u32 id return true; } +static bool btf_dedup_identical_ptrs(struct btf_dedup *d, __u32 id1, __u32 id2) +{ + struct btf_type *t1, *t2; + + t1 = btf_type_by_id(d->btf, id1); + t2 = btf_type_by_id(d->btf, id2); + + if (!btf_is_ptr(t1) || !btf_is_ptr(t2)) + return false; + + return t1->type == t2->type; +} + /* * Check equivalence of BTF type graph formed by candidate struct/union (we'll * call it "candidate graph" in this description for brevity) to a type graph @@ -4522,6 +4535,9 @@ static int btf_dedup_is_equiv(struct btf_dedup *d, __u32 cand_id, */ if (btf_dedup_identical_structs(d, hypot_type_id, cand_id)) return 1; + /* A similar case is again observed for PTRs. */ + if (btf_dedup_identical_ptrs(d, hypot_type_id, cand_id)) + return 1; return 0; } |