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| author | Alexei Starovoitov <ast@kernel.org> | 2021-12-03 10:28:36 -0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-12-03 13:21:59 -0800 |
| commit | 78c1f8d0634cc35da613d844eda7c849fc50f643 (patch) | |
| tree | 107e51571324b5bc0cbf35095e5359d1f83115fe /tools/lib/bpf/libbpf.c | |
| parent | 0bf40542c05ef62997738cd45eea553415adb045 (diff) | |
| download | linux-78c1f8d0634cc35da613d844eda7c849fc50f643.tar.gz linux-78c1f8d0634cc35da613d844eda7c849fc50f643.tar.bz2 linux-78c1f8d0634cc35da613d844eda7c849fc50f643.zip | |
libbpf: Reduce bpf_core_apply_relo_insn() stack usage.
Reduce bpf_core_apply_relo_insn() stack usage and bump
BPF_CORE_SPEC_MAX_LEN limit back to 64.
Fixes: 29db4bea1d10 ("bpf: Prepare relo_core.c for kernel duty.")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211203182836.16646-1-alexei.starovoitov@gmail.com
Diffstat (limited to 'tools/lib/bpf/libbpf.c')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index de260c94e418..6db0b5e8540e 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -5515,6 +5515,7 @@ static int bpf_core_apply_relo(struct bpf_program *prog, const struct btf *local_btf, struct hashmap *cand_cache) { + struct bpf_core_spec specs_scratch[3] = {}; const void *type_key = u32_as_hash_key(relo->type_id); struct bpf_core_cand_list *cands = NULL; const char *prog_name = prog->name; @@ -5569,7 +5570,8 @@ static int bpf_core_apply_relo(struct bpf_program *prog, } } - return bpf_core_apply_relo_insn(prog_name, insn, insn_idx, relo, relo_idx, local_btf, cands); + return bpf_core_apply_relo_insn(prog_name, insn, insn_idx, relo, + relo_idx, local_btf, cands, specs_scratch); } static int |