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Mon, 20 Oct 2025 02:39:59 -0700 (PDT) Received: from pengdl-pc.mioffice.cn ([43.224.245.249]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-33d5de8091fsm7617200a91.19.2025.10.20.02.39.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Oct 2025 02:39:58 -0700 (PDT) From: Donglin Peng To: ast@kernel.org Cc: linux-kernel@vger.kernel.org, bpf@vger.kernel.org, Donglin Peng , Eduard Zingerman , Andrii Nakryiko , Alan Maguire , Song Liu , pengdonglin Subject: [RFC PATCH v2 3/5] libbpf: check if BTF is sorted to enable binary search Date: Mon, 20 Oct 2025 17:39:39 +0800 Message-Id: <20251020093941.548058-4-dolinux.peng@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251020093941.548058-1-dolinux.peng@gmail.com> References: <20251020093941.548058-1-dolinux.peng@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Now that libbpf supports sorted BTF types, add a check to determine whether binary search can be used for type lookups. Cc: Eduard Zingerman Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Alan Maguire Cc: Song Liu Signed-off-by: pengdonglin Signed-off-by: Donglin Peng --- tools/lib/bpf/btf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 87e47f0b78ba..92c370fe9b79 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -1091,6 +1091,8 @@ static struct btf *btf_new(const void *data, __u32 si= ze, struct btf *base_btf, b if (err) goto done; =20 + btf_check_sorted(btf, btf->start_id); + done: if (err) { btf__free(btf); @@ -1714,6 +1716,7 @@ static void btf_invalidate_raw_data(struct btf *btf) free(btf->raw_data_swapped); btf->raw_data_swapped =3D NULL; } + btf->nr_sorted_types =3D 0; } =20 /* Ensure BTF is ready to be modified (by splitting into a three memory @@ -5456,6 +5459,9 @@ static int btf_dedup_remap_types(struct btf_dedup *d) } } =20 + if (d->sort_by_kind_name) + btf_check_sorted(d->btf, d->btf->start_id); + if (!d->btf_ext) return 0; =20 --=20 2.34.1