[PATCH v2 bpf-next] bpf: Clean up individual BTF_ID code

[PATCH v2 bpf-next] bpf: Clean up individual BTF_ID code

[Feng Yang]

From: Feng Yang <yangfeng@kylinos.cn>

Use BTF_ID_LIST_SINGLE(a, b, c) instead of
BTF_ID_LIST(a)
BTF_ID(b, c)

Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
---
Changes in v2:
- Add the missing ones, thanks: jirka.
- Link to v1: https://lore.kernel.org/all/20250709082038.103249-1-yangfeng59949@163.com/
---
 kernel/bpf/btf.c         | 3 +--
 kernel/bpf/link_iter.c   | 3 +--
 kernel/bpf/prog_iter.c   | 3 +--
 kernel/kallsyms.c        | 3 +--
 kernel/trace/bpf_trace.c | 3 +--
 net/ipv6/route.c         | 3 +--
 net/netlink/af_netlink.c | 3 +--
 net/sched/bpf_qdisc.c    | 9 +++------
 8 files changed, 10 insertions(+), 20 deletions(-)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 2dd13eea7b0e..0aff814cb53a 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6200,8 +6200,7 @@ int get_kern_ctx_btf_id(struct bpf_verifier_log *log, enum bpf_prog_type prog_ty
 	return kctx_type_id;
 }
 
-BTF_ID_LIST(bpf_ctx_convert_btf_id)
-BTF_ID(struct, bpf_ctx_convert)
+BTF_ID_LIST_SINGLE(bpf_ctx_convert_btf_id, struct, bpf_ctx_convert)
 
 static struct btf *btf_parse_base(struct btf_verifier_env *env, const char *name,
 				  void *data, unsigned int data_size)
diff --git a/kernel/bpf/link_iter.c b/kernel/bpf/link_iter.c
index fec8005a121c..8158e9c1af7b 100644
--- a/kernel/bpf/link_iter.c
+++ b/kernel/bpf/link_iter.c
@@ -78,8 +78,7 @@ static const struct seq_operations bpf_link_seq_ops = {
 	.show	= bpf_link_seq_show,
 };
 
-BTF_ID_LIST(btf_bpf_link_id)
-BTF_ID(struct, bpf_link)
+BTF_ID_LIST_SINGLE(btf_bpf_link_id, struct, bpf_link)
 
 static const struct bpf_iter_seq_info bpf_link_seq_info = {
 	.seq_ops		= &bpf_link_seq_ops,
diff --git a/kernel/bpf/prog_iter.c b/kernel/bpf/prog_iter.c
index 53a73c841c13..85d8fcb56fb7 100644
--- a/kernel/bpf/prog_iter.c
+++ b/kernel/bpf/prog_iter.c
@@ -78,8 +78,7 @@ static const struct seq_operations bpf_prog_seq_ops = {
 	.show	= bpf_prog_seq_show,
 };
 
-BTF_ID_LIST(btf_bpf_prog_id)
-BTF_ID(struct, bpf_prog)
+BTF_ID_LIST_SINGLE(btf_bpf_prog_id, struct, bpf_prog)
 
 static const struct bpf_iter_seq_info bpf_prog_seq_info = {
 	.seq_ops		= &bpf_prog_seq_ops,
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 4198f30aac3c..1e7635864124 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -829,8 +829,7 @@ static struct bpf_iter_reg ksym_iter_reg_info = {
 	.seq_info		= &ksym_iter_seq_info,
 };
 
-BTF_ID_LIST(btf_ksym_iter_id)
-BTF_ID(struct, kallsym_iter)
+BTF_ID_LIST_SINGLE(btf_ksym_iter_id, struct, kallsym_iter)
 
 static int __init bpf_ksym_iter_register(void)
 {
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index e7f97a9a8bbd..c8162dc89dc3 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -781,8 +781,7 @@ BPF_CALL_1(bpf_task_pt_regs, struct task_struct *, task)
 	return (unsigned long) task_pt_regs(task);
 }
 
-BTF_ID_LIST(bpf_task_pt_regs_ids)
-BTF_ID(struct, pt_regs)
+BTF_ID_LIST_SINGLE(bpf_task_pt_regs_ids, struct, pt_regs)
 
 const struct bpf_func_proto bpf_task_pt_regs_proto = {
 	.func		= bpf_task_pt_regs,
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 79c8f1acf8a3..0d5464c64965 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6805,8 +6805,7 @@ void __init ip6_route_init_special_entries(void)
 #if defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_PROC_FS)
 DEFINE_BPF_ITER_FUNC(ipv6_route, struct bpf_iter_meta *meta, struct fib6_info *rt)
 
-BTF_ID_LIST(btf_fib6_info_id)
-BTF_ID(struct, fib6_info)
+BTF_ID_LIST_SINGLE(btf_fib6_info_id, struct, fib6_info)
 
 static const struct bpf_iter_seq_info ipv6_route_seq_info = {
 	.seq_ops		= &ipv6_route_seq_ops,
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index e8972a857e51..bea064febf80 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2869,8 +2869,7 @@ static const struct rhashtable_params netlink_rhashtable_params = {
 };
 
 #if defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_PROC_FS)
-BTF_ID_LIST(btf_netlink_sock_id)
-BTF_ID(struct, netlink_sock)
+BTF_ID_LIST_SINGLE(btf_netlink_sock_id, struct, netlink_sock)
 
 static const struct bpf_iter_seq_info netlink_seq_info = {
 	.seq_ops		= &netlink_seq_ops,
diff --git a/net/sched/bpf_qdisc.c b/net/sched/bpf_qdisc.c
index 7ea8b54b2ab1..adcb618a2bfc 100644
--- a/net/sched/bpf_qdisc.c
+++ b/net/sched/bpf_qdisc.c
@@ -130,8 +130,7 @@ static int bpf_qdisc_btf_struct_access(struct bpf_verifier_log *log,
 	return 0;
 }
 
-BTF_ID_LIST(bpf_qdisc_init_prologue_ids)
-BTF_ID(func, bpf_qdisc_init_prologue)
+BTF_ID_LIST_SINGLE(bpf_qdisc_init_prologue_ids, func, bpf_qdisc_init_prologue)
 
 static int bpf_qdisc_gen_prologue(struct bpf_insn *insn_buf, bool direct_write,
 				  const struct bpf_prog *prog)
@@ -161,8 +160,7 @@ static int bpf_qdisc_gen_prologue(struct bpf_insn *insn_buf, bool direct_write,
 	return insn - insn_buf;
 }
 
-BTF_ID_LIST(bpf_qdisc_reset_destroy_epilogue_ids)
-BTF_ID(func, bpf_qdisc_reset_destroy_epilogue)
+BTF_ID_LIST_SINGLE(bpf_qdisc_reset_destroy_epilogue_ids, func, bpf_qdisc_reset_destroy_epilogue)
 
 static int bpf_qdisc_gen_epilogue(struct bpf_insn *insn_buf, const struct bpf_prog *prog,
 				  s16 ctx_stack_off)
@@ -451,8 +449,7 @@ static struct bpf_struct_ops bpf_Qdisc_ops = {
 	.owner = THIS_MODULE,
 };
 
-BTF_ID_LIST(bpf_sk_buff_dtor_ids)
-BTF_ID(func, bpf_kfree_skb)
+BTF_ID_LIST_SINGLE(bpf_sk_buff_dtor_ids, func, bpf_kfree_skb)
 
 static int __init bpf_qdisc_kfunc_init(void)
 {
-- 
2.43.0

Re: [PATCH v2 bpf-next] bpf: Clean up individual BTF_ID code

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Thu, 10 Jul 2025 13:54:19 +0800 you wrote:
> From: Feng Yang <yangfeng@kylinos.cn>
> 
> Use BTF_ID_LIST_SINGLE(a, b, c) instead of
> BTF_ID_LIST(a)
> BTF_ID(b, c)
> 
> Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
> 
> [...]

Here is the summary with links:
  - [v2,bpf-next] bpf: Clean up individual BTF_ID code
    https://git.kernel.org/bpf/bpf-next/c/62ef449b8d8e

You are awesome, thank you!
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