diff mbox series

[RFC,bpf-next,1/5] bpf: add kind/metadata prefixes to uapi/linux/btf.h

Message ID 1669225312-28949-2-git-send-email-alan.maguire@oracle.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series bpf: making BTF self-describing | expand

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Commit Message

Alan Maguire Nov. 23, 2022, 5:41 p.m. UTC 
This allows us to share them with kernel and userspace so that
both libbpf and the kernel can parse BTF kind information.

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
---
 include/uapi/linux/btf.h       | 7 +++++++
 tools/include/uapi/linux/btf.h | 7 +++++++
 2 files changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h
index ec1798b..68628e9 100644
--- a/include/uapi/linux/btf.h
+++ b/include/uapi/linux/btf.h
@@ -197,4 +197,11 @@  struct btf_enum64 {
 	__u32	val_hi32;
 };
 
+/* Prefixes used for names encoding BTF kind information via structs;
+ * a "struct __BTF_KIND_ARRAY" represents how BTF_KIND_ARRAY is encoded,
+ * while a "struct __BTF_KIND_META_ARRAY" represents the metadata encoding.
+ */
+#define BTF_KIND_PFX		"__BTF_KIND_"
+#define BTF_KIND_META_PFX	"__BTF_KIND_META_"
+
 #endif /* _UAPI__LINUX_BTF_H__ */
diff --git a/tools/include/uapi/linux/btf.h b/tools/include/uapi/linux/btf.h
index ec1798b..68628e9 100644
--- a/tools/include/uapi/linux/btf.h
+++ b/tools/include/uapi/linux/btf.h
@@ -197,4 +197,11 @@  struct btf_enum64 {
 	__u32	val_hi32;
 };
 
+/* Prefixes used for names encoding BTF kind information via structs;
+ * a "struct __BTF_KIND_ARRAY" represents how BTF_KIND_ARRAY is encoded,
+ * while a "struct __BTF_KIND_META_ARRAY" represents the metadata encoding.
+ */
+#define BTF_KIND_PFX		"__BTF_KIND_"
+#define BTF_KIND_META_PFX	"__BTF_KIND_META_"
+
 #endif /* _UAPI__LINUX_BTF_H__ */