tools/testing/selftests/bpf/progs/test_btf_decl_tag.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/test_btf_decl_tag.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_btf_decl_tag.c
Extension
.c
Size
973 bytes
Lines
51
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct key_t {
	int a;
	int b __tag1 __tag2;
	int c;
} __tag1 __tag2;

typedef struct {
	int a;
	int b;
} value_t __tag1 __tag2;

struct {
	__uint(type, BPF_MAP_TYPE_HASH);
	__uint(max_entries, 3);
	__type(key, struct key_t);
	__type(value, value_t);
} hashmap1 SEC(".maps");


static __noinline __tag1 __tag2 int foo(int x __tag1 __tag2)
{
	struct key_t key;
	value_t val = {};

	key.a = key.b = key.c = x;
	bpf_map_update_elem(&hashmap1, &key, &val, 0);
	return 0;
}

SEC("fentry/bpf_fentry_test1")
int BPF_PROG(sub, int x)
{
	return foo(x);
}

Annotation

Implementation Notes