diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/btf_decl_tag.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/btf_decl_tag.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/btf_decl_tag.c b/tools/testing/selftests/bpf/progs/btf_decl_tag.c new file mode 100644 index 000000000000..c88ccc53529a --- /dev/null +++ b/tools/testing/selftests/bpf/progs/btf_decl_tag.c @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021 Facebook */ +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> + +#if __has_attribute(btf_decl_tag) +#define __tag1 __attribute__((btf_decl_tag("tag1"))) +#define __tag2 __attribute__((btf_decl_tag("tag2"))) +volatile const bool skip_tests __tag1 __tag2 = false; +#else +#define __tag1 +#define __tag2 +volatile const bool skip_tests = true; +#endif + +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 int foo(int x __tag1 __tag2) __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); +} |