AcoSail/kernel_optimize_test
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Merge branch 'selftests/bpf: BTF-based kernel data display'

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Alan Maguire says:

====================
Resolve issues in bpf selftests introduced with BTF-based kernel data
display selftests; these are

- a warning introduced in snprintf_btf.c; and
- compilation failures with old kernels vmlinux.h
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Alexei Starovoitov 2020-09-29 11:10:49 -07:00
commit 3aae4a3806
4 changed files with 52 additions and 2 deletions
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2
tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
View File

@ -27,7 +27,7 @@ void test_snprintf_btf(void)
goto cleanup;
/* generate receive event */
system("ping -c 1 127.0.0.1 > /dev/null");
(void) system("ping -c 1 127.0.0.1 > /dev/null");
if (bss->skip) {
printf("%s:SKIP:no __builtin_btf_type_id\n", __func__);

23
tools/testing/selftests/bpf/progs/bpf_iter.h
View File

@ -14,6 +14,11 @@
#define bpf_iter__bpf_map_elem bpf_iter__bpf_map_elem___not_used
#define bpf_iter__bpf_sk_storage_map bpf_iter__bpf_sk_storage_map___not_used
#define bpf_iter__sockmap bpf_iter__sockmap___not_used
#define btf_ptr btf_ptr___not_used
#define BTF_F_COMPACT BTF_F_COMPACT___not_used
#define BTF_F_NONAME BTF_F_NONAME___not_used
#define BTF_F_PTR_RAW BTF_F_PTR_RAW___not_used
#define BTF_F_ZERO BTF_F_ZERO___not_used
#include "vmlinux.h"
#undef bpf_iter_meta
#undef bpf_iter__bpf_map
@ -28,6 +33,11 @@
#undef bpf_iter__bpf_map_elem
#undef bpf_iter__bpf_sk_storage_map
#undef bpf_iter__sockmap
#undef btf_ptr
#undef BTF_F_COMPACT
#undef BTF_F_NONAME
#undef BTF_F_PTR_RAW
#undef BTF_F_ZERO
struct bpf_iter_meta {
struct seq_file *seq;
@ -105,3 +115,16 @@ struct bpf_iter__sockmap {
void *key;
struct sock *sk;
};
struct btf_ptr {
void *ptr;
__u32 type_id;
__u32 flags;
};
enum {
BTF_F_COMPACT = (1ULL << 0),
BTF_F_NONAME = (1ULL << 1),
BTF_F_PTR_RAW = (1ULL << 2),
BTF_F_ZERO = (1ULL << 3),
};

27
tools/testing/selftests/bpf/progs/btf_ptr.h Normal file
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@ -0,0 +1,27 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2020, Oracle and/or its affiliates. */
/* "undefine" structs in vmlinux.h, because we "override" them below */
#define btf_ptr btf_ptr___not_used
#define BTF_F_COMPACT BTF_F_COMPACT___not_used
#define BTF_F_NONAME BTF_F_NONAME___not_used
#define BTF_F_PTR_RAW BTF_F_PTR_RAW___not_used
#define BTF_F_ZERO BTF_F_ZERO___not_used
#include "vmlinux.h"
#undef btf_ptr
#undef BTF_F_COMPACT
#undef BTF_F_NONAME
#undef BTF_F_PTR_RAW
#undef BTF_F_ZERO
struct btf_ptr {
void *ptr;
__u32 type_id;
__u32 flags;
};
enum {
BTF_F_COMPACT = (1ULL << 0),
BTF_F_NONAME = (1ULL << 1),
BTF_F_PTR_RAW = (1ULL << 2),
BTF_F_ZERO = (1ULL << 3),
};

2
tools/testing/selftests/bpf/progs/netif_receive_skb.c
View File

@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Oracle and/or its affiliates. */
#include "vmlinux.h"
#include "btf_ptr.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_core_read.h>