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Date: Tue, 14 Dec 2021 21:55:55 +0800
From: Pu Lehui <pulehui@...wei.com>
To: <ast@...nel.org>, <daniel@...earbox.net>, <andrii@...nel.org>,
<kafai@...com>, <songliubraving@...com>, <yhs@...com>,
<john.fastabend@...il.com>, <kpsingh@...nel.org>,
<paul.walmsley@...ive.com>, <palmer@...belt.com>,
<aou@...s.berkeley.edu>, <shuah@...nel.org>
CC: <linux-kselftest@...r.kernel.org>, <netdev@...r.kernel.org>,
<bpf@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<pulehui@...wei.com>
Subject: [PATCH bpf-next] selftests/bpf: Fix building error when using userspace pt_regs
When building bpf selftests on arm64, the following error will occur:
progs/loop2.c:20:7: error: incomplete definition of type 'struct
user_pt_regs'
Some archs, like arm64 and riscv, use userspace pt_regs in
bpf_tracing.h, which causes build failure when bpf prog use
macro in bpf_tracing.h. So let's use vmlinux.h directly.
Signed-off-by: Pu Lehui <pulehui@...wei.com>
---
tools/testing/selftests/bpf/progs/loop1.c | 8 ++------
tools/testing/selftests/bpf/progs/loop2.c | 8 ++------
tools/testing/selftests/bpf/progs/loop3.c | 8 ++------
tools/testing/selftests/bpf/progs/loop6.c | 20 ++++++-------------
.../selftests/bpf/progs/test_overhead.c | 8 ++------
.../selftests/bpf/progs/test_probe_user.c | 6 +-----
6 files changed, 15 insertions(+), 43 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/loop1.c b/tools/testing/selftests/bpf/progs/loop1.c
index 50e66772c046..ea04c035719c 100644
--- a/tools/testing/selftests/bpf/progs/loop1.c
+++ b/tools/testing/selftests/bpf/progs/loop1.c
@@ -1,11 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <stdint.h>
-#include <stddef.h>
-#include <stdbool.h>
-#include <linux/bpf.h>
+
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
diff --git a/tools/testing/selftests/bpf/progs/loop2.c b/tools/testing/selftests/bpf/progs/loop2.c
index 947bb7e988c2..edf07b1d310e 100644
--- a/tools/testing/selftests/bpf/progs/loop2.c
+++ b/tools/testing/selftests/bpf/progs/loop2.c
@@ -1,11 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <stdint.h>
-#include <stddef.h>
-#include <stdbool.h>
-#include <linux/bpf.h>
+
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
diff --git a/tools/testing/selftests/bpf/progs/loop3.c b/tools/testing/selftests/bpf/progs/loop3.c
index 76e93b31c14b..c8d2f2c55547 100644
--- a/tools/testing/selftests/bpf/progs/loop3.c
+++ b/tools/testing/selftests/bpf/progs/loop3.c
@@ -1,11 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <stdint.h>
-#include <stddef.h>
-#include <stdbool.h>
-#include <linux/bpf.h>
+
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
diff --git a/tools/testing/selftests/bpf/progs/loop6.c b/tools/testing/selftests/bpf/progs/loop6.c
index 38de0331e6b4..17ac4da5664d 100644
--- a/tools/testing/selftests/bpf/progs/loop6.c
+++ b/tools/testing/selftests/bpf/progs/loop6.c
@@ -1,8 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
-#include <linux/ptrace.h>
-#include <stddef.h>
-#include <linux/bpf.h>
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
@@ -25,12 +23,6 @@ char _license[] SEC("license") = "GPL";
#define SG_CHAIN 0x01UL
#define SG_END 0x02UL
-struct scatterlist {
- unsigned long page_link;
- unsigned int offset;
- unsigned int length;
-};
-
#define sg_is_chain(sg) ((sg)->page_link & SG_CHAIN)
#define sg_is_last(sg) ((sg)->page_link & SG_END)
#define sg_chain_ptr(sg) \
@@ -61,8 +53,8 @@ static inline struct scatterlist *get_sgp(struct scatterlist **sgs, int i)
return sgp;
}
-int config = 0;
-int result = 0;
+int g_config = 0;
+int g_result = 0;
SEC("kprobe/virtqueue_add_sgs")
int BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
@@ -72,7 +64,7 @@ int BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
__u64 length1 = 0, length2 = 0;
unsigned int i, n, len;
- if (config != 0)
+ if (g_config != 0)
return 0;
for (i = 0; (i < VIRTIO_MAX_SGS) && (i < out_sgs); i++) {
@@ -93,7 +85,7 @@ int BPF_KPROBE(trace_virtqueue_add_sgs, void *unused, struct scatterlist **sgs,
}
}
- config = 1;
- result = length2 - length1;
+ g_config = 1;
+ g_result = length2 - length1;
return 0;
}
diff --git a/tools/testing/selftests/bpf/progs/test_overhead.c b/tools/testing/selftests/bpf/progs/test_overhead.c
index abb7344b531f..df035e6a3143 100644
--- a/tools/testing/selftests/bpf/progs/test_overhead.c
+++ b/tools/testing/selftests/bpf/progs/test_overhead.c
@@ -1,14 +1,10 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 Facebook */
-#include <stdbool.h>
-#include <stddef.h>
-#include <linux/bpf.h>
-#include <linux/ptrace.h>
+
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
-struct task_struct;
-
SEC("kprobe/__set_task_comm")
int BPF_KPROBE(prog1, struct task_struct *tsk, const char *buf, bool exec)
{
diff --git a/tools/testing/selftests/bpf/progs/test_probe_user.c b/tools/testing/selftests/bpf/progs/test_probe_user.c
index 8812a90da4eb..bf6c0b864ace 100644
--- a/tools/testing/selftests/bpf/progs/test_probe_user.c
+++ b/tools/testing/selftests/bpf/progs/test_probe_user.c
@@ -1,10 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
-#include <linux/ptrace.h>
-#include <linux/bpf.h>
-
-#include <netinet/in.h>
-
+#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
--
2.25.1
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