netdev - [PATCH v2 bpf-next 3/3] selftests/bpf: use typedef'ed arrays as map values

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Message-ID: <20190711065307.2425636-4-andriin@fb.com>
Date:   Wed, 10 Jul 2019 23:53:07 -0700
From:   Andrii Nakryiko <andriin@...com>
To:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <ast@...com>,
        <daniel@...earbox.net>, <yhs@...com>
CC:     <andrii.nakryiko@...il.com>, <kernel-team@...com>,
        Andrii Nakryiko <andriin@...com>
Subject: [PATCH v2 bpf-next 3/3] selftests/bpf: use typedef'ed arrays as map values

Convert few tests that couldn't use typedef'ed arrays due to kernel bug.

Signed-off-by: Andrii Nakryiko <andriin@...com>
---
 tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c     | 3 ++-
 tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c | 3 +--
 tools/testing/selftests/bpf/progs/test_stacktrace_map.c      | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
index d06b47a09097..33254b771384 100644
--- a/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
+++ b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
@@ -47,11 +47,12 @@ struct {
  * issue and avoid complicated C programming massaging.
  * This is an acceptable workaround since there is one entry here.
  */
+typedef __u64 raw_stack_trace_t[2 * MAX_STACK_RAWTP];
 struct {
 	__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
 	__uint(max_entries, 1);
 	__type(key, __u32);
-	__u64 (*value)[2 * MAX_STACK_RAWTP];
+	__type(value, raw_stack_trace_t);
 } rawdata_map SEC(".maps");
 
 SEC("tracepoint/raw_syscalls/sys_enter")
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index bbfc8337b6f0..f5638e26865d 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
@@ -36,8 +36,7 @@ struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
 	__uint(max_entries, 128);
 	__type(key, __u32);
-	/* there seems to be a bug in kernel not handling typedef properly */
-	struct bpf_stack_build_id (*value)[PERF_MAX_STACK_DEPTH];
+	__type(value, stack_trace_t);
 } stack_amap SEC(".maps");
 
 /* taken from /sys/kernel/debug/tracing/events/random/urandom_read/format */
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
index 803c15dc109d..fa0be3e10a10 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
@@ -35,7 +35,7 @@ struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
 	__uint(max_entries, 16384);
 	__type(key, __u32);
-	__u64 (*value)[PERF_MAX_STACK_DEPTH];
+	__type(value, stack_trace_t);
 } stack_amap SEC(".maps");
 
 /* taken from /sys/kernel/debug/tracing/events/sched/sched_switch/format */
-- 
2.17.1