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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-10-03 21:02:11 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-10-05 18:03:12 -0700 |
| commit | a53ba15d81995868651dd28a85d8045aef3d4e20 (patch) | |
| tree | 7039bc769c81e37de5dec53fea25e8286e4dfdb9 /tools/testing/selftests/bpf/progs | |
| parent | bpf: Add loop test case with 32 bit reg comparison against 0 (diff) | |
| download | linux-dev-a53ba15d81995868651dd28a85d8045aef3d4e20.tar.xz linux-dev-a53ba15d81995868651dd28a85d8045aef3d4e20.zip | |
libbpf: Fix BTF-defined map's __type macro handling of arrays
Due to a quirky C syntax of declaring pointers to array or function
prototype, existing __type() macro doesn't work with map key/value types
that are array or function prototype. One has to create a typedef first
and use it to specify key/value type for a BPF map. By using typeof(),
pointer to type is now handled uniformly for all kinds of types. Convert
one of self-tests as a demonstration.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191004040211.2434033-1-andriin@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c | 3 |
1 files changed, 1 insertions, 2 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 f8ffa3f3d44b..6cc4479ac9df 100644 --- a/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c +++ b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c @@ -47,12 +47,11 @@ 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); - __type(value, raw_stack_trace_t); + __type(value, __u64[2 * MAX_STACK_RAWTP]); } rawdata_map SEC(".maps"); SEC("raw_tracepoint/sys_enter") |