[PATCH 24/29] perf bpf: Add bpf_map() helper

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

To make the declaration of maps more compact, the following patches will
make use of it.

Standardizing on it will allow to add the BTF details, i.e.
BPF_ANNOTATE_KV_PAIR() (tools/testing/selftests/bpf/bpf_helpers.h)
transparently.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Luis ClÃudio GonÃalves <lclaudio@xxxxxxxxxx>
Cc: Martin KaFai Lau <kafai@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: Yonghong Song <yhs@xxxxxx>
Link: https://lkml.kernel.org/n/tip-h3q9rxxkbzetgnbro5rclqft@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/include/bpf/bpf.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h
index e667577207dc..0482028c1d11 100644
--- a/tools/perf/include/bpf/bpf.h
+++ b/tools/perf/include/bpf/bpf.h
@@ -18,6 +18,14 @@ struct bpf_map {
         unsigned int numa_node;
 };
 
+#define bpf_map(name, _type, type_key, type_val, _max_entries)	\
+struct bpf_map SEC("maps") name = {				\
+	.type	     = BPF_MAP_TYPE_##_type,			\
+	.key_size    = sizeof(type_key),			\
+	.value_size  = sizeof(type_val),			\
+	.max_entries = _max_entries,				\
+}
+
 /*
  * FIXME: this should receive .max_entries as a parameter, as careful
  *	  tuning of these limits is needed to avoid hitting limits that
-- 
2.20.1