1 files changed, 52 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/libarena/src/common.bpf.c b/tools/testing/selftests/bpf/libarena/src/common.bpf.c
new file mode 100644
index 000000000000..50be57213dfb
--- /dev/null
+++ b/tools/testing/selftests/bpf/libarena/src/common.bpf.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: LGPL-2.1 OR BSD-2-Clause
+/* Copyright (c) 2026 Meta Platforms, Inc. and affiliates. */
+#include <libarena/common.h>
+#include <libarena/asan.h>
+#include <libarena/buddy.h>
+
+const volatile u32 zero = 0;
+
+struct buddy __arena buddy;
+
+int arena_fls(__u64 word)
+{
+	if (!word)
+		return 0;
+
+	return 64 - __builtin_clzll(word);
+}
+
+SEC("syscall")
+__weak int arena_get_info(struct arena_get_info_args *args)
+{
+	args->arena_base = arena_base(&arena);
+
+	return 0;
+}
+
+SEC("syscall")
+__weak int arena_alloc_reserve(struct arena_alloc_reserve_args *args)
+{
+	return bpf_arena_reserve_pages(&arena, NULL, args->nr_pages);
+}
+
+SEC("syscall")
+__weak int arena_buddy_reset(void)
+{
+	buddy_destroy(&buddy);
+
+	return buddy_init(&buddy);
+}
+
+__weak void __arena *arena_malloc(size_t size)
+{
+	return buddy_alloc(&buddy, size);
+}
+
+__weak void arena_free(void __arena *ptr)
+{
+	buddy_free(&buddy, ptr);
+}
+
+
+char _license[] SEC("license") = "GPL";