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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
#define BPF_NO_KFUNC_PROTOTYPES
#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_core_read.h>
#include "bpf_experimental.h"
struct {
__uint(type, BPF_MAP_TYPE_ARENA);
__uint(map_flags, BPF_F_MMAPABLE);
__uint(max_entries, 100); /* number of pages */
#ifdef __TARGET_ARCH_arm64
__ulong(map_extra, 0x1ull << 32); /* start of mmap() region */
#else
__ulong(map_extra, 0x1ull << 44); /* start of mmap() region */
#endif
} arena SEC(".maps");
#include "bpf_arena_alloc.h"
#include "bpf_arena_list.h"
struct elem {
struct arena_list_node node;
__u64 value;
};
struct arena_list_head __arena *list_head;
int list_sum;
int cnt;
bool skip = false;
#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
long __arena arena_sum;
int __arena test_val = 1;
struct arena_list_head __arena global_head;
#else
long arena_sum SEC(".addr_space.1");
int test_val SEC(".addr_space.1");
#endif
int zero;
SEC("syscall")
int arena_list_add(void *ctx)
{
#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
__u64 i;
list_head = &global_head;
for (i = zero; i < cnt && can_loop; i++) {
struct elem __arena *n = bpf_alloc(sizeof(*n));
test_val++;
n->value = i;
arena_sum += i;
list_add_head(&n->node, list_head);
}
#else
skip = true;
#endif
return 0;
}
SEC("syscall")
int arena_list_del(void *ctx)
{
#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
struct elem __arena *n;
int sum = 0;
arena_sum = 0;
list_for_each_entry(n, list_head, node) {
sum += n->value;
arena_sum += n->value;
list_del(&n->node);
bpf_free(n);
}
list_sum = sum;
#else
skip = true;
#endif
return 0;
}
char _license[] SEC("license") = "GPL";
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