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1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */3 4#include "vmlinux.h"5#include "bpf_tracing_net.h"6#include <bpf/bpf_tracing.h>7#include <bpf/bpf_helpers.h>8 9long create_errs = 0;10long create_cnts = 0;11long kmalloc_cnts = 0;12__u32 bench_pid = 0;13 14struct storage {15 __u8 data[64];16};17 18struct {19 __uint(type, BPF_MAP_TYPE_SK_STORAGE);20 __uint(map_flags, BPF_F_NO_PREALLOC);21 __type(key, int);22 __type(value, struct storage);23} sk_storage_map SEC(".maps");24 25struct {26 __uint(type, BPF_MAP_TYPE_TASK_STORAGE);27 __uint(map_flags, BPF_F_NO_PREALLOC);28 __type(key, int);29 __type(value, struct storage);30} task_storage_map SEC(".maps");31 32SEC("raw_tp/kmalloc")33int BPF_PROG(kmalloc, unsigned long call_site, const void *ptr,34 size_t bytes_req, size_t bytes_alloc, gfp_t gfp_flags,35 int node)36{37 __sync_fetch_and_add(&kmalloc_cnts, 1);38 39 return 0;40}41 42SEC("tp_btf/sched_process_fork")43int BPF_PROG(sched_process_fork, struct task_struct *parent, struct task_struct *child)44{45 struct storage *stg;46 47 if (parent->tgid != bench_pid)48 return 0;49 50 stg = bpf_task_storage_get(&task_storage_map, child, NULL,51 BPF_LOCAL_STORAGE_GET_F_CREATE);52 if (stg)53 __sync_fetch_and_add(&create_cnts, 1);54 else55 __sync_fetch_and_add(&create_errs, 1);56 57 return 0;58}59 60SEC("lsm.s/socket_post_create")61int BPF_PROG(socket_post_create, struct socket *sock, int family, int type,62 int protocol, int kern)63{64 struct sock *sk = sock->sk;65 struct storage *stg;66 __u32 pid;67 68 pid = bpf_get_current_pid_tgid() >> 32;69 if (pid != bench_pid || !sk)70 return 0;71 72 stg = bpf_sk_storage_get(&sk_storage_map, sk, NULL,73 BPF_LOCAL_STORAGE_GET_F_CREATE);74 75 if (stg)76 __sync_fetch_and_add(&create_cnts, 1);77 else78 __sync_fetch_and_add(&create_errs, 1);79 80 return 0;81}82 83char __license[] SEC("license") = "GPL";84