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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - samples/bpf/map_perf_test_kern.c
1 /* Copyright (c) 2016 Facebook
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of version 2 of the GNU General Public
5 * License as published by the Free Software Foundation.
7 #include <linux/skbuff.h>
8 #include <linux/netdevice.h>
9 #include <linux/version.h>
10 #include <uapi/linux/bpf.h>
11 #include "bpf_helpers.h"
13 #define MAX_ENTRIES 1000
15 struct bpf_map_def
SEC("maps") hash_map
= {
16 .type
= BPF_MAP_TYPE_HASH
,
17 .key_size
= sizeof(u32
),
18 .value_size
= sizeof(long),
19 .max_entries
= MAX_ENTRIES
,
22 struct bpf_map_def
SEC("maps") lru_hash_map
= {
23 .type
= BPF_MAP_TYPE_LRU_HASH
,
24 .key_size
= sizeof(u32
),
25 .value_size
= sizeof(long),
29 struct bpf_map_def
SEC("maps") percpu_lru_hash_map
= {
30 .type
= BPF_MAP_TYPE_LRU_HASH
,
31 .key_size
= sizeof(u32
),
32 .value_size
= sizeof(long),
34 .map_flags
= BPF_F_NO_COMMON_LRU
,
37 struct bpf_map_def
SEC("maps") percpu_hash_map
= {
38 .type
= BPF_MAP_TYPE_PERCPU_HASH
,
39 .key_size
= sizeof(u32
),
40 .value_size
= sizeof(long),
41 .max_entries
= MAX_ENTRIES
,
44 struct bpf_map_def
SEC("maps") hash_map_alloc
= {
45 .type
= BPF_MAP_TYPE_HASH
,
46 .key_size
= sizeof(u32
),
47 .value_size
= sizeof(long),
48 .max_entries
= MAX_ENTRIES
,
49 .map_flags
= BPF_F_NO_PREALLOC
,
52 struct bpf_map_def
SEC("maps") percpu_hash_map_alloc
= {
53 .type
= BPF_MAP_TYPE_PERCPU_HASH
,
54 .key_size
= sizeof(u32
),
55 .value_size
= sizeof(long),
56 .max_entries
= MAX_ENTRIES
,
57 .map_flags
= BPF_F_NO_PREALLOC
,
60 SEC("kprobe/sys_getuid")
61 int stress_hmap(struct pt_regs
*ctx
)
63 u32 key
= bpf_get_current_pid_tgid();
67 bpf_map_update_elem(&hash_map
, &key
, &init_val
, BPF_ANY
);
68 value
= bpf_map_lookup_elem(&hash_map
, &key
);
70 bpf_map_delete_elem(&hash_map
, &key
);
75 SEC("kprobe/sys_geteuid")
76 int stress_percpu_hmap(struct pt_regs
*ctx
)
78 u32 key
= bpf_get_current_pid_tgid();
82 bpf_map_update_elem(&percpu_hash_map
, &key
, &init_val
, BPF_ANY
);
83 value
= bpf_map_lookup_elem(&percpu_hash_map
, &key
);
85 bpf_map_delete_elem(&percpu_hash_map
, &key
);
88 SEC("kprobe/sys_getgid")
89 int stress_hmap_alloc(struct pt_regs
*ctx
)
91 u32 key
= bpf_get_current_pid_tgid();
95 bpf_map_update_elem(&hash_map_alloc
, &key
, &init_val
, BPF_ANY
);
96 value
= bpf_map_lookup_elem(&hash_map_alloc
, &key
);
98 bpf_map_delete_elem(&hash_map_alloc
, &key
);
102 SEC("kprobe/sys_getegid")
103 int stress_percpu_hmap_alloc(struct pt_regs
*ctx
)
105 u32 key
= bpf_get_current_pid_tgid();
109 bpf_map_update_elem(&percpu_hash_map_alloc
, &key
, &init_val
, BPF_ANY
);
110 value
= bpf_map_lookup_elem(&percpu_hash_map_alloc
, &key
);
112 bpf_map_delete_elem(&percpu_hash_map_alloc
, &key
);
116 SEC("kprobe/sys_getpid")
117 int stress_lru_hmap_alloc(struct pt_regs
*ctx
)
119 u32 key
= bpf_get_prandom_u32();
122 bpf_map_update_elem(&lru_hash_map
, &key
, &val
, BPF_ANY
);
127 SEC("kprobe/sys_getppid")
128 int stress_percpu_lru_hmap_alloc(struct pt_regs
*ctx
)
130 u32 key
= bpf_get_prandom_u32();
133 bpf_map_update_elem(&percpu_lru_hash_map
, &key
, &val
, BPF_ANY
);
138 char _license
[] SEC("license") = "GPL";
139 u32 _version
SEC("version") = LINUX_VERSION_CODE
;