Commit | Line | Data |
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5ed3ccbd | 1 | #include <linux/ptrace.h> |
47efb302 KX |
2 | #include <linux/version.h> |
3 | #include <uapi/linux/bpf.h> | |
4 | #include "bpf_helpers.h" | |
5 | ||
6 | struct bpf_map_def SEC("maps") my_map = { | |
7 | .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, | |
8 | .key_size = sizeof(int), | |
9 | .value_size = sizeof(u32), | |
10 | .max_entries = 32, | |
11 | }; | |
12 | ||
13 | SEC("kprobe/sys_write") | |
14 | int bpf_prog1(struct pt_regs *ctx) | |
15 | { | |
16 | u64 count; | |
17 | u32 key = bpf_get_smp_processor_id(); | |
18 | char fmt[] = "CPU-%d %llu\n"; | |
19 | ||
20 | count = bpf_perf_event_read(&my_map, key); | |
21 | bpf_trace_printk(fmt, sizeof(fmt), key, count); | |
22 | ||
23 | return 0; | |
24 | } | |
25 | ||
26 | char _license[] SEC("license") = "GPL"; | |
27 | u32 _version SEC("version") = LINUX_VERSION_CODE; |