Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <linux/version.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <uapi/linux/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <bpf/bpf_helpers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	__uint(key_size, sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	__uint(value_size, sizeof(u32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	__uint(max_entries, 64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) } counters SEC(".maps");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	__uint(type, BPF_MAP_TYPE_HASH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	__type(key, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	__type(value, u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	__uint(max_entries, 64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) } values SEC(".maps");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	__uint(type, BPF_MAP_TYPE_HASH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	__type(key, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	__type(value, struct bpf_perf_event_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	__uint(max_entries, 64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) } values2 SEC(".maps");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) SEC("kprobe/htab_map_get_next_key")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int bpf_prog1(struct pt_regs *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	u32 key = bpf_get_smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	u64 count, *val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	s64 error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	count = bpf_perf_event_read(&counters, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	error = (s64)count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (error <= -2 && error >= -22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	val = bpf_map_lookup_elem(&values, &key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	if (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		*val = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		bpf_map_update_elem(&values, &key, &count, BPF_NOEXIST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) SEC("kprobe/htab_map_lookup_elem")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int bpf_prog2(struct pt_regs *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	u32 key = bpf_get_smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	struct bpf_perf_event_value *val, buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	error = bpf_perf_event_read_value(&counters, key, &buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	val = bpf_map_lookup_elem(&values2, &key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	if (val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 		*val = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		bpf_map_update_elem(&values2, &key, &buf, BPF_NOEXIST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) char _license[] SEC("license") = "GPL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u32 _version SEC("version") = LINUX_VERSION_CODE;