Release 4.16 samples/bpf/tracex6_kern.c
#include <linux/ptrace.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include "bpf_helpers.h"
struct bpf_map_def SEC("maps") counters = {
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(u32),
.max_entries = 64,
};
struct bpf_map_def SEC("maps") values = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(int),
.value_size = sizeof(u64),
.max_entries = 64,
};
struct bpf_map_def SEC("maps") values2 = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(int),
.value_size = sizeof(struct bpf_perf_event_value),
.max_entries = 64,
};
SEC("kprobe/htab_map_get_next_key")
int bpf_prog1(struct pt_regs *ctx)
{
u32 key = bpf_get_smp_processor_id();
u64 count, *val;
s64 error;
count = bpf_perf_event_read(&counters, key);
error = (s64)count;
if (error <= -2 && error >= -22)
return 0;
val = bpf_map_lookup_elem(&values, &key);
if (val)
*val = count;
else
bpf_map_update_elem(&values, &key, &count, BPF_NOEXIST);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Teng Qin | 57 | 60.00% | 1 | 50.00% |
Xia Kaixu | 38 | 40.00% | 1 | 50.00% |
Total | 95 | 100.00% | 2 | 100.00% |
SEC("kprobe/htab_map_lookup_elem")
int bpf_prog2(struct pt_regs *ctx)
{
u32 key = bpf_get_smp_processor_id();
struct bpf_perf_event_value *val, buf;
int error;
error = bpf_perf_event_read_value(&counters, key, &buf, sizeof(buf));
if (error)
return 0;
val = bpf_map_lookup_elem(&values2, &key);
if (val)
*val = buf;
else
bpf_map_update_elem(&values2, &key, &buf, BPF_NOEXIST);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Yonghong Song | 89 | 100.00% | 1 | 100.00% |
Total | 89 | 100.00% | 1 | 100.00% |
char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Yonghong Song | 130 | 39.16% | 1 | 25.00% |
Xia Kaixu | 106 | 31.93% | 2 | 50.00% |
Teng Qin | 96 | 28.92% | 1 | 25.00% |
Total | 332 | 100.00% | 4 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.