mirror of https://gitee.com/openkylin/linux.git
28 lines
611 B
C
28 lines
611 B
C
#include <linux/ptrace.h>
|
|
#include <linux/version.h>
|
|
#include <uapi/linux/bpf.h>
|
|
#include "bpf_helpers.h"
|
|
|
|
struct bpf_map_def SEC("maps") my_map = {
|
|
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
|
|
.key_size = sizeof(int),
|
|
.value_size = sizeof(u32),
|
|
.max_entries = 32,
|
|
};
|
|
|
|
SEC("kprobe/sys_write")
|
|
int bpf_prog1(struct pt_regs *ctx)
|
|
{
|
|
u64 count;
|
|
u32 key = bpf_get_smp_processor_id();
|
|
char fmt[] = "CPU-%d %llu\n";
|
|
|
|
count = bpf_perf_event_read(&my_map, key);
|
|
bpf_trace_printk(fmt, sizeof(fmt), key, count);
|
|
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|
|
u32 _version SEC("version") = LINUX_VERSION_CODE;
|