One Hat Cyber Team

Your IP: 216.73.216.144
Server IP: 157.245.143.252
Server: Linux www 6.11.0-9-generic #9-Ubuntu SMP PREEMPT_DYNAMIC Mon Oct 14 13:19:59 UTC 2024 x86_64
Server Software: nginx/1.26.0
PHP Version: 8.3.11
Buat File | Buat Folder

Dir : ~/usr/share/doc/bpfcc-tools/examples/tracing/

View File Name : task_switch.c

#include <uapi/linux/ptrace.h>
#include <linux/sched.h>

struct key_t {
    u32 prev_pid;
    u32 curr_pid;
};

BPF_HASH(stats, struct key_t, u64, 1024);
int count_sched(struct pt_regs *ctx, struct task_struct *prev) {
    struct key_t key = {};
    u64 zero = 0, *val;

    key.curr_pid = bpf_get_current_pid_tgid();
    key.prev_pid = prev->pid;

    // could also use `stats.increment(key);`
    val = stats.lookup_or_try_init(&key, &zero);
    if (val) {
        (*val)++;
    }
    return 0;
}