Linux Memory - Active kernel mappings from virtual to physical

Question

Is there a way to see active mappings from virtual to physical memory in Linux?

To make simpler, let's assume we are on 32 bit system

Kernel Virtual Addresses

>>> 0xffffffff-0xc0000000
1073741823

Userspace Virtual Addresses

>>> 0xc0000000-0x00000000
3221225472

I want to scan Kernel Virtual Addresses for task_struct structure and was wondering if I have to scan the whole range or there is somehow a mapping which kernel virtual addresses are currently used?

Update 1:

How can I read it programatically to view all active mappings?

As I said I want to spare me going though the whole address space:

My code so far:

Here I try to scan the whole address space to look for task_struct and find the process name and PID (based on struct offsets)

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdbool.h>

void main()
{
    int fd;
    char *retp = NULL;

    fd = open("/dev/mem", O_RDWR|O_SYNC);
    for(int z=0;z<=0xffffffff;z=z+4096)
    {

        retp = mmap(NULL, 4096, PROT_READ, MAP_PRIVATE, fd,z);



        if (retp == MAP_FAILED)
        {
            printf("FAILED\n");
        }
        else
        {
            printf("PASSED\n");



            char task_struct[5760];
            int pid;


            for(int i=0;i<4096;i++)
            {
                memcpy(&task_struct,retp+i,5760);
                memcpy(&pid,task_struct+768,sizeof(int));
                if(strcmp(task_struct+996,"bash")==0)

                    printf("addr:%p\tname:%s\tpid:%i\n",retp+i,task_struct+996,pid);
            }
            munmap(retp,4096);

        }
    }
    close(fd);
}