reset_proc_memory.c

get.c

#include <sys/time.h>
#include <sys/resource.h>
#include <stdio.h>

int main(){
    struct rusage usage;
    while (1) {
        getrusage(RUSAGE_SELF, &usage);
        printf("%lld\n", usage.ru_maxrss);
        fflush(NULL);
        sleep(5);
    }
}

Makefile

obj-m += reset_proc_memory.o
KDIR ?= /lib/modules/$(shell uname -r)/build

all:
	make -C $(KDIR) M=$(PWD) modules

clean:
	make -C $(KDIR) M=$(PWD) clean

reset_proc_memory.c

#include <linux/module.h>
#include <linux/kernel.h>

#include <linux/sched/signal.h>

void reset(void)
{
        struct task_struct* task;
        for_each_process(task) {
                // TODO lock
                task->signal->cmaxrss = 0;
                task->signal->maxrss = 0;
        }
}

int init_module(void)
{
        reset();
        return 0;
}