Come configurare una richiamata periodica del timer in un modulo del kernel Linux

Timer ad alta risoluzione del kernel Linux hrtimer è un'opzione.http://lwn.net/Articles/167897/

Ecco cosa faccio:

#include <linux/interrupt.h>
#include <linux/hrtimer.h>
#include <linux/sched.h>

static struct hrtimer htimer;
static ktime_t kt_periode;

static void timer_init(void)
{
    kt_periode = ktime_set(0, 104167); //seconds,nanoseconds
    hrtimer_init (& htimer, CLOCK_REALTIME, HRTIMER_MODE_REL);
    htimer.function = timer_function;
    hrtimer_start(& htimer, kt_periode, HRTIMER_MODE_REL);
}

static void timer_cleanup(void)
{
    hrtimer_cancel(& htimer);
}

static enum hrtimer_restart timer_function(struct hrtimer * timer)
{
    // @Do your work here. 

    hrtimer_forward_now(timer, kt_periode);

    return HRTIMER_RESTART;
}