Hi
static void some_method()
{
unsigned long expires;
static struct timer_list *timer;
expires = jiffes + 20;
data = 5;
timer->expires = expires;
timer->function = my_function;
timer->data = data;
init_timer(timer); /*initalise timer*/
spin_lock_irqsave(&spinlock, iflags);
spin_unlock_irqrestore(&spinlock, iflags);
return 0;
}
static int __init mod_init( void )
{
printk(KERN_DEBUG "in init..\n");
some_method();
printk(KERN_DEBUG "after some method in init..\n");
return 0;
};
static void __exit mod_exit( void )
{
printk(KERN_DEBUG "bye world...\n");
}
My question is between spin_lock_irqsave() and
spin_unlock_irqrestore() code is supposed to be atomic right?
Now as i have initialised a timer structure in the function.If the
jiffies gets equal to expires in between spinlock() and spinunlock()
will my_function() execute?
What will happen and why?
Am i missing something ?
Any pointers or links shall be appreciated.
thank you
pradeep
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