Hi!
On 20:27 Wed 08 Jun , limp wrote:
> Hi all,
>
> I am trying to hard lockup my Linux system (Debian) for evaluating some
> crash report mechanism.
...
> int init_module(void)
> {
> unsigned long flags;
> static spinlock_t lock;
> spin_lock_init(&lock);
> spin_lock_irqsave(&lock, flags);
> printk(KERN_INFO "Hello, world\n");
> spin_lock_irqsave(&lock, flags);
> //spin_lock(&lock);
> printk(KERN_INFO "Hello, world\n");
> return 0;
> }
Do you have SMP? On non-smp spin_lock_irqsave is mapped to local_irq_save().
Maybe try this:
int init_module(void)
{
unsigned long iflags;
local_irq_save(iflags);
while (1) {
}
local_irq_restore(iflags);
return 0;
}
-Michi
--
programing a layer 3+4 network protocol for mesh networks
see http://michaelblizek.twilightparadox.com
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