> The only thing I am sure of is that interrupts are simply not disabled.
They are only disabled on the local CPU, they could still occur on other
CPUs. This is not different from 2.2.
>
> I've also looked at some other scsi drivers that are disabling interrupts
> and they appear to be making similar calls to spin_lock_irqsave.
>
> Does anyone have any suggestions for debugging this? Is there a call that
> can be made to find out if interrupts are actually disabled?
unsigned flag;
asm volatile("pushfl ; popfl %0" : "=r" (flag));
printk(KERN_DEBUG "local interrupts are %s\n", (flag & (1<<9)) ? "enabled" : "disabled");
-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Dec 23 2000 - 21:00:23 EST