> You need to use spin_lock_irqsave() from process context.
> From the interrupt handler itself it doesn't hurt, but it
> shouldn't matter much since interrupt handlers should not
> get preempted.
but interrupt handlers run in interrupt context when interrupts are already
disabled. Is that correct ?
AFAIK the interrupt that the handler is serving is guaranteed to be
disabled on all the processors.
In addition, if the interrupt was registered with SA_INTERRUPT flag,
all the interrupts will be disabled on the current processor.
Regards,
Rajat
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
