Re: [PATCH] HPET RTC emulation: add watchdog timer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Andi Kleen wrote:
> Clemens Ladisch <[email protected]> wrote:
> > Andi Kleen wrote:
> > > Clemens Ladisch wrote:
> > > > To prevent the emulated RTC timer from stopping when
> > > > interrupts are disabled for too long, implement the watchdog
> > > > timer to restart it when needed.
> > >
> > > The interrupt handler should just read the time (it likely
> > > has to do that anyways)
> >
> > Not in the current implementation.
>
> The standard HPET interrupt in x86-64 does this already at least.

But it's slower than just doing a mod_timer which the RTC code does
_anyway_, so we could just as well use it.  Especially as the watchdog
timer isn't actually expected to run in normal circumstances.


Clemens

-
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]
  Powered by Linux