On Middeweken 18 Mai 2005 16:45, Nathan Lynch wrote:
>
> > A semaphore would also be the wrong approach since we don't want
> > processes to block but instead to fail opening the watchdog twice.
>
> I should have been more explicit. What I had in mind was using
> down_trylock and returning -EBUSY if it failed.
Well, that's also pointless. If the only operations you ever do
on a semaphore are down_trylock() and up(), you end up using
only the atomic variable in there while wasting a few bytes of
extra memory for storing the wait queue head ;-)
Arnd <><
-
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]
