Re: spinaphore conceptual draft

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

 



Kyle Moffett <[email protected]> writes:

>          if (unlikely(CONFIG_SPINAPHORE_CONTEXT_SWITCH <
>                  ( queued*atomic_get(&sph->hold_time) -
>                    fast_monotonic_count() - start_time

On many architectures (including popular ones like AMD x86-64) 
there is no reliable fast monotonic (1) count unfortunately - except perhaps
jiffies, but that would be far to coarse grained for your purpose.

-Andi

(1) reliable fast monotonic - chose any two instead. 
-
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