* Andi Kleen <[email protected]> wrote:
> Chuck Ebbert <[email protected]> writes:
>
> > Use a GDT entry's limit field to store per-cpu data for fast access
> > from userspace, and provide a vsyscall to access the current CPU
> > number stored there.
>
> Just the CPU alone is useless - you want at least the node too in many
> cases. Best you use the prototype I proposed earlier for x86-64.
just the CPU is fine already in many cases [and the node ID derives from
the linear CPU id anyway] - but i agree that in the API we want to
include the node-ID too, for NUMA-aware userspace allocators, etc.
Ingo
-
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]
