Re: FOR REVIEW: New x86-64 vsyscall vgetcpu()

From: Chase Venters <>
Date: 2006-06-17 07:04:36
On Fri, 16 Jun 2006, Zoltan Menyhart wrote:

> Jes Sorensen wrote:
>>  Zoltan Menyhart wrote:
>> > Just to make sure I understand it correctly...
>> > Assuming I have allocated per CPU data (numa control, etc.) pointed at 
>> > by:
>>  I think you misunderstood - vgetcpu is for userland usage, not within
>>  the kernel.
>>  Cheers,
>>  Jes
> I did understand it as a user land stuff.
> This is why I want to map the current task structure into the user space.
> In user code, we could see the actual value of the 
> "current->thread_info.cpu".
> My "#define current ((struct task_struct *) 0x...)" is not the same as
> the kernel's one.

I think it's probably best to leave most of the stuff in task_struct 
private (ie, mapped in kernel only).

> Thanks,
> Zoltan

To unsubscribe from this list: send the line "unsubscribe linux-ia64" in
the body of a message to
More majordomo info at
Received on Sat Jun 17 07:05:13 2006

This archive was generated by hypermail 2.1.8 : 2006-06-17 07:05:23 EST