Re: [patch 07/11] x86/perf/uncore: Track packages not per cpu data

[Andi Kleen]

Stephane Eranian <eranian@xxxxxxxxxx> writes:

>>
> Let's assume  you have a system with 48 cpus with HT on, then
> you have  2 processor sockets, which is correct. But then you further
> assume that  topology_physical_package_id() will return 0 or 1 in this case.
> In other words, that physical id are always assigned from 0 to N in a contiguous
> manner.
>
> Do we know for sure that this is always the case for all Intel systems
> and that no
> weird BIOS is assigning random numbers for phys_proc_id?

I don't believe that is a safe assumption.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only