On Tue, Mar 29, 2016 at 09:31:58AM +0200, Peter Zijlstra wrote:
> This will not in fact work for Intel, nor if I manage to one day
> randomize our CPU numbers on AMD.
Oh, I know why. I have this 64 CPUs box here:
$ grep "core id" /proc/cpuinfo | uniq
core id : 0
core id : 8
core i
On Mon, Mar 28, 2016 at 11:29:52AM +0200, Borislav Petkov wrote:
> I think you want something like this: iterate over each core and put one
> of them into the mask.
>
> core = -1;
>
> for_each_online_cpu(cpu) {
> this_core = topology_core_id(cpu);
>
> if (
On Mon, Mar 28, 2016 at 11:29:52AM +0200, Borislav Petkov wrote:
> On Mon, Mar 28, 2016 at 01:32:12PM +0800, Huang Rui wrote:
> > +
> > + get_online_cpus();
> > + this_cpu = get_cpu();
>
> What now?
>
> get_online_cpus() is enough.
>
Will remove get_cpu().
> > +
> > + /*
> > +* Choos
On Mon, Mar 28, 2016 at 01:32:12PM +0800, Huang Rui wrote:
> This patch adds a member in fam15h_power_data which specifies the
> compute unit accumulated power. It adds do_read_registers_on_cu to do
> all the read to all MSRs and run it on one of the online cores on each
> compute unit with smp_cal
This patch adds a member in fam15h_power_data which specifies the
compute unit accumulated power. It adds do_read_registers_on_cu to do
all the read to all MSRs and run it on one of the online cores on each
compute unit with smp_call_function_many(). This behavior can decrease
IPI numbers.
Suggest
