Andi, I am talking about the if statement. I don't know why it would
happen that nothing got measured. I am guessing you saw it happen.
May be we can add a comment in the patch that it is possible that all
counter values are zero and therefore we need that if statement.
--
Nilay
On 1 June 2016 at 09:56, Andi Kleen <a...@linux.intel.com> wrote:
> On Wed, Jun 01, 2016 at 09:50:07AM -0500, Nilay Vaish wrote:
>> On 24 May 2016 at 14:52, Andi Kleen <a...@firstfloor.org> wrote:
>> > +static double td_be_bound(int ctx, int cpu)
>> > +{
>> > + double sum = (td_fe_bound(ctx, cpu) +
>> > + td_bad_spec(ctx, cpu) +
>> > + td_retiring(ctx, cpu));
>> > + if (sum == 0)
>> > + return 0;
>> > + return sanitize_val(1.0 - sum);
>> > +}
>> > +
>>
>> Can you explain why we need the check on sum?
>
> You mean the if statement?
>
> Otherwise if nothing was measured it would always report everything backend
> bound,
> which wouldn't be correct.
>
> -Andi
>
> --
> a...@linux.intel.com -- Speaking for myself only
