Messages in this thread | | | Date | Thu, 4 Aug 2016 17:00:38 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 2/3] perf/core: introduce pmu_event_flags and PMUEF_READ_CPU_PKG |
| |
On Mon, Aug 01, 2016 at 07:44:54PM -0700, David Carrillo-Cisneros wrote: > Introduce the flag PMUEF_READ_CPU_PKG, useful for uncore events, that > allows a PMU to signal the generic perf code that an event is readable > on the current CPU if the event is: > - active in a CPU in the same package as the current CPU (local CPU)
Ok that I get..
> - not active but is attached to a CPU (i.e. event->cpu != -1) in the > same package as the current CPU.
but this, not so much. Why would you want to read an inactive counter?
| |