On Mon, 20 Oct 2014 10:48:13 +0200 Peter Zijlstra <pet...@infradead.org> wrote:
> > - cpumsf_pmu_event_idx is the same as power_pmu_event_idx. > > Oh cute, lets ask the s390 people, do you guys have a userspace > instruction to read the actual counter value? The "extract cpu counter" ECCTR instruction can be authorized to be used in user-space with a bit in CR0. With the current code this bit is not set, the cpu measurement facility is not usable in user space without a patch to the kernel. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
