On Thu, Jan 09, 2014 at 07:57:12PM +0000, Stephen Boyd wrote: > (Adding DT reviewers) > > On 01/09/14 03:04, Will Deacon wrote: > > On Wed, Jan 08, 2014 at 10:59:40PM +0000, Stephen Boyd wrote: > > > >> +static int krait_pmu_init(struct arm_pmu *cpu_pmu) > >> +{ > >> + u32 id = read_cpuid_id() & 0xffffff00; > >> + > >> + armv7pmu_init(cpu_pmu); > >> + cpu_pmu->name = "ARMv7 Krait"; > >> + /* Some early versions of Krait don't support PC write events */ > >> + if (id == 0x511f0400 || id == 0x510f0600) > >> + cpu_pmu->map_event = krait_map_event_no_branch; > > Hmm, I'd really rather this information came via the DT. In fact, you could > > just drop the branch event from your main map_event_function and keep things > > simple. It depends how badly you want to advertise it in perf list :) > > > > Not every version of Krait is missing support for this event, so I'd > like to keep it so things like perf stat show branch counts. How about I > add a bool property to the pmu node indicating that this PMU is missing > support for the PC write events? Something like "no-pc-write"? Perhaps, although I think it should be qualcomm-specific, so something like "qcom,krait-no-pc-write"? Again, I'd be glad to hear something from a DT reviewer on this. Will -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html