Messages in this thread | | | Subject | Re: [PATCH 04/10] perf, x86: Making hardware events translations available in sysfs | From | Peter Zijlstra <> | Date | Wed, 04 Jul 2012 12:22:10 +0200 |
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On Wed, 2012-07-04 at 00:00 +0200, Jiri Olsa wrote: > +#define PMU_EVENTS_ATTR_CONFIG(_name, _id) \ > +static ssize_t \ > +_name##_show(struct device *dev, \ > + struct device_attribute *attr, \ > + char *page) \ > +{ \ > + u64 val = x86_pmu.event_map(_id); \ > + BUILD_BUG_ON(_id >= PERF_COUNT_HW_MAX); \ > + return sprintf(page, "config=0x%llx\n", val); \ > +} \
How about something like:
u64 config = x86_pmu.event_map(_id); u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT) | (config & AMD64_EVENTSEL_EVENT) >> 24; u64 umask = (config & ARCH_PERFMON_EVENTSEL_UMASK) >> 8;
WARN_ON_ONCE(config & (ARCH_PERFMON_EVENTSEL_INV | ARCH_PERFMON_EVENTSEL_CMASK));
sprintf("event=0x%02llx,umask=0x%02llx\n", event, umask);
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