Messages in this thread | | | Date | Thu, 14 Jun 2012 23:36:51 +0200 | Subject | Re: [PATCH 1/6] perf, x86: Making hardware events tranlations sysfs available | From | Stephane Eranian <> |
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On Thu, Jun 14, 2012 at 11:09 PM, Peter Zijlstra <a.p.zijlstra@chello.nl> wrote: > On Thu, 2012-06-14 at 22:38 +0200, Jiri Olsa wrote: >> Making hardware events tranlations available throught the sysfs. >> Adding 'events' group attribute under the sysfs x86 PMU record >> with attribute/file for each hardware event: >> >> # ls /sys/devices/cpu/events/ >> branch_instructions >> branch_misses >> bus_cycles >> cache_misses >> cache_references >> cycles >> instructions >> ref_cycles >> stalled_cycles_backend >> stalled_cycles_frontend >> >> The file - ID mappings is: >> >> file hw id >> ---------------------------------------------------------------- >> cycles PERF_COUNT_HW_CPU_CYCLES >> instructions PERF_COUNT_HW_INSTRUCTIONS >> cache_references PERF_COUNT_HW_CACHE_REFERENCES >> cache_misses PERF_COUNT_HW_CACHE_MISSES >> branch_instructions PERF_COUNT_HW_BRANCH_INSTRUCTIONS >> branch_misses PERF_COUNT_HW_BRANCH_MISSES >> bus_cycles PERF_COUNT_HW_BUS_CYCLES >> stalled_cycles_frontend PERF_COUNT_HW_STALLED_CYCLES_FRONTEND >> stalled_cycles_backend PERF_COUNT_HW_STALLED_CYCLES_BACKEND >> ref_cycles PERF_COUNT_HW_REF_CPU_CYCLES >> >> Each attribute/file contains HW ID event translation for the currently >> running CPU model >> >> # cat /sys/devices/cpu/events/instructions >> 0xc0 > > Why not have it consistent with the stuff done for uncore where events > read: 'event=0xc0', ie the regular field=value stuff. > Yes, you want that. Because those events may need more than a code. You want full syntax capability. So return a string. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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