Messages in this thread | | | Date | Fri, 15 Jun 2012 09:29:04 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 1/6] perf, x86: Making hardware events tranlations sysfs available |
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On Thu, Jun 14, 2012 at 11:36:51PM +0200, Stephane Eranian wrote: > 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.
humm... right :)
how about the term name 'event=...', could I always assume it's 'event', or do we want some arch specific connection for that?
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