Messages in this thread | | | Subject | Re: [PATCH 2/7] perf: Create a symlink for a PMU | From | Andi Kleen <> | Date | Fri, 25 Jun 2021 08:44:09 -0700 |
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> We have an attribute "caps/pmu_name" for the core PMU. Maybe we should > add it for uncore PMU as well. For example, > > $ cat /sys/devices/uncore_type_0_0/caps/pmu_name > cha_0 > > Userspace tool can get clues about what type_0_0 is.
It would break all the old tools, but I suppose it could work for updated tools.
It isn't only perf that is parsing this, but some other libraries too. They all would need to be updated too.
I think I still prefer the symlink. It would just work and keep full compatibility.
But yes maybe there is no choice.
-Andi
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