Hi Stephane, Attached is a patch that implements the settings for POWER8. It is tested and results mirror those from using the perf tool. u/k/h are now supported for both generic ‘perf’ events and PMU events. Thanks very much for your help on this!
In digging through the kernel perf code, I was unable to decipher (in the 30 minutes I spent) whether or now Power7 or other members of the family have this support. Just as well, since I can’t test them. @IBM folks, you can simply add a .supported_plm = POWER_PLM to the pfmlib_power?.c emu descriptor to test U/K counting. If it supports hypervisor (or others), see pfmlib_power_priv.h for the definition of POWER8_PLM.
power8-plms.patch
Description: Binary data
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