kvm powerpc/book3s-apiv2: Introduce kvm-hv specific PMU

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Introduce a new PMU named 'kvm-hv' inside a new module named 'kvm-hv-pmu'
to report Book3s kvm-hv specific performance counters. This will expose
KVM-HV specific performance attributes to user-space via kernel's PMU
infrastructure and would enableusers to monitor active kvm-hv based guests.

The patch creates necessary scaffolding to for the new PMU callbacks and
introduces the new kernel module name 'kvm-hv-pmu' which is built with
CONFIG_KVM_BOOK3S_HV_PMU. The patch doesn't introduce any perf-events yet,
which will be introduced in later patches

Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250416162740.93143-5-vaibhav@linux.ibm.com

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Vaibhav Jain 2025-04-16 21:57:34 +05:30 • committed by Madhavan Srinivasan

parent 1f35ad2b93

commit ff45bf50cc

3 changed files with 153 additions and 0 deletions

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13

arch/powerpc/kvm/Kconfig

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2

arch/powerpc/perf/Makefile

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138

arch/powerpc/perf/kvm-hv-pmu.c

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