diff options
Diffstat (limited to 'arch/powerpc/kvm/Kconfig')
| -rw-r--r-- | arch/powerpc/kvm/Kconfig | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 73f8277df7d1..191347f44731 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -130,10 +130,22 @@ config KVM_BOOK3S_64_PR config KVM_BOOK3S_HV_EXIT_TIMING bool +config KVM_BOOK3S_HV_P9_TIMING + bool "Detailed timing for the P9 entry point" + select KVM_BOOK3S_HV_EXIT_TIMING + depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS + help + Calculate time taken for each vcpu in various parts of the + code. The total, minimum and maximum times in nanoseconds + together with the number of executions are reported in debugfs in + kvm/vm#/vcpu#/timings. + + If unsure, say N. + config KVM_BOOK3S_HV_P8_TIMING bool "Detailed timing for hypervisor real-mode code (for POWER8)" select KVM_BOOK3S_HV_EXIT_TIMING - depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS + depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS && !KVM_BOOK3S_HV_P9_TIMING help Calculate time taken for each vcpu in the real-mode guest entry, exit, and interrupt handling code, plus time spent in the guest |