'perf kvm stat report/record' generates a statistical analysis of KVM events and can be used to analyze guest exit reasons. This series tries to add stat support on arm64 (Port perf-kvm-stat to arm64 - this is already supported on x86). "record" enables recording of two pair of tracepoints: - "kvm:kvm_entry" and "kvm:kvm_exit" - "kvm:kvm_trap_enter" and "kvm:kvm_trap_exit" "report" reports statistical analysis of guest exit&trap events. To record kvm events on the host: # perf kvm stat record -a To report kvm VM EXIT events: # perf kvm stat report --event=vmexit To report kvm VM TRAP (synchronous exceptions) events: # perf kvm stat report --event=trap More information can be found at tools/perf/Documentation/perf-kvm.txt. * Patch 1-2 touch KVM/ARM side, with #1 is cleanup and #2 is preparation for perf-kvm-stat support. * Patch 3-5 touch perf side. * Patch 3 adds support for get_cpuid() function on arm64. *RFC!* * Patch 4 adds support for perf-kvm-stat on arm64, with VM-EXIT events. * Patch 5 adds support to report TRAP-EVENT events. Any suggestions, comments and test results will be appreciated. Thanks, zenghui --- Zenghui Yu (5): KVM: arm/arm64: Remove kvm_mmio_emulate tracepoint KVM: arm/arm64: Adjust entry/exit and trap related tracepoints perf tools arm64: Add support for get_cpuid() function perf,kvm/arm64: Add stat support on arm64 perf,kvm/arm64: perf-kvm-stat to report VM TRAP arch/arm64/kvm/handle_exit.c | 3 + arch/arm64/kvm/trace.h | 35 +++++++ tools/perf/arch/arm64/Makefile | 2 + tools/perf/arch/arm64/util/Build | 1 + tools/perf/arch/arm64/util/aarch64_guest_exits.h | 91 +++++++++++++++++ tools/perf/arch/arm64/util/header.c | 74 +++++++++----- tools/perf/arch/arm64/util/kvm-stat.c | 125 +++++++++++++++++++++++ virt/kvm/arm/arm.c | 4 +- virt/kvm/arm/trace.h | 42 ++------ 9 files changed, 317 insertions(+), 60 deletions(-) create mode 100644 tools/perf/arch/arm64/util/aarch64_guest_exits.h create mode 100644 tools/perf/arch/arm64/util/kvm-stat.c -- 1.8.3.1
