From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zenghui Yu Subject: [PATCH v1 0/5] perf kvm: Add stat support on arm64 Date: Wed, 12 Jun 2019 09:08:41 +0000 Message-ID: <1560330526-15468-1-git-send-email-yuzenghui@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Cc: christoffer.dall@arm.com, marc.zyngier@arm.com, acme@redhat.com, peterz@infradead.org, mingo@redhat.com, ganapatrao.kulkarni@cavium.com, catalin.marinas@arm.com, will.deacon@arm.com, mark.rutland@arm.com, acme@kernel.org, alexander.shishkin@linux.intel.com, jolsa@redhat.com, namhyung@kernel.org, wanghaibin.wang@huawei.com, xiexiangyou@huawei.com, linuxarm@huawei.com, Zenghui Yu List-Id: linux-perf-users.vger.kernel.org '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