From 6f4d2a0b0b1e9a1f7594e666eebad98372901818 Mon Sep 17 00:00:00 2001 From: Andrew Murray Date: Mon, 17 Jun 2019 20:01:02 +0100 Subject: KVM: arm/arm64: Extract duplicated code to own function Let's reduce code duplication by extracting common code to its own function. Signed-off-by: Andrew Murray Reviewed-by: Suzuki K Poulose Signed-off-by: Marc Zyngier --- virt/kvm/arm/pmu.c | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) (limited to 'virt') diff --git a/virt/kvm/arm/pmu.c b/virt/kvm/arm/pmu.c index 99e51ee8fd9e..efdc7f6db6cd 100644 --- a/virt/kvm/arm/pmu.c +++ b/virt/kvm/arm/pmu.c @@ -53,6 +53,19 @@ void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val) __vcpu_sys_reg(vcpu, reg) += (s64)val - kvm_pmu_get_counter_value(vcpu, select_idx); } +/** + * kvm_pmu_release_perf_event - remove the perf event + * @pmc: The PMU counter pointer + */ +static void kvm_pmu_release_perf_event(struct kvm_pmc *pmc) +{ + if (pmc->perf_event) { + perf_event_disable(pmc->perf_event); + perf_event_release_kernel(pmc->perf_event); + pmc->perf_event = NULL; + } +} + /** * kvm_pmu_stop_counter - stop PMU counter * @pmc: The PMU counter pointer @@ -68,9 +81,7 @@ static void kvm_pmu_stop_counter(struct kvm_vcpu *vcpu, struct kvm_pmc *pmc) reg = (pmc->idx == ARMV8_PMU_CYCLE_IDX) ? PMCCNTR_EL0 : PMEVCNTR0_EL0 + pmc->idx; __vcpu_sys_reg(vcpu, reg) = counter; - perf_event_disable(pmc->perf_event); - perf_event_release_kernel(pmc->perf_event); - pmc->perf_event = NULL; + kvm_pmu_release_perf_event(pmc); } } @@ -101,15 +112,8 @@ void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu) int i; struct kvm_pmu *pmu = &vcpu->arch.pmu; - for (i = 0; i < ARMV8_PMU_MAX_COUNTERS; i++) { - struct kvm_pmc *pmc = &pmu->pmc[i]; - - if (pmc->perf_event) { - perf_event_disable(pmc->perf_event); - perf_event_release_kernel(pmc->perf_event); - pmc->perf_event = NULL; - } - } + for (i = 0; i < ARMV8_PMU_MAX_COUNTERS; i++) + kvm_pmu_release_perf_event(&pmu->pmc[i]); } u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu) -- cgit v1.2.3-55-g7522