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| author | Andrew Murray <andrew.murray@arm.com> | 2019-06-17 20:01:02 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-07-05 13:56:10 +0100 |
| commit | 6f4d2a0b0b1e9a1f7594e666eebad98372901818 (patch) | |
| tree | e488b33e4a4968eb9559842778ecc0a14d65cf7a /virt/kvm | |
| parent | 418e5ca88cc18b7e9eaafa40eac26397ccd66a71 (diff) | |
| download | linux-6f4d2a0b0b1e9a1f7594e666eebad98372901818.tar.gz linux-6f4d2a0b0b1e9a1f7594e666eebad98372901818.tar.bz2 linux-6f4d2a0b0b1e9a1f7594e666eebad98372901818.zip | |
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 <andrew.murray@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/arm/pmu.c | 28 |
1 files changed, 16 insertions, 12 deletions
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 @@ -54,6 +54,19 @@ void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val) } /** + * 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) |