diff options
Diffstat (limited to 'include/kvm/arm_pmu.h')
| -rw-r--r-- | include/kvm/arm_pmu.h | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index 6db030439e29..c0b868ce6a8f 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -13,27 +13,45 @@ #define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1) #define ARMV8_PMU_MAX_COUNTER_PAIRS ((ARMV8_PMU_MAX_COUNTERS + 1) >> 1) -#ifdef CONFIG_KVM_ARM_PMU +#ifdef CONFIG_HW_PERF_EVENTS struct kvm_pmc { u8 idx; /* index into the pmu->pmc array */ struct perf_event *perf_event; }; +struct kvm_pmu_events { + u32 events_host; + u32 events_guest; +}; + struct kvm_pmu { - int irq_num; + struct irq_work overflow_work; + struct kvm_pmu_events events; struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS]; DECLARE_BITMAP(chained, ARMV8_PMU_MAX_COUNTER_PAIRS); - bool ready; + int irq_num; bool created; bool irq_level; }; -#define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready) +struct arm_pmu_entry { + struct list_head entry; + struct arm_pmu *arm_pmu; +}; + +DECLARE_STATIC_KEY_FALSE(kvm_arm_pmu_available); + +static __always_inline bool kvm_arm_support_pmu_v3(void) +{ + return static_branch_likely(&kvm_arm_pmu_available); +} + #define kvm_arm_pmu_irq_initialized(v) ((v)->arch.pmu.irq_num >= VGIC_NR_SGIS) u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx); void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val); u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu); +u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1); void kvm_pmu_vcpu_init(struct kvm_vcpu *vcpu); void kvm_pmu_vcpu_reset(struct kvm_vcpu *vcpu); void kvm_pmu_vcpu_destroy(struct kvm_vcpu *vcpu); @@ -47,7 +65,6 @@ void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val); void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val); void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data, u64 select_idx); -bool kvm_arm_support_pmu_v3(void); int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu, @@ -55,11 +72,34 @@ int kvm_arm_pmu_v3_get_attr(struct kvm_vcpu *vcpu, int kvm_arm_pmu_v3_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu); + +struct kvm_pmu_events *kvm_get_pmu_events(void); +void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu); +void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu); + +#define kvm_vcpu_has_pmu(vcpu) \ + (test_bit(KVM_ARM_VCPU_PMU_V3, (vcpu)->arch.features)) + +/* + * Updates the vcpu's view of the pmu events for this cpu. + * Must be called before every vcpu run after disabling interrupts, to ensure + * that an interrupt cannot fire and update the structure. + */ +#define kvm_pmu_update_vcpu_events(vcpu) \ + do { \ + if (!has_vhe() && kvm_vcpu_has_pmu(vcpu)) \ + vcpu->arch.pmu.events = *kvm_get_pmu_events(); \ + } while (0) + #else struct kvm_pmu { }; -#define kvm_arm_pmu_v3_ready(v) (false) +static inline bool kvm_arm_support_pmu_v3(void) +{ + return false; +} + #define kvm_arm_pmu_irq_initialized(v) (false) static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx) @@ -88,7 +128,6 @@ static inline void kvm_pmu_software_increment(struct kvm_vcpu *vcpu, u64 val) {} static inline void kvm_pmu_handle_pmcr(struct kvm_vcpu *vcpu, u64 val) {} static inline void kvm_pmu_set_counter_event_type(struct kvm_vcpu *vcpu, u64 data, u64 select_idx) {} -static inline bool kvm_arm_support_pmu_v3(void) { return false; } static inline int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) { @@ -108,6 +147,16 @@ static inline int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu) { return 0; } +static inline u64 kvm_pmu_get_pmceid(struct kvm_vcpu *vcpu, bool pmceid1) +{ + return 0; +} + +#define kvm_vcpu_has_pmu(vcpu) ({ false; }) +static inline void kvm_pmu_update_vcpu_events(struct kvm_vcpu *vcpu) {} +static inline void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu) {} +static inline void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu) {} + #endif #endif |