| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 3 | * |
| 4 | * Copyright IBM Corp. 2008 |
| 5 | * |
| 6 | * Authors: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> |
| 7 | */ |
| 8 | |
| 9 | #ifndef __POWERPC_KVM_EXITTIMING_H__ |
| 10 | #define __POWERPC_KVM_EXITTIMING_H__ |
| 11 | |
| 12 | #include <linux/kvm_host.h> |
| 13 | #include <asm/kvm_host.h> |
| 14 | |
| 15 | #ifdef CONFIG_KVM_EXIT_TIMING |
| 16 | void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu); |
| 17 | void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu); |
| 18 | void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, unsigned int id); |
| 19 | void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu); |
| 20 | |
| 21 | static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) |
| 22 | { |
| 23 | vcpu->arch.last_exit_type = type; |
| 24 | } |
| 25 | |
| 26 | #else |
| 27 | /* if exit timing is not configured there is no need to build the c file */ |
| 28 | static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {} |
| 29 | static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {} |
| 30 | static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, |
| 31 | unsigned int id) {} |
| 32 | static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {} |
| 33 | static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) {} |
| 34 | #endif /* CONFIG_KVM_EXIT_TIMING */ |
| 35 | |
| 36 | /* account the exit in kvm_stats */ |
| 37 | static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type) |
| 38 | { |
| 39 | /* type has to be known at build time for optimization */ |
| 40 | |
| 41 | /* The BUILD_BUG_ON below breaks in funny ways, commented out |
| 42 | * for now ... -BenH |
| 43 | BUILD_BUG_ON(!__builtin_constant_p(type)); |
| 44 | */ |
| 45 | switch (type) { |
| 46 | case EXT_INTR_EXITS: |
| 47 | vcpu->stat.ext_intr_exits++; |
| 48 | break; |
| 49 | case DEC_EXITS: |
| 50 | vcpu->stat.dec_exits++; |
| 51 | break; |
| 52 | case EMULATED_INST_EXITS: |
| 53 | vcpu->stat.emulated_inst_exits++; |
| 54 | break; |
| 55 | case DSI_EXITS: |
| 56 | vcpu->stat.dsi_exits++; |
| 57 | break; |
| 58 | case ISI_EXITS: |
| 59 | vcpu->stat.isi_exits++; |
| 60 | break; |
| 61 | case SYSCALL_EXITS: |
| 62 | vcpu->stat.syscall_exits++; |
| 63 | break; |
| 64 | case DTLB_REAL_MISS_EXITS: |
| 65 | vcpu->stat.dtlb_real_miss_exits++; |
| 66 | break; |
| 67 | case DTLB_VIRT_MISS_EXITS: |
| 68 | vcpu->stat.dtlb_virt_miss_exits++; |
| 69 | break; |
| 70 | case MMIO_EXITS: |
| 71 | vcpu->stat.mmio_exits++; |
| 72 | break; |
| 73 | case ITLB_REAL_MISS_EXITS: |
| 74 | vcpu->stat.itlb_real_miss_exits++; |
| 75 | break; |
| 76 | case ITLB_VIRT_MISS_EXITS: |
| 77 | vcpu->stat.itlb_virt_miss_exits++; |
| 78 | break; |
| 79 | case SIGNAL_EXITS: |
| 80 | vcpu->stat.signal_exits++; |
| 81 | break; |
| 82 | case DBELL_EXITS: |
| 83 | vcpu->stat.dbell_exits++; |
| 84 | break; |
| 85 | case GDBELL_EXITS: |
| 86 | vcpu->stat.gdbell_exits++; |
| 87 | break; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /* wrapper to set exit time and account for it in kvm_stats */ |
| 92 | static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type) |
| 93 | { |
| 94 | kvmppc_set_exit_type(vcpu, type); |
| 95 | kvmppc_account_exit_stat(vcpu, type); |
| 96 | } |
| 97 | |
| 98 | #endif /* __POWERPC_KVM_EXITTIMING_H__ */ |