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