1/* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> 18 */ 19 20#ifndef __POWERPC_KVM_EXITTIMING_H__ 21#define __POWERPC_KVM_EXITTIMING_H__ 22 23#include <linux/kvm_host.h> 24#include <asm/kvm_host.h> 25 26#ifdef CONFIG_KVM_EXIT_TIMING 27void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu); 28void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu); 29void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, unsigned int id); 30void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu); 31 32static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) 33{ 34 vcpu->arch.last_exit_type = type; 35} 36 37#else 38/* if exit timing is not configured there is no need to build the c file */ 39static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {} 40static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {} 41static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, 42 unsigned int id) {} 43static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {} 44static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) {} 45#endif /* CONFIG_KVM_EXIT_TIMING */ 46 47/* account the exit in kvm_stats */ 48static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type) 49{ 50 /* type has to be known at build time for optimization */ 51 52 /* The BUILD_BUG_ON below breaks in funny ways, commented out 53 * for now ... -BenH 54 BUILD_BUG_ON(!__builtin_constant_p(type)); 55 */ 56 switch (type) { 57 case EXT_INTR_EXITS: 58 vcpu->stat.ext_intr_exits++; 59 break; 60 case DEC_EXITS: 61 vcpu->stat.dec_exits++; 62 break; 63 case EMULATED_INST_EXITS: 64 vcpu->stat.emulated_inst_exits++; 65 break; 66 case DCR_EXITS: 67 vcpu->stat.dcr_exits++; 68 break; 69 case DSI_EXITS: 70 vcpu->stat.dsi_exits++; 71 break; 72 case ISI_EXITS: 73 vcpu->stat.isi_exits++; 74 break; 75 case SYSCALL_EXITS: 76 vcpu->stat.syscall_exits++; 77 break; 78 case DTLB_REAL_MISS_EXITS: 79 vcpu->stat.dtlb_real_miss_exits++; 80 break; 81 case DTLB_VIRT_MISS_EXITS: 82 vcpu->stat.dtlb_virt_miss_exits++; 83 break; 84 case MMIO_EXITS: 85 vcpu->stat.mmio_exits++; 86 break; 87 case ITLB_REAL_MISS_EXITS: 88 vcpu->stat.itlb_real_miss_exits++; 89 break; 90 case ITLB_VIRT_MISS_EXITS: 91 vcpu->stat.itlb_virt_miss_exits++; 92 break; 93 case SIGNAL_EXITS: 94 vcpu->stat.signal_exits++; 95 break; 96 } 97} 98 99/* wrapper to set exit time and account for it in kvm_stats */ 100static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type) 101{ 102 kvmppc_set_exit_type(vcpu, type); 103 kvmppc_account_exit_stat(vcpu, type); 104} 105 106#endif /* __POWERPC_KVM_EXITTIMING_H__ */ 107