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 #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
kvmppc_set_exit_type(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_init_timing_stats(struct kvm_vcpu * vcpu)28 static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_update_timing_stats(struct kvm_vcpu * vcpu)29 static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_create_vcpu_debugfs(struct kvm_vcpu * vcpu,unsigned int id)30 static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu,
31 unsigned int id) {}
kvmppc_remove_vcpu_debugfs(struct kvm_vcpu * vcpu)32 static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {}
kvmppc_set_exit_type(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_account_exit_stat(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_account_exit(struct kvm_vcpu * vcpu,int type)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__ */
99