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
kvmppc_set_exit_type(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_init_timing_stats(struct kvm_vcpu * vcpu)27 static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_update_timing_stats(struct kvm_vcpu * vcpu)28 static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_create_vcpu_debugfs(struct kvm_vcpu * vcpu,unsigned int id)29 static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu,
30 unsigned int id) {}
kvmppc_remove_vcpu_debugfs(struct kvm_vcpu * vcpu)31 static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {}
kvmppc_set_exit_type(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_account_exit_stat(struct kvm_vcpu * vcpu,int type)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 */
kvmppc_account_exit(struct kvm_vcpu * vcpu,int type)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