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 | int kvmppc_create_vcpu_debugfs_e500(struct kvm_vcpu *vcpu, |
18 | struct dentry *debugfs_dentry); |
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 int kvmppc_create_vcpu_debugfs_e500(struct kvm_vcpu *vcpu, |
30 | struct dentry *debugfs_dentry) |
31 | { |
32 | return 0; |
33 | } |
34 | static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) {} |
35 | #endif /* CONFIG_KVM_EXIT_TIMING */ |
36 | |
37 | /* account the exit in kvm_stats */ |
38 | static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type) |
39 | { |
40 | /* type has to be known at build time for optimization */ |
41 | |
42 | /* The BUILD_BUG_ON below breaks in funny ways, commented out |
43 | * for now ... -BenH |
44 | BUILD_BUG_ON(!__builtin_constant_p(type)); |
45 | */ |
46 | switch (type) { |
47 | case EXT_INTR_EXITS: |
48 | vcpu->stat.ext_intr_exits++; |
49 | break; |
50 | case DEC_EXITS: |
51 | vcpu->stat.dec_exits++; |
52 | break; |
53 | case EMULATED_INST_EXITS: |
54 | vcpu->stat.emulated_inst_exits++; |
55 | break; |
56 | case DSI_EXITS: |
57 | vcpu->stat.dsi_exits++; |
58 | break; |
59 | case ISI_EXITS: |
60 | vcpu->stat.isi_exits++; |
61 | break; |
62 | case SYSCALL_EXITS: |
63 | vcpu->stat.syscall_exits++; |
64 | break; |
65 | case DTLB_REAL_MISS_EXITS: |
66 | vcpu->stat.dtlb_real_miss_exits++; |
67 | break; |
68 | case DTLB_VIRT_MISS_EXITS: |
69 | vcpu->stat.dtlb_virt_miss_exits++; |
70 | break; |
71 | case MMIO_EXITS: |
72 | vcpu->stat.mmio_exits++; |
73 | break; |
74 | case ITLB_REAL_MISS_EXITS: |
75 | vcpu->stat.itlb_real_miss_exits++; |
76 | break; |
77 | case ITLB_VIRT_MISS_EXITS: |
78 | vcpu->stat.itlb_virt_miss_exits++; |
79 | break; |
80 | case SIGNAL_EXITS: |
81 | vcpu->stat.signal_exits++; |
82 | break; |
83 | case DBELL_EXITS: |
84 | vcpu->stat.dbell_exits++; |
85 | break; |
86 | case GDBELL_EXITS: |
87 | vcpu->stat.gdbell_exits++; |
88 | break; |
89 | } |
90 | } |
91 | |
92 | /* wrapper to set exit time and account for it in kvm_stats */ |
93 | static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type) |
94 | { |
95 | kvmppc_set_exit_type(vcpu, type); |
96 | kvmppc_account_exit_stat(vcpu, type); |
97 | } |
98 | |
99 | #endif /* __POWERPC_KVM_EXITTIMING_H__ */ |
100 | |