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
15void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu);
16void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu);
17int kvmppc_create_vcpu_debugfs_e500(struct kvm_vcpu *vcpu,
18 struct dentry *debugfs_dentry);
19
20static 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 */
27static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {}
28static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {}
29static inline int kvmppc_create_vcpu_debugfs_e500(struct kvm_vcpu *vcpu,
30 struct dentry *debugfs_dentry)
31{
32 return 0;
33}
34static 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 */
38static 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 BUILD_BUG_ON(!__builtin_constant_p(type));
42 switch (type) {
43 case EXT_INTR_EXITS:
44 vcpu->stat.ext_intr_exits++;
45 break;
46 case DEC_EXITS:
47 vcpu->stat.dec_exits++;
48 break;
49 case EMULATED_INST_EXITS:
50 vcpu->stat.emulated_inst_exits++;
51 break;
52 case DSI_EXITS:
53 vcpu->stat.dsi_exits++;
54 break;
55 case ISI_EXITS:
56 vcpu->stat.isi_exits++;
57 break;
58 case SYSCALL_EXITS:
59 vcpu->stat.syscall_exits++;
60 break;
61 case DTLB_REAL_MISS_EXITS:
62 vcpu->stat.dtlb_real_miss_exits++;
63 break;
64 case DTLB_VIRT_MISS_EXITS:
65 vcpu->stat.dtlb_virt_miss_exits++;
66 break;
67 case MMIO_EXITS:
68 vcpu->stat.mmio_exits++;
69 break;
70 case ITLB_REAL_MISS_EXITS:
71 vcpu->stat.itlb_real_miss_exits++;
72 break;
73 case ITLB_VIRT_MISS_EXITS:
74 vcpu->stat.itlb_virt_miss_exits++;
75 break;
76 case SIGNAL_EXITS:
77 vcpu->stat.signal_exits++;
78 break;
79 case DBELL_EXITS:
80 vcpu->stat.dbell_exits++;
81 break;
82 case GDBELL_EXITS:
83 vcpu->stat.gdbell_exits++;
84 break;
85 }
86}
87
88/* wrapper to set exit time and account for it in kvm_stats */
89static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type)
90{
91 kvmppc_set_exit_type(vcpu, type);
92 kvmppc_account_exit_stat(vcpu, type);
93}
94
95#endif /* __POWERPC_KVM_EXITTIMING_H__ */
96

source code of linux/arch/powerpc/kvm/timing.h