timing.h

 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__ */