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
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 */
93static 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