1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
18 */
19
20 #ifndef __POWERPC_KVM_EXITTIMING_H__
21 #define __POWERPC_KVM_EXITTIMING_H__
22
23 #include <linux/kvm_host.h>
24 #include <asm/kvm_host.h>
25
26 #ifdef CONFIG_KVM_EXIT_TIMING
27 void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu);
28 void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu);
29 void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, unsigned int id);
30 void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu);
31
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 {
34 vcpu->arch.last_exit_type = type;
35 }
36
37 #else
38 /* if exit timing is not configured there is no need to build the c file */
kvmppc_init_timing_stats(struct kvm_vcpu * vcpu)39 static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_update_timing_stats(struct kvm_vcpu * vcpu)40 static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {}
kvmppc_create_vcpu_debugfs(struct kvm_vcpu * vcpu,unsigned int id)41 static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu,
42 unsigned int id) {}
kvmppc_remove_vcpu_debugfs(struct kvm_vcpu * vcpu)43 static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {}
kvmppc_set_exit_type(struct kvm_vcpu * vcpu,int type)44 static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) {}
45 #endif /* CONFIG_KVM_EXIT_TIMING */
46
47 /* account the exit in kvm_stats */
kvmppc_account_exit_stat(struct kvm_vcpu * vcpu,int type)48 static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type)
49 {
50 /* type has to be known at build time for optimization */
51
52 /* The BUILD_BUG_ON below breaks in funny ways, commented out
53 * for now ... -BenH
54 BUILD_BUG_ON(!__builtin_constant_p(type));
55 */
56 switch (type) {
57 case EXT_INTR_EXITS:
58 vcpu->stat.ext_intr_exits++;
59 break;
60 case DEC_EXITS:
61 vcpu->stat.dec_exits++;
62 break;
63 case EMULATED_INST_EXITS:
64 vcpu->stat.emulated_inst_exits++;
65 break;
66 case DCR_EXITS:
67 vcpu->stat.dcr_exits++;
68 break;
69 case DSI_EXITS:
70 vcpu->stat.dsi_exits++;
71 break;
72 case ISI_EXITS:
73 vcpu->stat.isi_exits++;
74 break;
75 case SYSCALL_EXITS:
76 vcpu->stat.syscall_exits++;
77 break;
78 case DTLB_REAL_MISS_EXITS:
79 vcpu->stat.dtlb_real_miss_exits++;
80 break;
81 case DTLB_VIRT_MISS_EXITS:
82 vcpu->stat.dtlb_virt_miss_exits++;
83 break;
84 case MMIO_EXITS:
85 vcpu->stat.mmio_exits++;
86 break;
87 case ITLB_REAL_MISS_EXITS:
88 vcpu->stat.itlb_real_miss_exits++;
89 break;
90 case ITLB_VIRT_MISS_EXITS:
91 vcpu->stat.itlb_virt_miss_exits++;
92 break;
93 case SIGNAL_EXITS:
94 vcpu->stat.signal_exits++;
95 break;
96 }
97 }
98
99 /* wrapper to set exit time and account for it in kvm_stats */
kvmppc_account_exit(struct kvm_vcpu * vcpu,int type)100 static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type)
101 {
102 kvmppc_set_exit_type(vcpu, type);
103 kvmppc_account_exit_stat(vcpu, type);
104 }
105
106 #endif /* __POWERPC_KVM_EXITTIMING_H__ */
107