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gerrit-public.fairphone.software / kernel / msm-4.9 / de06c1db255fb70301651a0255c6147e0036ea01 / . / arch / powerpc / kvm / timing.h
blob: 3123690c82dc11a1f1c36b43687e554d96f93892 [file] [log] [blame]
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]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
27void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu);
28void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu);
29void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu, unsigned int id);
30void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu);
31
32static 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 */
39static inline void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu) {}
40static inline void kvmppc_update_timing_stats(struct kvm_vcpu *vcpu) {}
41static inline void kvmppc_create_vcpu_debugfs(struct kvm_vcpu *vcpu,
42 unsigned int id) {}
43static inline void kvmppc_remove_vcpu_debugfs(struct kvm_vcpu *vcpu) {}
44static 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 */
Hollis Blanchard7b701592008-12-02 15:51:58 -0600[diff] [blame]48static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type)
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]49{
50 /* type has to be known at build time for optimization */
Benjamin Herrenschmidt38634e62009-11-05 17:10:34 +1100[diff] [blame]51
52 /* The BUILD_BUG_ON below breaks in funny ways, commented out
53 * for now ... -BenH
Hollis Blanchardc0a187e2009-10-23 00:35:30 +0000[diff] [blame]54 BUILD_BUG_ON(!__builtin_constant_p(type));
Benjamin Herrenschmidt38634e62009-11-05 17:10:34 +1100[diff] [blame]55 */
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]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;
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]66 case DSI_EXITS:
67 vcpu->stat.dsi_exits++;
68 break;
69 case ISI_EXITS:
70 vcpu->stat.isi_exits++;
71 break;
72 case SYSCALL_EXITS:
73 vcpu->stat.syscall_exits++;
74 break;
75 case DTLB_REAL_MISS_EXITS:
76 vcpu->stat.dtlb_real_miss_exits++;
77 break;
78 case DTLB_VIRT_MISS_EXITS:
79 vcpu->stat.dtlb_virt_miss_exits++;
80 break;
81 case MMIO_EXITS:
82 vcpu->stat.mmio_exits++;
83 break;
84 case ITLB_REAL_MISS_EXITS:
85 vcpu->stat.itlb_real_miss_exits++;
86 break;
87 case ITLB_VIRT_MISS_EXITS:
88 vcpu->stat.itlb_virt_miss_exits++;
89 break;
90 case SIGNAL_EXITS:
91 vcpu->stat.signal_exits++;
92 break;
Scott Woodd30f6e42011-12-20 15:34:43 +0000[diff] [blame]93 case DBELL_EXITS:
94 vcpu->stat.dbell_exits++;
95 break;
96 case GDBELL_EXITS:
97 vcpu->stat.gdbell_exits++;
98 break;
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]99 }
100}
101
102/* wrapper to set exit time and account for it in kvm_stats */
Hollis Blanchard7b701592008-12-02 15:51:58 -0600[diff] [blame]103static inline void kvmppc_account_exit(struct kvm_vcpu *vcpu, int type)
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]104{
105 kvmppc_set_exit_type(vcpu, type);
Hollis Blanchard7b701592008-12-02 15:51:58 -0600[diff] [blame]106 kvmppc_account_exit_stat(vcpu, type);
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600[diff] [blame]107}
108
109#endif /* __POWERPC_KVM_EXITTIMING_H__ */