1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_KVM_STAT_H
3 #define __PERF_KVM_STAT_H
4
5 #ifdef HAVE_KVM_STAT_SUPPORT
6
7 #include "tool.h"
8 #include "sort.h"
9 #include "stat.h"
10 #include "symbol.h"
11 #include "record.h"
12
13 #include <stdlib.h>
14 #include <linux/zalloc.h>
15
16 #define KVM_EVENT_NAME_LEN 40
17
18 struct evsel;
19 struct evlist;
20 struct perf_session;
21
22 struct event_key {
23 #define INVALID_KEY (~0ULL)
24 u64 key;
25 int info;
26 struct exit_reasons_table *exit_reasons;
27 };
28
29 struct kvm_info {
30 char name[KVM_EVENT_NAME_LEN];
31 refcount_t refcnt;
32 };
33
34 struct kvm_event_stats {
35 u64 time;
36 struct stats stats;
37 };
38
39 struct perf_kvm_stat;
40
41 struct kvm_event {
42 struct list_head hash_entry;
43
44 struct perf_kvm_stat *perf_kvm;
45 struct event_key key;
46
47 struct kvm_event_stats total;
48
49 #define DEFAULT_VCPU_NUM 8
50 int max_vcpu;
51 struct kvm_event_stats *vcpu;
52
53 struct hist_entry he;
54 };
55
56 struct child_event_ops {
57 void (*get_key)(struct evsel *evsel,
58 struct perf_sample *sample,
59 struct event_key *key);
60 const char *name;
61 };
62
63 struct kvm_events_ops {
64 bool (*is_begin_event)(struct evsel *evsel,
65 struct perf_sample *sample,
66 struct event_key *key);
67 bool (*is_end_event)(struct evsel *evsel,
68 struct perf_sample *sample, struct event_key *key);
69 struct child_event_ops *child_ops;
70 void (*decode_key)(struct perf_kvm_stat *kvm, struct event_key *key,
71 char *decode);
72 const char *name;
73 };
74
75 struct exit_reasons_table {
76 unsigned long exit_code;
77 const char *reason;
78 };
79
80 struct perf_kvm_stat {
81 struct perf_tool tool;
82 struct record_opts opts;
83 struct evlist *evlist;
84 struct perf_session *session;
85
86 const char *file_name;
87 const char *report_event;
88 const char *sort_key;
89 int trace_vcpu;
90
91 /* Used when process events */
92 struct addr_location al;
93
94 struct exit_reasons_table *exit_reasons;
95 const char *exit_reasons_isa;
96
97 struct kvm_events_ops *events_ops;
98
99 u64 total_time;
100 u64 total_count;
101 u64 lost_events;
102 u64 duration;
103
104 struct intlist *pid_list;
105
106 int timerfd;
107 unsigned int display_time;
108 bool live;
109 bool force;
110 bool use_stdio;
111 };
112
113 struct kvm_reg_events_ops {
114 const char *name;
115 struct kvm_events_ops *ops;
116 };
117
118 void exit_event_get_key(struct evsel *evsel,
119 struct perf_sample *sample,
120 struct event_key *key);
121 bool exit_event_begin(struct evsel *evsel,
122 struct perf_sample *sample,
123 struct event_key *key);
124 bool exit_event_end(struct evsel *evsel,
125 struct perf_sample *sample,
126 struct event_key *key);
127 void exit_event_decode_key(struct perf_kvm_stat *kvm,
128 struct event_key *key,
129 char *decode);
130
131 bool kvm_exit_event(struct evsel *evsel);
132 bool kvm_entry_event(struct evsel *evsel);
133 int setup_kvm_events_tp(struct perf_kvm_stat *kvm);
134
135 #define define_exit_reasons_table(name, symbols) \
136 static struct exit_reasons_table name[] = { \
137 symbols, { -1, NULL } \
138 }
139
140 /*
141 * arch specific callbacks and data structures
142 */
143 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid);
144
145 extern const char *kvm_events_tp[];
146 extern struct kvm_reg_events_ops kvm_reg_events_ops[];
147 extern const char * const kvm_skip_events[];
148 extern const char *vcpu_id_str;
149 extern const char *kvm_exit_reason;
150 extern const char *kvm_entry_trace;
151 extern const char *kvm_exit_trace;
152
kvm_info__get(struct kvm_info * ki)153 static inline struct kvm_info *kvm_info__get(struct kvm_info *ki)
154 {
155 if (ki)
156 refcount_inc(&ki->refcnt);
157 return ki;
158 }
159
kvm_info__put(struct kvm_info * ki)160 static inline void kvm_info__put(struct kvm_info *ki)
161 {
162 if (ki && refcount_dec_and_test(&ki->refcnt))
163 free(ki);
164 }
165
__kvm_info__zput(struct kvm_info ** ki)166 static inline void __kvm_info__zput(struct kvm_info **ki)
167 {
168 kvm_info__put(*ki);
169 *ki = NULL;
170 }
171
172 #define kvm_info__zput(ki) __kvm_info__zput(&ki)
173
kvm_info__new(void)174 static inline struct kvm_info *kvm_info__new(void)
175 {
176 struct kvm_info *ki;
177
178 ki = zalloc(sizeof(*ki));
179 if (ki)
180 refcount_set(&ki->refcnt, 1);
181
182 return ki;
183 }
184
185 #else /* HAVE_KVM_STAT_SUPPORT */
186 // We use this unconditionally in hists__findnew_entry() and hist_entry__delete()
187 #define kvm_info__zput(ki) do { } while (0)
188 #endif /* HAVE_KVM_STAT_SUPPORT */
189
190 extern int kvm_add_default_arch_event(int *argc, const char **argv);
191 #endif /* __PERF_KVM_STAT_H */
192