xref: /linux/tools/perf/util/kvm-stat.h (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
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