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
18struct evsel;
19struct evlist;
20struct perf_session;
21
22struct event_key {
23	#define INVALID_KEY     (~0ULL)
24	u64 key;
25	int info;
26	struct exit_reasons_table *exit_reasons;
27};
28
29struct kvm_info {
30	char name[KVM_EVENT_NAME_LEN];
31	refcount_t refcnt;
32};
33
34struct kvm_event_stats {
35	u64 time;
36	struct stats stats;
37};
38
39struct perf_kvm_stat;
40
41struct 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
56struct 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
63struct 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
75struct exit_reasons_table {
76	unsigned long exit_code;
77	const char *reason;
78};
79
80struct 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
113struct kvm_reg_events_ops {
114	const char *name;
115	struct kvm_events_ops *ops;
116};
117
118void exit_event_get_key(struct evsel *evsel,
119			struct perf_sample *sample,
120			struct event_key *key);
121bool exit_event_begin(struct evsel *evsel,
122		      struct perf_sample *sample,
123		      struct event_key *key);
124bool exit_event_end(struct evsel *evsel,
125		    struct perf_sample *sample,
126		    struct event_key *key);
127void exit_event_decode_key(struct perf_kvm_stat *kvm,
128			   struct event_key *key,
129			   char *decode);
130
131bool kvm_exit_event(struct evsel *evsel);
132bool kvm_entry_event(struct evsel *evsel);
133int 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 */
143int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid);
144
145extern const char *kvm_events_tp[];
146extern struct kvm_reg_events_ops kvm_reg_events_ops[];
147extern const char * const kvm_skip_events[];
148extern const char *vcpu_id_str;
149extern const char *kvm_exit_reason;
150extern const char *kvm_entry_trace;
151extern const char *kvm_exit_trace;
152
153static 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
160static inline void kvm_info__put(struct kvm_info *ki)
161{
162	if (ki && refcount_dec_and_test(&ki->refcnt))
163		free(ki);
164}
165
166static 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
174static 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
190extern int kvm_add_default_arch_event(int *argc, const char **argv);
191#endif /* __PERF_KVM_STAT_H */
192