tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
118#if defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
119
120void exit_event_get_key(struct evsel *evsel,
121 struct perf_sample *sample,
122 struct event_key *key);
123bool exit_event_begin(struct evsel *evsel,
124 struct perf_sample *sample,
125 struct event_key *key);
126bool exit_event_end(struct evsel *evsel,
127 struct perf_sample *sample,
128 struct event_key *key);
129void exit_event_decode_key(struct perf_kvm_stat *kvm,
130 struct event_key *key,
131 char *decode);
132#endif
133
134bool kvm_exit_event(struct evsel *evsel);
135bool kvm_entry_event(struct evsel *evsel);
136int setup_kvm_events_tp(struct perf_kvm_stat *kvm);
137
138#define define_exit_reasons_table(name, symbols) \
139 static struct exit_reasons_table name[] = { \
140 symbols, { -1, NULL } \
141 }
142
143/*
144 * arch specific callbacks and data structures
145 */
146int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid);
147
148extern const char *kvm_events_tp[];
149extern struct kvm_reg_events_ops kvm_reg_events_ops[];
150extern const char * const kvm_skip_events[];
151extern const char *vcpu_id_str;
152extern const char *kvm_exit_reason;
153extern const char *kvm_entry_trace;
154extern const char *kvm_exit_trace;
155
156static inline struct kvm_info *kvm_info__get(struct kvm_info *ki)
157{
158 if (ki)
159 refcount_inc(&ki->refcnt);
160 return ki;
161}
162
163static inline void kvm_info__put(struct kvm_info *ki)
164{
165 if (ki && refcount_dec_and_test(&ki->refcnt))
166 free(ki);
167}
168
169static inline void __kvm_info__zput(struct kvm_info **ki)
170{
171 kvm_info__put(*ki);
172 *ki = NULL;
173}
174
175#define kvm_info__zput(ki) __kvm_info__zput(&ki)
176
177static inline struct kvm_info *kvm_info__new(void)
178{
179 struct kvm_info *ki;
180
181 ki = zalloc(sizeof(*ki));
182 if (ki)
183 refcount_set(&ki->refcnt, 1);
184
185 return ki;
186}
187
188#else /* HAVE_KVM_STAT_SUPPORT */
189// We use this unconditionally in hists__findnew_entry() and hist_entry__delete()
190#define kvm_info__zput(ki) do { } while (0)
191#endif /* HAVE_KVM_STAT_SUPPORT */
192
193extern int kvm_add_default_arch_event(int *argc, const char **argv);
194#endif /* __PERF_KVM_STAT_H */