1 // SPDX-License-Identifier: GPL-2.0
2 #include <inttypes.h>
3 #include "util/debug.h"
4 #include "util/dso.h"
5 #include "util/event.h" // struct perf_sample
6 #include "util/map.h"
7 #include "util/symbol.h"
8 #include "util/sort.h"
9 #include "util/evsel.h"
10 #include "util/machine.h"
11 #include "util/thread.h"
12 #include "tests/hists_common.h"
13 #include <linux/kernel.h>
14 #include <linux/perf_event.h>
15
16 static struct {
17 u32 pid;
18 const char *comm;
19 } fake_threads[] = {
20 { FAKE_PID_PERF1, "perf" },
21 { FAKE_PID_PERF2, "perf" },
22 { FAKE_PID_BASH, "bash" },
23 };
24
25 static struct {
26 u32 pid;
27 u64 start;
28 const char *filename;
29 } fake_mmap_info[] = {
30 { FAKE_PID_PERF1, FAKE_MAP_PERF, "perf" },
31 { FAKE_PID_PERF1, FAKE_MAP_LIBC, "libc" },
32 { FAKE_PID_PERF1, FAKE_MAP_KERNEL, "[kernel]" },
33 { FAKE_PID_PERF2, FAKE_MAP_PERF, "perf" },
34 { FAKE_PID_PERF2, FAKE_MAP_LIBC, "libc" },
35 { FAKE_PID_PERF2, FAKE_MAP_KERNEL, "[kernel]" },
36 { FAKE_PID_BASH, FAKE_MAP_BASH, "bash" },
37 { FAKE_PID_BASH, FAKE_MAP_LIBC, "libc" },
38 { FAKE_PID_BASH, FAKE_MAP_KERNEL, "[kernel]" },
39 };
40
41 struct fake_sym {
42 u64 start;
43 u64 length;
44 const char *name;
45 };
46
47 static struct fake_sym perf_syms[] = {
48 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" },
49 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "run_command" },
50 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "cmd_record" },
51 };
52
53 static struct fake_sym bash_syms[] = {
54 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" },
55 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "xmalloc" },
56 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "xfree" },
57 };
58
59 static struct fake_sym libc_syms[] = {
60 { 700, 100, "malloc" },
61 { 800, 100, "free" },
62 { 900, 100, "realloc" },
63 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "malloc" },
64 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "free" },
65 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "realloc" },
66 };
67
68 static struct fake_sym kernel_syms[] = {
69 { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "schedule" },
70 { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "page_fault" },
71 { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "sys_perf_event_open" },
72 };
73
74 static struct {
75 const char *dso_name;
76 struct fake_sym *syms;
77 size_t nr_syms;
78 } fake_symbols[] = {
79 { "perf", perf_syms, ARRAY_SIZE(perf_syms) },
80 { "bash", bash_syms, ARRAY_SIZE(bash_syms) },
81 { "libc", libc_syms, ARRAY_SIZE(libc_syms) },
82 { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
83 };
84
setup_fake_machine(struct machines * machines)85 struct machine *setup_fake_machine(struct machines *machines)
86 {
87 struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
88 size_t i;
89
90 if (machine == NULL) {
91 pr_debug("Not enough memory for machine setup\n");
92 return NULL;
93 }
94
95 for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
96 struct thread *thread;
97
98 thread = machine__findnew_thread(machine, fake_threads[i].pid,
99 fake_threads[i].pid);
100 if (thread == NULL)
101 goto out;
102
103 thread__set_comm(thread, fake_threads[i].comm, 0);
104 thread__put(thread);
105 }
106
107 for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
108 struct perf_sample sample = {
109 .cpumode = PERF_RECORD_MISC_USER,
110 };
111 union perf_event fake_mmap_event = {
112 .mmap = {
113 .pid = fake_mmap_info[i].pid,
114 .tid = fake_mmap_info[i].pid,
115 .start = fake_mmap_info[i].start,
116 .len = FAKE_MAP_LENGTH,
117 .pgoff = 0ULL,
118 },
119 };
120
121 strcpy(fake_mmap_event.mmap.filename,
122 fake_mmap_info[i].filename);
123
124 machine__process_mmap_event(machine, &fake_mmap_event, &sample);
125 }
126
127 for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {
128 size_t k;
129 struct dso *dso;
130
131 dso = machine__findnew_dso(machine, fake_symbols[i].dso_name);
132 if (dso == NULL)
133 goto out;
134
135 /* emulate dso__load() */
136 dso__set_loaded(dso);
137
138 for (k = 0; k < fake_symbols[i].nr_syms; k++) {
139 struct symbol *sym;
140 struct fake_sym *fsym = &fake_symbols[i].syms[k];
141
142 sym = symbol__new(fsym->start, fsym->length,
143 STB_GLOBAL, STT_FUNC, fsym->name);
144 if (sym == NULL) {
145 dso__put(dso);
146 goto out;
147 }
148
149 symbols__insert(&dso->symbols, sym);
150 }
151
152 dso__put(dso);
153 }
154
155 return machine;
156
157 out:
158 pr_debug("Not enough memory for machine setup\n");
159 machine__delete_threads(machine);
160 return NULL;
161 }
162
print_hists_in(struct hists * hists)163 void print_hists_in(struct hists *hists)
164 {
165 int i = 0;
166 struct rb_root_cached *root;
167 struct rb_node *node;
168
169 if (hists__has(hists, need_collapse))
170 root = &hists->entries_collapsed;
171 else
172 root = hists->entries_in;
173
174 pr_info("----- %s --------\n", __func__);
175 node = rb_first_cached(root);
176 while (node) {
177 struct hist_entry *he;
178
179 he = rb_entry(node, struct hist_entry, rb_node_in);
180
181 if (!he->filtered) {
182 struct dso *dso = map__dso(he->ms.map);
183
184 pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n",
185 i, thread__comm_str(he->thread),
186 dso->short_name,
187 he->ms.sym->name, he->stat.period);
188 }
189
190 i++;
191 node = rb_next(node);
192 }
193 }
194
print_hists_out(struct hists * hists)195 void print_hists_out(struct hists *hists)
196 {
197 int i = 0;
198 struct rb_root_cached *root;
199 struct rb_node *node;
200
201 root = &hists->entries;
202
203 pr_info("----- %s --------\n", __func__);
204 node = rb_first_cached(root);
205 while (node) {
206 struct hist_entry *he;
207
208 he = rb_entry(node, struct hist_entry, rb_node);
209
210 if (!he->filtered) {
211 struct dso *dso = map__dso(he->ms.map);
212
213 pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"/%"PRIu64"\n",
214 i, thread__comm_str(he->thread), thread__tid(he->thread),
215 dso->short_name,
216 he->ms.sym->name, he->stat.period,
217 he->stat_acc ? he->stat_acc->period : 0);
218 }
219
220 i++;
221 node = rb_next(node);
222 }
223 }
224