c01139fa
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] /
1 /*
2 * builtin-annotate.c
3 *
4 * Builtin annotate command: Analyze the perf.data input file,
5 * look up and read DSOs and symbol information and display
6 * a histogram of results, along various sorting keys.
7 */
8 #include "builtin.h"
9
10 #include "util/util.h"
11 #include "util/color.h"
12 #include <linux/list.h>
13 #include "util/cache.h"
14 #include <linux/rbtree.h>
15 #include "util/symbol.h"
16
17 #include "perf.h"
18 #include "util/debug.h"
19
20 #include "util/evlist.h"
21 #include "util/evsel.h"
22 #include "util/annotate.h"
23 #include "util/event.h"
24 #include "util/parse-options.h"
25 #include "util/parse-events.h"
26 #include "util/thread.h"
27 #include "util/sort.h"
28 #include "util/hist.h"
29 #include "util/session.h"
30 #include "util/tool.h"
31
32 #include <linux/bitmap.h>
33
34 struct perf_annotate {
35 struct perf_tool tool;
36 char const *input_name;
37 bool force, use_tui, use_stdio;
38 bool full_paths;
39 bool print_line;
40 const char *sym_hist_filter;
41 const char *cpu_list;
42 DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
43 };
44
45 static int perf_evsel__add_sample(struct perf_evsel *evsel,
46 struct perf_sample *sample,
47 struct addr_location *al,
48 struct perf_annotate *ann)
49 {
50 struct hist_entry *he;
51 int ret;
52
53 if (ann->sym_hist_filter != NULL &&
54 (al->sym == NULL ||
55 strcmp(ann->sym_hist_filter, al->sym->name) != 0)) {
56 /* We're only interested in a symbol named sym_hist_filter */
57 if (al->sym != NULL) {
58 rb_erase(&al->sym->rb_node,
59 &al->map->dso->symbols[al->map->type]);
60 symbol__delete(al->sym);
61 }
62 return 0;
63 }
64
65 he = __hists__add_entry(&evsel->hists, al, NULL, 1);
66 if (he == NULL)
67 return -ENOMEM;
68
69 ret = 0;
70 if (he->ms.sym != NULL) {
71 struct annotation *notes = symbol__annotation(he->ms.sym);
72 if (notes->src == NULL && symbol__alloc_hist(he->ms.sym) < 0)
73 return -ENOMEM;
74
75 ret = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
76 }
77
78 evsel->hists.stats.total_period += sample->period;
79 hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
80 return ret;
81 }
82
83 static int process_sample_event(struct perf_tool *tool,
84 union perf_event *event,
85 struct perf_sample *sample,
86 struct perf_evsel *evsel,
87 struct machine *machine)
88 {
89 struct perf_annotate *ann = container_of(tool, struct perf_annotate, tool);
90 struct addr_location al;
91
92 if (perf_event__preprocess_sample(event, machine, &al, sample,
93 symbol__annotate_init) < 0) {
94 pr_warning("problem processing %d event, skipping it.\n",
95 event->header.type);
96 return -1;
97 }
98
99 if (ann->cpu_list && !test_bit(sample->cpu, ann->cpu_bitmap))
100 return 0;
101
102 if (!al.filtered && perf_evsel__add_sample(evsel, sample, &al, ann)) {
103 pr_warning("problem incrementing symbol count, "
104 "skipping event\n");
105 return -1;
106 }
107
108 return 0;
109 }
110
111 static int hist_entry__tty_annotate(struct hist_entry *he, int evidx,
112 struct perf_annotate *ann)
113 {
114 return symbol__tty_annotate(he->ms.sym, he->ms.map, evidx,
115 ann->print_line, ann->full_paths, 0, 0);
116 }
117
118 static void hists__find_annotations(struct hists *self, int evidx,
119 struct perf_annotate *ann)
120 {
121 struct rb_node *nd = rb_first(&self->entries), *next;
122 int key = K_RIGHT;
123
124 while (nd) {
125 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
126 struct annotation *notes;
127
128 if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned)
129 goto find_next;
130
131 notes = symbol__annotation(he->ms.sym);
132 if (notes->src == NULL) {
133 find_next:
134 if (key == K_LEFT)
135 nd = rb_prev(nd);
136 else
137 nd = rb_next(nd);
138 continue;
139 }
140
141 if (use_browser > 0) {
142 key = hist_entry__tui_annotate(he, evidx, NULL, NULL, 0);
143 switch (key) {
144 case K_RIGHT:
145 next = rb_next(nd);
146 break;
147 case K_LEFT:
148 next = rb_prev(nd);
149 break;
150 default:
151 return;
152 }
153
154 if (next != NULL)
155 nd = next;
156 } else {
157 hist_entry__tty_annotate(he, evidx, ann);
158 nd = rb_next(nd);
159 /*
160 * Since we have a hist_entry per IP for the same
161 * symbol, free he->ms.sym->src to signal we already
162 * processed this symbol.
163 */
164 free(notes->src);
165 notes->src = NULL;
166 }
167 }
168 }
169
170 static int __cmd_annotate(struct perf_annotate *ann)
171 {
172 int ret;
173 struct perf_session *session;
174 struct perf_evsel *pos;
175 u64 total_nr_samples;
176
177 session = perf_session__new(ann->input_name, O_RDONLY,
178 ann->force, false, &ann->tool);
179 if (session == NULL)
180 return -ENOMEM;
181
182 if (ann->cpu_list) {
183 ret = perf_session__cpu_bitmap(session, ann->cpu_list,
184 ann->cpu_bitmap);
185 if (ret)
186 goto out_delete;
187 }
188
189 ret = perf_session__process_events(session, &ann->tool);
190 if (ret)
191 goto out_delete;
192
193 if (dump_trace) {
194 perf_session__fprintf_nr_events(session, stdout);
195 goto out_delete;
196 }
197
198 if (verbose > 3)
199 perf_session__fprintf(session, stdout);
200
201 if (verbose > 2)
202 perf_session__fprintf_dsos(session, stdout);
203
204 total_nr_samples = 0;
205 list_for_each_entry(pos, &session->evlist->entries, node) {
206 struct hists *hists = &pos->hists;
207 u32 nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
208
209 if (nr_samples > 0) {
210 total_nr_samples += nr_samples;
211 hists__collapse_resort(hists);
212 hists__output_resort(hists);
213 hists__find_annotations(hists, pos->idx, ann);
214 }
215 }
216
217 if (total_nr_samples == 0) {
218 ui__warning("The %s file has no samples!\n", ann->input_name);
219 goto out_delete;
220 }
221 out_delete:
222 /*
223 * Speed up the exit process, for large files this can
224 * take quite a while.
225 *
226 * XXX Enable this when using valgrind or if we ever
227 * librarize this command.
228 *
229 * Also experiment with obstacks to see how much speed
230 * up we'll get here.
231 *
232 * perf_session__delete(session);
233 */
234 return ret;
235 }
236
237 static const char * const annotate_usage[] = {
238 "perf annotate [<options>] <command>",
239 NULL
240 };
241
242 int cmd_annotate(int argc, const char **argv, const char *prefix __used)
243 {
244 struct perf_annotate annotate = {
245 .tool = {
246 .sample = process_sample_event,
247 .mmap = perf_event__process_mmap,
248 .comm = perf_event__process_comm,
249 .fork = perf_event__process_task,
250 .ordered_samples = true,
251 .ordering_requires_timestamps = true,
252 },
253 .input_name = "perf.data",
254 };
255 const struct option options[] = {
256 OPT_STRING('i', "input", &annotate.input_name, "file",
257 "input file name"),
258 OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
259 "only consider symbols in these dsos"),
260 OPT_STRING('s', "symbol", &annotate.sym_hist_filter, "symbol",
261 "symbol to annotate"),
262 OPT_BOOLEAN('f', "force", &annotate.force, "don't complain, do it"),
263 OPT_INCR('v', "verbose", &verbose,
264 "be more verbose (show symbol address, etc)"),
265 OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
266 "dump raw trace in ASCII"),
267 OPT_BOOLEAN(0, "tui", &annotate.use_tui, "Use the TUI interface"),
268 OPT_BOOLEAN(0, "stdio", &annotate.use_stdio, "Use the stdio interface"),
269 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
270 "file", "vmlinux pathname"),
271 OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
272 "load module symbols - WARNING: use only with -k and LIVE kernel"),
273 OPT_BOOLEAN('l', "print-line", &annotate.print_line,
274 "print matching source lines (may be slow)"),
275 OPT_BOOLEAN('P', "full-paths", &annotate.full_paths,
276 "Don't shorten the displayed pathnames"),
277 OPT_STRING('c', "cpu", &annotate.cpu_list, "cpu", "list of cpus to profile"),
278 OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
279 "Look for files with symbols relative to this directory"),
280 OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
281 "Interleave source code with assembly code (default)"),
282 OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
283 "Display raw encoding of assembly instructions (default)"),
284 OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
285 "Specify disassembler style (e.g. -M intel for intel syntax)"),
286 OPT_END()
287 };
288
289 argc = parse_options(argc, argv, options, annotate_usage, 0);
290
291 if (annotate.use_stdio)
292 use_browser = 0;
293 else if (annotate.use_tui)
294 use_browser = 1;
295
296 setup_browser(true);
297
298 symbol_conf.priv_size = sizeof(struct annotation);
299 symbol_conf.try_vmlinux_path = true;
300
301 if (symbol__init() < 0)
302 return -1;
303
304 setup_sorting(annotate_usage, options);
305
306 if (argc) {
307 /*
308 * Special case: if there's an argument left then assume tha
309 * it's a symbol filter:
310 */
311 if (argc > 1)
312 usage_with_options(annotate_usage, options);
313
314 annotate.sym_hist_filter = argv[0];
315 }
316
317 if (field_sep && *field_sep == '.') {
318 pr_err("'.' is the only non valid --field-separator argument\n");
319 return -1;
320 }
321
322 return __cmd_annotate(&annotate);
323 }