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