summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/annotate.h
blob: 013d414b0e5778a09b7f0c95d3dc509e81d400aa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_ANNOTATE_H
#define __PERF_ANNOTATE_H

#include <stdbool.h>
#include <stdint.h>
#include <linux/types.h>
#include "symbol.h"
#include "hist.h"
#include "sort.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <pthread.h>

struct ins_ops;

struct ins {
	const char     *name;
	struct ins_ops *ops;
};

struct ins_operands {
	char	*raw;
	struct {
		char	*raw;
		char	*name;
		struct symbol *sym;
		u64	addr;
		s64	offset;
		bool	offset_avail;
		bool	outside;
	} target;
	union {
		struct {
			char	*raw;
			char	*name;
			u64	addr;
		} source;
		struct {
			struct ins	    ins;
			struct ins_operands *ops;
		} locked;
	};
};

struct arch;

struct ins_ops {
	void (*free)(struct ins_operands *ops);
	int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
	int (*scnprintf)(struct ins *ins, char *bf, size_t size,
			 struct ins_operands *ops);
};

bool ins__is_jump(const struct ins *ins);
bool ins__is_call(const struct ins *ins);
bool ins__is_ret(const struct ins *ins);
bool ins__is_lock(const struct ins *ins);
int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);

#define ANNOTATION__IPC_WIDTH 6
#define ANNOTATION__CYCLES_WIDTH 6
#define ANNOTATION__MINMAX_CYCLES_WIDTH 19

struct annotation_options {
	bool hide_src_code,
	     use_offset,
	     jump_arrows,
	     print_lines,
	     full_path,
	     show_linenr,
	     show_nr_jumps,
	     show_nr_samples,
	     show_total_period,
	     show_minmax_cycle;
	u8   offset_level;
	int  min_pcnt;
	int  max_lines;
	int  context;
};

enum {
	ANNOTATION__OFFSET_JUMP_TARGETS = 1,
	ANNOTATION__OFFSET_CALL,
	ANNOTATION__MAX_OFFSET_LEVEL,
};

#define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS

extern struct annotation_options annotation__default_options;

struct annotation;

struct sym_hist_entry {
	u64		nr_samples;
	u64		period;
};

struct annotation_data {
	double			 percent;
	double			 percent_sum;
	struct sym_hist_entry	 he;
};

struct annotation_line {
	struct list_head	 node;
	struct rb_node		 rb_node;
	s64			 offset;
	char			*line;
	int			 line_nr;
	int			 jump_sources;
	float			 ipc;
	u64			 cycles;
	u64			 cycles_max;
	u64			 cycles_min;
	size_t			 privsize;
	char			*path;
	u32			 idx;
	int			 idx_asm;
	int			 samples_nr;
	struct annotation_data	 samples[0];
};

struct disasm_line {
	struct ins		 ins;
	struct ins_operands	 ops;

	/* This needs to be at the end. */
	struct annotation_line	 al;
};

static inline struct disasm_line *disasm_line(struct annotation_line *al)
{
	return al ? container_of(al, struct disasm_line, al) : NULL;
}

/*
 * Is this offset in the same function as the line it is used?
 * asm functions jump to other functions, for instance.
 */
static inline bool disasm_line__has_local_offset(const struct disasm_line *dl)
{
	return dl->ops.target.offset_avail && !dl->ops.target.outside;
}

/*
 * Can we draw an arrow from the jump to its target, for instance? I.e.
 * is the jump and its target in the same function?
 */
bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym);

void disasm_line__free(struct disasm_line *dl);
struct annotation_line *
annotation_line__next(struct annotation_line *pos, struct list_head *head);

struct annotation_write_ops {
	bool first_line, current_entry, change_color;
	int  width;
	void *obj;
	int  (*set_color)(void *obj, int color);
	void (*set_percent_color)(void *obj, double percent, bool current);
	int  (*set_jumps_percent_color)(void *obj, int nr, bool current);
	void (*printf)(void *obj, const char *fmt, ...);
	void (*write_graph)(void *obj, int graph);
};

double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes);
void annotation_line__write(struct annotation_line *al, struct annotation *notes,
			    struct annotation_write_ops *ops);

int __annotation__scnprintf_samples_period(struct annotation *notes,
					   char *bf, size_t size,
					   struct perf_evsel *evsel,
					   bool show_freq);

static inline int annotation__scnprintf_samples_period(struct annotation *notes,
						       char *bf, size_t size,
						       struct perf_evsel *evsel)
{
	return __annotation__scnprintf_samples_period(notes, bf, size, evsel, true);
}

int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
size_t disasm__fprintf(struct list_head *head, FILE *fp);
void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);

struct sym_hist {
	u64		      nr_samples;
	u64		      period;
	struct sym_hist_entry addr[0];
};

struct cyc_hist {
	u64	start;
	u64	cycles;
	u64	cycles_aggr;
	u64	cycles_max;
	u64	cycles_min;
	u32	num;
	u32	num_aggr;
	u8	have_start;
	/* 1 byte padding */
	u16	reset;
};

/** struct annotated_source - symbols with hits have this attached as in sannotation
 *
 * @histograms: Array of addr hit histograms per event being monitored
 * nr_histograms: This may not be the same as evsel->evlist->nr_entries if
 * 		  we have more than a group in a evlist, where we will want
 * 		  to see each group separately, that is why symbol__annotate2()
 * 		  sets src->nr_histograms to evsel->nr_members.
 * @lines: If 'print_lines' is specified, per source code line percentages
 * @source: source parsed from a disassembler like objdump -dS
 * @cyc_hist: Average cycles per basic block
 *
 * lines is allocated, percentages calculated and all sorted by percentage
 * when the annotation is about to be presented, so the percentages are for
 * one of the entries in the histogram array, i.e. for the event/counter being
 * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 * returns.
 */
struct annotated_source {
	struct list_head   source;
	int    		   nr_histograms;
	size_t		   sizeof_sym_hist;
	struct cyc_hist	   *cycles_hist;
	struct sym_hist	   *histograms;
};

struct annotation {
	pthread_mutex_t		lock;
	u64			max_coverage;
	u64			start;
	struct annotation_options *options;
	struct annotation_line	**offsets;
	int			nr_events;
	int			nr_jumps;
	int			max_jump_sources;
	int			nr_entries;
	int			nr_asm_entries;
	u16			max_line_len;
	struct {
		u8		addr;
		u8		jumps;
		u8		target;
		u8		min_addr;
		u8		max_addr;
	} widths;
	bool			have_cycles;
	struct annotated_source *src;
};

static inline int annotation__cycles_width(struct annotation *notes)
{
	if (notes->have_cycles && notes->options->show_minmax_cycle)
		return ANNOTATION__IPC_WIDTH + ANNOTATION__MINMAX_CYCLES_WIDTH;

	return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
}

static inline int annotation__pcnt_width(struct annotation *notes)
{
	return (notes->options->show_total_period ? 12 : 7) * notes->nr_events;
}

static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
{
	return notes->options->hide_src_code && al->offset == -1;
}

void annotation__set_offsets(struct annotation *notes, s64 size);
void annotation__compute_ipc(struct annotation *notes, size_t size);
void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
void annotation__update_column_widths(struct annotation *notes);
void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);

static inline struct sym_hist *annotated_source__histogram(struct annotated_source *src, int idx)
{
	return ((void *)src->histograms) + (src->sizeof_sym_hist * idx);
}

static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
{
	return annotated_source__histogram(notes->src, idx);
}

static inline struct annotation *symbol__annotation(struct symbol *sym)
{
	return (void *)sym - symbol_conf.priv_size;
}

int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
				 struct perf_evsel *evsel);

int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
				    struct addr_map_symbol *start,
				    unsigned cycles);

int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
				 struct perf_evsel *evsel, u64 addr);

struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists);
void symbol__annotate_zero_histograms(struct symbol *sym);

int symbol__annotate(struct symbol *sym, struct map *map,
		     struct perf_evsel *evsel, size_t privsize,
		     struct annotation_options *options,
		     struct arch **parch);
int symbol__annotate2(struct symbol *sym, struct map *map,
		      struct perf_evsel *evsel,
		      struct annotation_options *options,
		      struct arch **parch);

enum symbol_disassemble_errno {
	SYMBOL_ANNOTATE_ERRNO__SUCCESS		= 0,

	/*
	 * Choose an arbitrary negative big number not to clash with standard
	 * errno since SUS requires the errno has distinct positive values.
	 * See 'Issue 6' in the link below.
	 *
	 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
	 */
	__SYMBOL_ANNOTATE_ERRNO__START		= -10000,

	SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX	= __SYMBOL_ANNOTATE_ERRNO__START,

	__SYMBOL_ANNOTATE_ERRNO__END,
};

int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
				 int errnum, char *buf, size_t buflen);

int symbol__annotate_printf(struct symbol *sym, struct map *map,
			    struct perf_evsel *evsel,
			    struct annotation_options *options);
int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp);
void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
void annotated_source__purge(struct annotated_source *as);

int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel);

bool ui__has_annotation(void);

int symbol__tty_annotate(struct symbol *sym, struct map *map,
			 struct perf_evsel *evsel, struct annotation_options *opts);

int symbol__tty_annotate2(struct symbol *sym, struct map *map,
			  struct perf_evsel *evsel, struct annotation_options *opts);

#ifdef HAVE_SLANG_SUPPORT
int symbol__tui_annotate(struct symbol *sym, struct map *map,
			 struct perf_evsel *evsel,
			 struct hist_browser_timer *hbt);
#else
static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
				struct map *map __maybe_unused,
				struct perf_evsel *evsel  __maybe_unused,
				struct hist_browser_timer *hbt
				__maybe_unused)
{
	return 0;
}
#endif

extern const char	*disassembler_style;

void annotation_config__init(void);

#endif	/* __PERF_ANNOTATE_H */
OpenPOWER on IntegriCloud