cregit-Linux how code gets into the kernel

Release 4.17 tools/perf/util/annotate.h

Directory: tools/perf/util
/* 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


struct annotation_options {
	
bool hide_src_code,
	     
use_offset,
	     
jump_arrows,
	     
show_linenr,
	     
show_nr_jumps,
	     
show_nr_samples,
	     
show_total_period;
	
u8   offset_level;
};


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;
	
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; }

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/* * 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; }

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/* * 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); }

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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; 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 * * @histogram: Array of addr hit histograms per event being monitored * @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[0]; }; 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) { return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0; }

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

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

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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 *annotation__histogram(struct annotation *notes, int idx) { return (((void *)&notes->src->histograms) + (notes->src->sizeof_sym_hist * idx)); }

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

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Arnaldo Carvalho de Melo1664.00%150.00%
Namhyung Kim936.00%150.00%
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int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, int evidx); 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, int evidx, u64 addr); int symbol__alloc_hist(struct symbol *sym); 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 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, bool full_paths, int min_pcnt, int max_lines, int context); 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, bool print_lines, bool full_paths, int min_pcnt, int max_lines); int symbol__tty_annotate2(struct symbol *sym, struct map *map, struct perf_evsel *evsel, bool print_lines, bool full_paths); #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; }

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Namhyung Kim1750.00%250.00%
Arnaldo Carvalho de Melo1338.24%125.00%
Irina Tirdea411.76%125.00%
Total34100.00%4100.00%

#endif extern const char *disassembler_style; void annotation_config__init(void); #endif /* __PERF_ANNOTATE_H */

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Arnaldo Carvalho de Melo118777.68%5860.42%
Jiri Olsa1318.57%1414.58%
Namhyung Kim754.91%77.29%
Andi Kleen563.66%22.08%
Jin Yao352.29%33.12%
Taeung Song161.05%44.17%
Naveen N. Rao100.65%11.04%
Irina Tirdea70.46%22.08%
Ravi Bangoria50.33%11.04%
Peter Zijlstra30.20%11.04%
Ingo Molnar10.07%11.04%
Borislav Petkov10.07%11.04%
Greg Kroah-Hartman10.07%11.04%
Total1528100.00%96100.00%
Directory: tools/perf/util
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