linux/tools/perf/util/annotate.h
Namhyung Kim 48c65bda95 perf annotate: Check availability of annotate when processing samples
The TUI of perf report and top support annotation, but stdio and GTK
don't.  So it should be checked before calling hist_entry__inc_addr_
samples() to avoid wasting resources that will never be used.

perf annotate need it regardless of UI and sort keys, so the check
of whether to allocate resources should be on the tools that have
annotate as an option in the TUI, 'report' and 'top', not on the
function called by all of them.

It caused perf annotate on ppc64 to produce zero output, since the
buckets were not being allocated.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1392859976-32760-1-git-send-email-namhyung@kernel.org
[ Renamed (report,top)__needs_annotate() to ui__has_annotation() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-02-24 11:12:55 -03:00

178 lines
4.6 KiB
C

#ifndef __PERF_ANNOTATE_H
#define __PERF_ANNOTATE_H
#include <stdbool.h>
#include <stdint.h>
#include "types.h"
#include "symbol.h"
#include "hist.h"
#include "sort.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <pthread.h>
struct ins;
struct ins_operands {
char *raw;
struct {
char *raw;
char *name;
u64 addr;
u64 offset;
} target;
union {
struct {
char *raw;
char *name;
u64 addr;
} source;
struct {
struct ins *ins;
struct ins_operands *ops;
} locked;
};
};
struct ins_ops {
void (*free)(struct ins_operands *ops);
int (*parse)(struct ins_operands *ops);
int (*scnprintf)(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops);
};
struct ins {
const char *name;
struct ins_ops *ops;
};
bool ins__is_jump(const struct ins *ins);
bool ins__is_call(const struct ins *ins);
int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
struct annotation;
struct disasm_line {
struct list_head node;
s64 offset;
char *line;
char *name;
struct ins *ins;
struct ins_operands ops;
};
static inline bool disasm_line__has_offset(const struct disasm_line *dl)
{
return dl->ops.target.offset != UINT64_MAX;
}
void disasm_line__free(struct disasm_line *dl);
struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos);
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);
double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
s64 end, const char **path);
struct sym_hist {
u64 sum;
u64 addr[0];
};
struct source_line_percent {
double percent;
double percent_sum;
};
struct source_line {
struct rb_node node;
char *path;
int nr_pcnt;
struct source_line_percent p[1];
};
/** 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
*
* 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;
struct source_line *lines;
int nr_histograms;
int sizeof_sym_hist;
struct sym_hist histograms[0];
};
struct annotation {
pthread_mutex_t lock;
struct annotated_source *src;
};
struct sannotation {
struct annotation annotation;
struct symbol symbol;
};
static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
{
return (((void *)&notes->src->histograms) +
(notes->src->sizeof_sym_hist * idx));
}
static inline struct annotation *symbol__annotation(struct symbol *sym)
{
struct sannotation *a = container_of(sym, struct sannotation, symbol);
return &a->annotation;
}
int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx);
int hist_entry__inc_addr_samples(struct hist_entry *he, 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, size_t privsize);
int hist_entry__annotate(struct hist_entry *he, size_t privsize);
int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym);
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);
void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
void disasm__purge(struct list_head *head);
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);
#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;
#endif /* __PERF_ANNOTATE_H */