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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d5e3d74700
The live annotation done in 'perf top' needs to limit the context before lines that aren't filtered out by the min percent filter, if we don't do that, the screen in a tty often is not enough for showing what is interesting: lines with hits and a few source code lines before it. Reported-by: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#ifndef __PERF_ANNOTATE_H
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#define __PERF_ANNOTATE_H
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#include <stdbool.h>
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#include "types.h"
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#include "symbol.h"
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#include <linux/list.h>
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#include <linux/rbtree.h>
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struct objdump_line {
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struct list_head node;
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s64 offset;
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char *line;
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};
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void objdump_line__free(struct objdump_line *self);
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struct objdump_line *objdump__get_next_ip_line(struct list_head *head,
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struct objdump_line *pos);
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struct sym_hist {
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u64 sum;
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u64 addr[0];
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};
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struct source_line {
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struct rb_node node;
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double percent;
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char *path;
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};
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/** struct annotated_source - symbols with hits have this attached as in sannotation
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*
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* @histogram: Array of addr hit histograms per event being monitored
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* @lines: If 'print_lines' is specified, per source code line percentages
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* @source: source parsed from objdump -dS
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*
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* lines is allocated, percentages calculated and all sorted by percentage
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* when the annotation is about to be presented, so the percentages are for
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* one of the entries in the histogram array, i.e. for the event/counter being
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* presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
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* returns.
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*/
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struct annotated_source {
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struct list_head source;
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struct source_line *lines;
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int nr_histograms;
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int sizeof_sym_hist;
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struct sym_hist histograms[0];
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};
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struct annotation {
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pthread_mutex_t lock;
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struct annotated_source *src;
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};
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struct sannotation {
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struct annotation annotation;
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struct symbol symbol;
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};
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static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
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{
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return (((void *)¬es->src->histograms) +
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(notes->src->sizeof_sym_hist * idx));
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}
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static inline struct annotation *symbol__annotation(struct symbol *sym)
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{
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struct sannotation *a = container_of(sym, struct sannotation, symbol);
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return &a->annotation;
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}
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int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
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int evidx, u64 addr);
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int symbol__alloc_hist(struct symbol *sym, int nevents);
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void symbol__annotate_zero_histograms(struct symbol *sym);
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int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize);
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int symbol__annotate_init(struct map *map __used, struct symbol *sym);
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int symbol__annotate_printf(struct symbol *sym, struct map *map, int evidx,
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bool full_paths, int min_pcnt, int max_lines,
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int context);
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void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
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void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
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void objdump_line_list__purge(struct list_head *head);
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int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
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bool print_lines, bool full_paths, int min_pcnt,
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int max_lines);
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#ifdef NO_NEWT_SUPPORT
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static inline int symbol__tui_annotate(struct symbol *sym __used,
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struct map *map __used, int evidx __used)
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{
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return 0;
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}
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#else
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int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx);
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#endif
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#endif /* __PERF_ANNOTATE_H */
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