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![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
When profiling C++ workloads the symbol name length can be really big, so cap it before it garbles the result. This builds upon the autosizing already present where we choose to use the short, basename of DSOs instead of its long, full pathname. Reported-by: Pavel Krauz <krauz@cngroup.cz> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1268676230-9261-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
172 lines
4.3 KiB
C
172 lines
4.3 KiB
C
#ifndef __PERF_SYMBOL
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#define __PERF_SYMBOL 1
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#include <linux/types.h>
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#include <stdbool.h>
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#include "types.h"
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include "event.h"
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#define DEBUG_CACHE_DIR ".debug"
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#ifdef HAVE_CPLUS_DEMANGLE
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extern char *cplus_demangle(const char *, int);
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static inline char *bfd_demangle(void __used *v, const char *c, int i)
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{
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return cplus_demangle(c, i);
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}
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#else
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#ifdef NO_DEMANGLE
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static inline char *bfd_demangle(void __used *v, const char __used *c,
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int __used i)
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{
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return NULL;
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}
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#else
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#include <bfd.h>
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#endif
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#endif
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/*
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* libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
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* for newer versions we can use mmap to reduce memory usage:
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*/
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#ifdef LIBELF_NO_MMAP
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# define PERF_ELF_C_READ_MMAP ELF_C_READ
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#else
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# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
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#endif
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#ifndef DMGL_PARAMS
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#define DMGL_PARAMS (1 << 0) /* Include function args */
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#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
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#endif
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struct symbol {
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struct rb_node rb_node;
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u64 start;
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u64 end;
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char name[0];
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};
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void symbol__delete(struct symbol *self);
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struct strlist;
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struct symbol_conf {
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unsigned short priv_size;
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bool try_vmlinux_path,
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use_modules,
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sort_by_name,
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show_nr_samples,
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use_callchain,
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exclude_other,
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full_paths;
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const char *vmlinux_name,
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*field_sep;
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char *dso_list_str,
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*comm_list_str,
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*sym_list_str,
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*col_width_list_str;
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struct strlist *dso_list,
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*comm_list,
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*sym_list;
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};
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extern struct symbol_conf symbol_conf;
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static inline void *symbol__priv(struct symbol *self)
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{
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return ((void *)self) - symbol_conf.priv_size;
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}
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struct ref_reloc_sym {
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const char *name;
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u64 addr;
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u64 unrelocated_addr;
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};
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struct addr_location {
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struct thread *thread;
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struct map *map;
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struct symbol *sym;
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u64 addr;
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char level;
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bool filtered;
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};
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struct dso {
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struct list_head node;
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struct rb_root symbols[MAP__NR_TYPES];
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struct rb_root symbol_names[MAP__NR_TYPES];
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u8 adjust_symbols:1;
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u8 slen_calculated:1;
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u8 has_build_id:1;
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u8 kernel:1;
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u8 hit:1;
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unsigned char origin;
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u8 sorted_by_name;
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u8 loaded;
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u8 build_id[BUILD_ID_SIZE];
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const char *short_name;
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char *long_name;
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u16 long_name_len;
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u16 short_name_len;
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char name[0];
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};
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struct dso *dso__new(const char *name);
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struct dso *dso__new_kernel(const char *name);
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void dso__delete(struct dso *self);
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bool dso__loaded(const struct dso *self, enum map_type type);
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bool dso__sorted_by_name(const struct dso *self, enum map_type type);
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static inline void dso__set_loaded(struct dso *self, enum map_type type)
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{
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self->loaded |= (1 << type);
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}
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void dso__sort_by_name(struct dso *self, enum map_type type);
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extern struct list_head dsos__user, dsos__kernel;
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struct dso *__dsos__findnew(struct list_head *head, const char *name);
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static inline struct dso *dsos__findnew(const char *name)
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{
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return __dsos__findnew(&dsos__user, name);
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}
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int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
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int dso__load_vmlinux_path(struct dso *self, struct map *map,
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symbol_filter_t filter);
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int dso__load_kallsyms(struct dso *self, const char *filename, struct map *map,
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symbol_filter_t filter);
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void dsos__fprintf(FILE *fp);
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size_t dsos__fprintf_buildid(FILE *fp, bool with_hits);
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size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
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size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp);
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char dso__symtab_origin(const struct dso *self);
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void dso__set_long_name(struct dso *self, char *name);
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void dso__set_build_id(struct dso *self, void *build_id);
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void dso__read_running_kernel_build_id(struct dso *self);
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struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr);
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struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type,
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const char *name);
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int filename__read_build_id(const char *filename, void *bf, size_t size);
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int sysfs__read_build_id(const char *filename, void *bf, size_t size);
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bool dsos__read_build_ids(bool with_hits);
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int build_id__sprintf(const u8 *self, int len, char *bf);
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int kallsyms__parse(const char *filename, void *arg,
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int (*process_symbol)(void *arg, const char *name,
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char type, u64 start));
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int symbol__init(void);
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bool symbol_type__is_a(char symbol_type, enum map_type map_type);
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#endif /* __PERF_SYMBOL */
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