mirror of https://gitee.com/openkylin/linux.git
374 lines
9.5 KiB
C
374 lines
9.5 KiB
C
#ifndef __PERF_SYMBOL
|
|
#define __PERF_SYMBOL 1
|
|
|
|
#include <linux/types.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include "map.h"
|
|
#include "../perf.h"
|
|
#include <linux/list.h>
|
|
#include <linux/rbtree.h>
|
|
#include <stdio.h>
|
|
#include <byteswap.h>
|
|
#include <libgen.h>
|
|
#include "build-id.h"
|
|
#include "event.h"
|
|
#include "util.h"
|
|
|
|
#ifdef HAVE_LIBELF_SUPPORT
|
|
#include <libelf.h>
|
|
#include <gelf.h>
|
|
#endif
|
|
#include <elf.h>
|
|
|
|
#include "dso.h"
|
|
|
|
/*
|
|
* libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
|
|
* for newer versions we can use mmap to reduce memory usage:
|
|
*/
|
|
#ifdef HAVE_LIBELF_MMAP_SUPPORT
|
|
# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
|
|
#else
|
|
# define PERF_ELF_C_READ_MMAP ELF_C_READ
|
|
#endif
|
|
|
|
#ifdef HAVE_LIBELF_SUPPORT
|
|
Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
|
|
GElf_Shdr *shp, const char *name, size_t *idx);
|
|
#endif
|
|
|
|
#ifndef DMGL_PARAMS
|
|
#define DMGL_NO_OPTS 0 /* For readability... */
|
|
#define DMGL_PARAMS (1 << 0) /* Include function args */
|
|
#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
|
|
#endif
|
|
|
|
#define DSO__NAME_KALLSYMS "[kernel.kallsyms]"
|
|
#define DSO__NAME_KCORE "[kernel.kcore]"
|
|
|
|
/** struct symbol - symtab entry
|
|
*
|
|
* @ignore - resolvable but tools ignore it (e.g. idle routines)
|
|
*/
|
|
struct symbol {
|
|
struct rb_node rb_node;
|
|
u64 start;
|
|
u64 end;
|
|
u16 namelen;
|
|
u8 binding;
|
|
u8 idle:1;
|
|
u8 ignore:1;
|
|
u8 arch_sym;
|
|
char name[0];
|
|
};
|
|
|
|
void symbol__delete(struct symbol *sym);
|
|
void symbols__delete(struct rb_root *symbols);
|
|
|
|
/* symbols__for_each_entry - iterate over symbols (rb_root)
|
|
*
|
|
* @symbols: the rb_root of symbols
|
|
* @pos: the 'struct symbol *' to use as a loop cursor
|
|
* @nd: the 'struct rb_node *' to use as a temporary storage
|
|
*/
|
|
#define symbols__for_each_entry(symbols, pos, nd) \
|
|
for (nd = rb_first(symbols); \
|
|
nd && (pos = rb_entry(nd, struct symbol, rb_node)); \
|
|
nd = rb_next(nd))
|
|
|
|
static inline size_t symbol__size(const struct symbol *sym)
|
|
{
|
|
return sym->end - sym->start;
|
|
}
|
|
|
|
struct strlist;
|
|
struct intlist;
|
|
|
|
struct symbol_conf {
|
|
unsigned short priv_size;
|
|
unsigned short nr_events;
|
|
bool try_vmlinux_path,
|
|
init_annotation,
|
|
force,
|
|
ignore_vmlinux,
|
|
ignore_vmlinux_buildid,
|
|
show_kernel_path,
|
|
use_modules,
|
|
allow_aliases,
|
|
sort_by_name,
|
|
show_nr_samples,
|
|
show_total_period,
|
|
use_callchain,
|
|
cumulate_callchain,
|
|
show_branchflag_count,
|
|
exclude_other,
|
|
show_cpu_utilization,
|
|
initialized,
|
|
kptr_restrict,
|
|
annotate_asm_raw,
|
|
annotate_src,
|
|
event_group,
|
|
demangle,
|
|
demangle_kernel,
|
|
filter_relative,
|
|
show_hist_headers,
|
|
branch_callstack,
|
|
has_filter,
|
|
show_ref_callgraph,
|
|
hide_unresolved,
|
|
raw_trace,
|
|
report_hierarchy;
|
|
const char *vmlinux_name,
|
|
*kallsyms_name,
|
|
*source_prefix,
|
|
*field_sep;
|
|
const char *default_guest_vmlinux_name,
|
|
*default_guest_kallsyms,
|
|
*default_guest_modules;
|
|
const char *guestmount;
|
|
const char *dso_list_str,
|
|
*comm_list_str,
|
|
*pid_list_str,
|
|
*tid_list_str,
|
|
*sym_list_str,
|
|
*col_width_list_str,
|
|
*bt_stop_list_str;
|
|
struct strlist *dso_list,
|
|
*comm_list,
|
|
*sym_list,
|
|
*dso_from_list,
|
|
*dso_to_list,
|
|
*sym_from_list,
|
|
*sym_to_list,
|
|
*bt_stop_list;
|
|
struct intlist *pid_list,
|
|
*tid_list;
|
|
const char *symfs;
|
|
};
|
|
|
|
extern struct symbol_conf symbol_conf;
|
|
|
|
struct symbol_name_rb_node {
|
|
struct rb_node rb_node;
|
|
struct symbol sym;
|
|
};
|
|
|
|
static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
|
|
{
|
|
return path__join(bf, size, symbol_conf.symfs, path);
|
|
}
|
|
|
|
#define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
|
|
|
|
extern int vmlinux_path__nr_entries;
|
|
extern char **vmlinux_path;
|
|
|
|
static inline void *symbol__priv(struct symbol *sym)
|
|
{
|
|
return ((void *)sym) - symbol_conf.priv_size;
|
|
}
|
|
|
|
struct ref_reloc_sym {
|
|
const char *name;
|
|
u64 addr;
|
|
u64 unrelocated_addr;
|
|
};
|
|
|
|
struct map_symbol {
|
|
struct map *map;
|
|
struct symbol *sym;
|
|
};
|
|
|
|
struct addr_map_symbol {
|
|
struct map *map;
|
|
struct symbol *sym;
|
|
u64 addr;
|
|
u64 al_addr;
|
|
};
|
|
|
|
struct branch_info {
|
|
struct addr_map_symbol from;
|
|
struct addr_map_symbol to;
|
|
struct branch_flags flags;
|
|
char *srcline_from;
|
|
char *srcline_to;
|
|
};
|
|
|
|
struct mem_info {
|
|
struct addr_map_symbol iaddr;
|
|
struct addr_map_symbol daddr;
|
|
union perf_mem_data_src data_src;
|
|
};
|
|
|
|
struct addr_location {
|
|
struct machine *machine;
|
|
struct thread *thread;
|
|
struct map *map;
|
|
struct symbol *sym;
|
|
u64 addr;
|
|
char level;
|
|
u8 filtered;
|
|
u8 cpumode;
|
|
s32 cpu;
|
|
s32 socket;
|
|
};
|
|
|
|
struct symsrc {
|
|
char *name;
|
|
int fd;
|
|
enum dso_binary_type type;
|
|
|
|
#ifdef HAVE_LIBELF_SUPPORT
|
|
Elf *elf;
|
|
GElf_Ehdr ehdr;
|
|
|
|
Elf_Scn *opdsec;
|
|
size_t opdidx;
|
|
GElf_Shdr opdshdr;
|
|
|
|
Elf_Scn *symtab;
|
|
GElf_Shdr symshdr;
|
|
|
|
Elf_Scn *dynsym;
|
|
size_t dynsym_idx;
|
|
GElf_Shdr dynshdr;
|
|
|
|
bool adjust_symbols;
|
|
bool is_64_bit;
|
|
#endif
|
|
};
|
|
|
|
void symsrc__destroy(struct symsrc *ss);
|
|
int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
|
|
enum dso_binary_type type);
|
|
bool symsrc__has_symtab(struct symsrc *ss);
|
|
bool symsrc__possibly_runtime(struct symsrc *ss);
|
|
|
|
int dso__load(struct dso *dso, struct map *map);
|
|
int dso__load_vmlinux(struct dso *dso, struct map *map,
|
|
const char *vmlinux, bool vmlinux_allocated);
|
|
int dso__load_vmlinux_path(struct dso *dso, struct map *map);
|
|
int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
|
|
bool no_kcore);
|
|
int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
|
|
|
|
void dso__insert_symbol(struct dso *dso, enum map_type type,
|
|
struct symbol *sym);
|
|
|
|
struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
|
|
u64 addr);
|
|
struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
|
|
const char *name);
|
|
struct symbol *symbol__next_by_name(struct symbol *sym);
|
|
|
|
struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
|
|
struct symbol *dso__last_symbol(struct dso *dso, enum map_type type);
|
|
struct symbol *dso__next_symbol(struct symbol *sym);
|
|
|
|
enum dso_type dso__type_fd(int fd);
|
|
|
|
int filename__read_build_id(const char *filename, void *bf, size_t size);
|
|
int sysfs__read_build_id(const char *filename, void *bf, size_t size);
|
|
int modules__parse(const char *filename, void *arg,
|
|
int (*process_module)(void *arg, const char *name,
|
|
u64 start));
|
|
int filename__read_debuglink(const char *filename, char *debuglink,
|
|
size_t size);
|
|
|
|
struct perf_env;
|
|
int symbol__init(struct perf_env *env);
|
|
void symbol__exit(void);
|
|
void symbol__elf_init(void);
|
|
int symbol__annotation_init(void);
|
|
|
|
struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
|
|
size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
|
|
const struct addr_location *al,
|
|
bool unknown_as_addr,
|
|
bool print_offsets, FILE *fp);
|
|
size_t symbol__fprintf_symname_offs(const struct symbol *sym,
|
|
const struct addr_location *al, FILE *fp);
|
|
size_t __symbol__fprintf_symname(const struct symbol *sym,
|
|
const struct addr_location *al,
|
|
bool unknown_as_addr, FILE *fp);
|
|
size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
|
|
size_t symbol__fprintf(struct symbol *sym, FILE *fp);
|
|
bool symbol_type__is_a(char symbol_type, enum map_type map_type);
|
|
bool symbol__restricted_filename(const char *filename,
|
|
const char *restricted_filename);
|
|
int symbol__config_symfs(const struct option *opt __maybe_unused,
|
|
const char *dir, int unset __maybe_unused);
|
|
|
|
int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
|
|
struct symsrc *runtime_ss, int kmodule);
|
|
int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
|
|
struct map *map);
|
|
|
|
void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
|
|
void symbols__insert(struct rb_root *symbols, struct symbol *sym);
|
|
void symbols__fixup_duplicate(struct rb_root *symbols);
|
|
void symbols__fixup_end(struct rb_root *symbols);
|
|
void __map_groups__fixup_end(struct map_groups *mg, enum map_type type);
|
|
|
|
typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
|
|
int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
|
|
bool *is_64_bit);
|
|
|
|
#define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
|
|
|
|
struct kcore_extract {
|
|
char *kcore_filename;
|
|
u64 addr;
|
|
u64 offs;
|
|
u64 len;
|
|
char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
|
|
int fd;
|
|
};
|
|
|
|
int kcore_extract__create(struct kcore_extract *kce);
|
|
void kcore_extract__delete(struct kcore_extract *kce);
|
|
|
|
int kcore_copy(const char *from_dir, const char *to_dir);
|
|
int compare_proc_modules(const char *from, const char *to);
|
|
|
|
int setup_list(struct strlist **list, const char *list_str,
|
|
const char *list_name);
|
|
int setup_intlist(struct intlist **list, const char *list_str,
|
|
const char *list_name);
|
|
|
|
#ifdef HAVE_LIBELF_SUPPORT
|
|
bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
|
|
void arch__sym_update(struct symbol *s, GElf_Sym *sym);
|
|
#endif
|
|
|
|
#define SYMBOL_A 0
|
|
#define SYMBOL_B 1
|
|
|
|
int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
|
|
|
|
/* structure containing an SDT note's info */
|
|
struct sdt_note {
|
|
char *name; /* name of the note*/
|
|
char *provider; /* provider name */
|
|
char *args;
|
|
bool bit32; /* whether the location is 32 bits? */
|
|
union { /* location, base and semaphore addrs */
|
|
Elf64_Addr a64[3];
|
|
Elf32_Addr a32[3];
|
|
} addr;
|
|
struct list_head note_list; /* SDT notes' list */
|
|
};
|
|
|
|
int get_sdt_note_list(struct list_head *head, const char *target);
|
|
int cleanup_sdt_note_list(struct list_head *sdt_notes);
|
|
int sdt_notes__get_count(struct list_head *start);
|
|
|
|
#define SDT_BASE_SCN ".stapsdt.base"
|
|
#define SDT_NOTE_SCN ".note.stapsdt"
|
|
#define SDT_NOTE_TYPE 3
|
|
#define SDT_NOTE_NAME "stapsdt"
|
|
#define NR_ADDR 3
|
|
|
|
#endif /* __PERF_SYMBOL */
|