- 根目录:
- tools
- perf
- util
- dso.h
#ifndef __PERF_DSO
#define __PERF_DSO
#include <linux/types.h>
#include <linux/rbtree.h>
#include <stdbool.h>
#include <linux/types.h>
#include <linux/bitops.h>
#include "map.h"
#include "build-id.h"
enum dso_binary_type {
DSO_BINARY_TYPE__KALLSYMS = 0,
DSO_BINARY_TYPE__GUEST_KALLSYMS,
DSO_BINARY_TYPE__VMLINUX,
DSO_BINARY_TYPE__GUEST_VMLINUX,
DSO_BINARY_TYPE__JAVA_JIT,
DSO_BINARY_TYPE__DEBUGLINK,
DSO_BINARY_TYPE__BUILD_ID_CACHE,
DSO_BINARY_TYPE__FEDORA_DEBUGINFO,
DSO_BINARY_TYPE__UBUNTU_DEBUGINFO,
DSO_BINARY_TYPE__BUILDID_DEBUGINFO,
DSO_BINARY_TYPE__SYSTEM_PATH_DSO,
DSO_BINARY_TYPE__GUEST_KMODULE,
DSO_BINARY_TYPE__GUEST_KMODULE_COMP,
DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE,
DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP,
DSO_BINARY_TYPE__KCORE,
DSO_BINARY_TYPE__GUEST_KCORE,
DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO,
DSO_BINARY_TYPE__NOT_FOUND,
};
enum dso_kernel_type {
DSO_TYPE_USER = 0,
DSO_TYPE_KERNEL,
DSO_TYPE_GUEST_KERNEL
};
enum dso_swap_type {
DSO_SWAP__UNSET,
DSO_SWAP__NO,
DSO_SWAP__YES,
};
enum dso_data_status {
DSO_DATA_STATUS_ERROR = -1,
DSO_DATA_STATUS_UNKNOWN = 0,
DSO_DATA_STATUS_OK = 1,
};
enum dso_data_status_seen {
DSO_DATA_STATUS_SEEN_ITRACE,
};
enum dso_type {
DSO__TYPE_UNKNOWN,
DSO__TYPE_64BIT,
DSO__TYPE_32BIT,
DSO__TYPE_X32BIT,
};
enum dso_load_errno {
DSO_LOAD_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
*/
__DSO_LOAD_ERRNO__START = -10000,
DSO_LOAD_ERRNO__INTERNAL_ERROR = __DSO_LOAD_ERRNO__START,
/* for symsrc__init() */
DSO_LOAD_ERRNO__INVALID_ELF,
DSO_LOAD_ERRNO__CANNOT_READ_BUILDID,
DSO_LOAD_ERRNO__MISMATCHING_BUILDID,
/* for decompress_kmodule */
DSO_LOAD_ERRNO__DECOMPRESSION_FAILURE,
__DSO_LOAD_ERRNO__END,
};
#define DSO__SWAP(dso, type, val) \
({ \
type ____r = val; \
BUG_ON(dso->needs_swap == DSO_SWAP__UNSET); \
if (dso->needs_swap == DSO_SWAP__YES) { \
switch (sizeof(____r)) { \
case 2: \
____r = bswap_16(val); \
break; \
case 4: \
____r = bswap_32(val); \
break; \
case 8: \
____r = bswap_64(val); \
break; \
default: \
BUG_ON(1); \
} \
} \
____r; \
})
#define DSO__DATA_CACHE_SIZE 4096
#define DSO__DATA_CACHE_MASK ~(DSO__DATA_CACHE_SIZE - 1)
struct dso_cache {
struct rb_node rb_node;
u64 offset;
u64 size;
char data[0];
};
/*
* DSOs are put into both a list for fast iteration and rbtree for fast
* long name lookup.
*/
struct dsos {
struct list_head head;
struct rb_root root; /* rbtree root sorted by long name */
};
struct dso {
struct list_head node;
struct rb_node rb_node; /* rbtree node sorted by long name */
struct rb_root symbols[MAP__NR_TYPES];
struct rb_root symbol_names[MAP__NR_TYPES];
void *a2l;
char *symsrc_filename;
unsigned int a2l_fails;
enum dso_kernel_type kernel;
enum dso_swap_type needs_swap;
enum dso_binary_type symtab_type;
enum dso_binary_type binary_type;
enum dso_load_errno load_errno;
u8 adjust_symbols:1;
u8 has_build_id:1;
u8 has_srcline:1;
u8 hit:1;
u8 annotate_warned:1;
u8 short_name_allocated:1;
u8 long_name_allocated:1;
u8 is_64_bit:1;
u8 sorted_by_name;
u8 loaded;
u8 rel;
u8 build_id[BUILD_ID_SIZE];
const char *short_name;
const char *long_name;
u16 long_name_len;
u16 short_name_len;
void *dwfl; /* DWARF debug info */
/* dso data file */
struct {
struct rb_root cache;
int fd;
int status;
u32 status_seen;
size_t file_size;
struct list_head open_entry;
u64 debug_frame_offset;
u64 eh_frame_hdr_offset;
} data;
union { /* Tool specific area */
void *priv;
u64 db_id;
};
char name[0];
};
/* dso__for_each_symbol - iterate over the symbols of given type
*
* @dso: the 'struct dso *' in which symbols itereated
* @pos: the 'struct symbol *' to use as a loop cursor
* @n: the 'struct rb_node *' to use as a temporary storage
* @type: the 'enum map_type' type of symbols
*/
#define dso__for_each_symbol(dso, pos, n, type) \
symbols__for_each_entry(&(dso)->symbols[(type)], pos, n)
static inline void dso__set_loaded(struct dso *dso, enum map_type type)
{
dso->loaded |= (1 << type);
}
struct dso *dso__new(const char *name);
void dso__delete(struct dso *dso);
void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated);
void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated);
int dso__name_len(const struct dso *dso);
bool dso__loaded(const struct dso *dso, enum map_type type);
bool dso__sorted_by_name(const struct dso *dso, enum map_type type);
void dso__set_sorted_by_name(struct dso *dso, enum map_type type);
void dso__sort_by_name(struct dso *dso, enum map_type type);
void dso__set_build_id(struct dso *dso, void *build_id);
bool dso__build_id_equal(const struct dso *dso, u8 *build_id);
void dso__read_running_kernel_build_id(struct dso *dso,
struct machine *machine);
int dso__kernel_module_get_build_id(struct dso *dso, const char *root_dir);
char dso__symtab_origin(const struct dso *dso);
int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type type,
char *root_dir, char *filename, size_t size);
bool is_supported_compression(const char *ext);
bool is_kernel_module(const char *pathname);
bool decompress_to_file(const char *ext, const char *filename, int output_fd);
bool dso__needs_decompress(struct dso *dso);
struct kmod_path {
char *name;
char *ext;
bool comp;
bool kmod;
};
int __kmod_path__parse(struct kmod_path *m, const char *path,
bool alloc_name, bool alloc_ext);
#define kmod_path__parse(__m, __p) __kmod_path__parse(__m, __p, false, false)
#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
#define kmod_path__parse_ext(__m, __p) __kmod_path__parse(__m, __p, false, true)
/*
* The dso__data_* external interface provides following functions:
* dso__data_fd
* dso__data_close
* dso__data_size
* dso__data_read_offset
* dso__data_read_addr
*
* Please refer to the dso.c object code for each function and
* arguments documentation. Following text tries to explain the
* dso file descriptor caching.
*
* The dso__data* interface allows caching of opened file descriptors
* to speed up the dso data accesses. The idea is to leave the file
* descriptor opened ideally for the whole life of the dso object.
*
* The current usage of the dso__data_* interface is as follows:
*
* Get DSO's fd:
* int fd = dso__data_fd(dso, machine);
* USE 'fd' SOMEHOW
*
* Read DSO's data:
* n = dso__data_read_offset(dso_0, &machine, 0, buf, BUFSIZE);
* n = dso__data_read_addr(dso_0, &machine, 0, buf, BUFSIZE);
*
* Eventually close DSO's fd:
* dso__data_close(dso);
*
* It is not necessary to close the DSO object data file. Each time new
* DSO data file is opened, the limit (RLIMIT_NOFILE/2) is checked. Once
* it is crossed, the oldest opened DSO object is closed.
*
* The dso__delete function calls close_dso function to ensure the
* data file descriptor gets closed/unmapped before the dso object
* is freed.
*
* TODO
*/
int dso__data_fd(struct dso *dso, struct machine *machine);
void dso__data_close(struct dso *dso);
off_t dso__data_size(struct dso *dso, struct machine *machine);
ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
u64 offset, u8 *data, ssize_t size);
ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
struct machine *machine, u64 addr,
u8 *data, ssize_t size);
bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by);
struct map *dso__new_map(const char *name);
struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
const char *short_name, int dso_type);
void dsos__add(struct dsos *dsos, struct dso *dso);
struct dso *dsos__addnew(struct dsos *dsos, const char *name);
struct dso *dsos__find(const struct dsos *dsos, const char *name,
bool cmp_short);
struct dso *__dsos__findnew(struct dsos *dsos, const char *name);
bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm);
size_t __dsos__fprintf(struct list_head *head, FILE *fp);
size_t dso__fprintf_buildid(struct dso *dso, FILE *fp);
size_t dso__fprintf_symbols_by_name(struct dso *dso,
enum map_type type, FILE *fp);
size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp);
static inline bool dso__is_vmlinux(struct dso *dso)
{
return dso->binary_type == DSO_BINARY_TYPE__VMLINUX ||
dso->binary_type == DSO_BINARY_TYPE__GUEST_VMLINUX;
}
static inline bool dso__is_kcore(struct dso *dso)
{
return dso->binary_type == DSO_BINARY_TYPE__KCORE ||
dso->binary_type == DSO_BINARY_TYPE__GUEST_KCORE;
}
void dso__free_a2l(struct dso *dso);
enum dso_type dso__type(struct dso *dso, struct machine *machine);
int dso__strerror_load(struct dso *dso, char *buf, size_t buflen);
#endif /* __PERF_DSO */