mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 12:21:37 +00:00
0131c4ec79
The new "object code reading" test shows that it is not possible to read object code from kernel modules. That is because the mappings do not map to the dsos. This patch fixes that. This involves identifying and flagging relocatable (ELF type ET_REL) files (e.g. kernel modules) for symbol adjustment and updating map__rip_2objdump() accordingly. The kmodule parameter of dso__load_sym() is taken into use and the module map altered to map to the dso. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375875537-4509-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
#ifndef __PERF_DSO
|
|
#define __PERF_DSO
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/rbtree.h>
|
|
#include <stdbool.h>
|
|
#include "types.h"
|
|
#include "map.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__SYSTEM_PATH_KMODULE,
|
|
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,
|
|
};
|
|
|
|
#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];
|
|
};
|
|
|
|
struct dso {
|
|
struct list_head node;
|
|
struct rb_root symbols[MAP__NR_TYPES];
|
|
struct rb_root symbol_names[MAP__NR_TYPES];
|
|
struct rb_root cache;
|
|
enum dso_kernel_type kernel;
|
|
enum dso_swap_type needs_swap;
|
|
enum dso_binary_type symtab_type;
|
|
enum dso_binary_type data_type;
|
|
u8 adjust_symbols:1;
|
|
u8 has_build_id:1;
|
|
u8 hit:1;
|
|
u8 annotate_warned:1;
|
|
u8 sname_alloc:1;
|
|
u8 lname_alloc:1;
|
|
u8 sorted_by_name;
|
|
u8 loaded;
|
|
u8 rel;
|
|
u8 build_id[BUILD_ID_SIZE];
|
|
const char *short_name;
|
|
char *long_name;
|
|
u16 long_name_len;
|
|
u16 short_name_len;
|
|
char name[0];
|
|
};
|
|
|
|
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);
|
|
void dso__set_long_name(struct dso *dso, char *name);
|
|
|
|
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__binary_type_file(struct dso *dso, enum dso_binary_type type,
|
|
char *root_dir, char *file, size_t size);
|
|
|
|
int dso__data_fd(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);
|
|
|
|
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 list_head *head, struct dso *dso);
|
|
struct dso *dsos__find(struct list_head *head, const char *name,
|
|
bool cmp_short);
|
|
struct dso *__dsos__findnew(struct list_head *head, 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->data_type == DSO_BINARY_TYPE__VMLINUX ||
|
|
dso->data_type == DSO_BINARY_TYPE__GUEST_VMLINUX;
|
|
}
|
|
|
|
#endif /* __PERF_DSO */
|