![Adrian Hunter](/assets/img/avatar_default.png)
Intel PT uses TSC as a timestamp, so add support for using TSC instead of the monotonic clock. Use of TSC is selected by an environment variable "JITDUMP_USE_ARCH_TIMESTAMP" and flagged in the jitdump file with flag JITDUMP_FLAGS_ARCH_TIMESTAMP. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: He Kuang <hekuang@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1457426330-30226-1-git-send-email-adrian.hunter@intel.com [ Added the fixup from He Kuang to make it build on other arches, ] [ such as aarch64, to avoid inserting this bisectiong breakage upstream ] Link: http://lkml.kernel.org/r/1459482572-129494-1-git-send-email-hekuang@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
128 lines
2.5 KiB
C
128 lines
2.5 KiB
C
/*
|
|
* jitdump.h: jitted code info encapsulation file format
|
|
*
|
|
* Adapted from OProfile GPLv2 support jidump.h:
|
|
* Copyright 2007 OProfile authors
|
|
* Jens Wilke
|
|
* Daniel Hansel
|
|
* Copyright IBM Corporation 2007
|
|
*/
|
|
#ifndef JITDUMP_H
|
|
#define JITDUMP_H
|
|
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
#include <stdint.h>
|
|
|
|
/* JiTD */
|
|
#define JITHEADER_MAGIC 0x4A695444
|
|
#define JITHEADER_MAGIC_SW 0x4454694A
|
|
|
|
#define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7)
|
|
|
|
#define JITHEADER_VERSION 1
|
|
|
|
enum jitdump_flags_bits {
|
|
JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
|
|
JITDUMP_FLAGS_MAX_BIT,
|
|
};
|
|
|
|
#define JITDUMP_FLAGS_ARCH_TIMESTAMP (1ULL << JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT)
|
|
|
|
#define JITDUMP_FLAGS_RESERVED (JITDUMP_FLAGS_MAX_BIT < 64 ? \
|
|
(~((1ULL << JITDUMP_FLAGS_MAX_BIT) - 1)) : 0)
|
|
|
|
struct jitheader {
|
|
uint32_t magic; /* characters "jItD" */
|
|
uint32_t version; /* header version */
|
|
uint32_t total_size; /* total size of header */
|
|
uint32_t elf_mach; /* elf mach target */
|
|
uint32_t pad1; /* reserved */
|
|
uint32_t pid; /* JIT process id */
|
|
uint64_t timestamp; /* timestamp */
|
|
uint64_t flags; /* flags */
|
|
};
|
|
|
|
enum jit_record_type {
|
|
JIT_CODE_LOAD = 0,
|
|
JIT_CODE_MOVE = 1,
|
|
JIT_CODE_DEBUG_INFO = 2,
|
|
JIT_CODE_CLOSE = 3,
|
|
|
|
JIT_CODE_MAX,
|
|
};
|
|
|
|
/* record prefix (mandatory in each record) */
|
|
struct jr_prefix {
|
|
uint32_t id;
|
|
uint32_t total_size;
|
|
uint64_t timestamp;
|
|
};
|
|
|
|
struct jr_code_load {
|
|
struct jr_prefix p;
|
|
|
|
uint32_t pid;
|
|
uint32_t tid;
|
|
uint64_t vma;
|
|
uint64_t code_addr;
|
|
uint64_t code_size;
|
|
uint64_t code_index;
|
|
};
|
|
|
|
struct jr_code_close {
|
|
struct jr_prefix p;
|
|
};
|
|
|
|
struct jr_code_move {
|
|
struct jr_prefix p;
|
|
|
|
uint32_t pid;
|
|
uint32_t tid;
|
|
uint64_t vma;
|
|
uint64_t old_code_addr;
|
|
uint64_t new_code_addr;
|
|
uint64_t code_size;
|
|
uint64_t code_index;
|
|
};
|
|
|
|
struct debug_entry {
|
|
uint64_t addr;
|
|
int lineno; /* source line number starting at 1 */
|
|
int discrim; /* column discriminator, 0 is default */
|
|
const char name[0]; /* null terminated filename, \xff\0 if same as previous entry */
|
|
};
|
|
|
|
struct jr_code_debug_info {
|
|
struct jr_prefix p;
|
|
|
|
uint64_t code_addr;
|
|
uint64_t nr_entry;
|
|
struct debug_entry entries[0];
|
|
};
|
|
|
|
union jr_entry {
|
|
struct jr_code_debug_info info;
|
|
struct jr_code_close close;
|
|
struct jr_code_load load;
|
|
struct jr_code_move move;
|
|
struct jr_prefix prefix;
|
|
};
|
|
|
|
static inline struct debug_entry *
|
|
debug_entry_next(struct debug_entry *ent)
|
|
{
|
|
void *a = ent + 1;
|
|
size_t l = strlen(ent->name) + 1;
|
|
return a + l;
|
|
}
|
|
|
|
static inline char *
|
|
debug_entry_file(struct debug_entry *ent)
|
|
{
|
|
void *a = ent + 1;
|
|
return a;
|
|
}
|
|
|
|
#endif /* !JITDUMP_H */
|