Reland "Linux perf tool support update + refactoring." (r22146, attempt #5)

src/third_party/kernel/tools/perf/util/jitdump.h

Index: src/third_party/kernel/tools/perf/util/jitdump.h
diff --git a/src/third_party/kernel/tools/perf/util/jitdump.h b/src/third_party/kernel/tools/perf/util/jitdump.h
new file mode 100644
index 0000000000000000000000000000000000000000..85d51b79af533b91cdff1693b23d5f2d810788dd
--- /dev/null
+++ b/src/third_party/kernel/tools/perf/util/jitdump.h
@@ -0,0 +1,83 @@
+#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
+
+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 */
+};
+
+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 jr_code_debug_info {
+  struct jr_prefix p;
+
+  uint64_t code_addr;
+  uint64_t nr_entry;
+};
+
+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;
+};
+
+#endif /* !JITDUMP_H */