The specification says it's in version 2. Previously it changed to 1
due to the mismatch with the code. But I think it's better to use the
version 2 to indicate it supports the unwind info.
The version check code in jitdump.c only checks if it's greater than the
current version so old data with version number 1 should work too.
Cc: Stephane Eranian <[email protected]>
Cc: Steve MacLean <[email protected]>
Cc: Pablo Galindo <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
---
tools/perf/Documentation/jitdump-specification.txt | 2 +-
tools/perf/util/jitdump.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/jitdump-specification.txt b/tools/perf/Documentation/jitdump-specification.txt
index 5c3fbbbebf14..863b35d4ad4a 100644
--- a/tools/perf/Documentation/jitdump-specification.txt
+++ b/tools/perf/Documentation/jitdump-specification.txt
@@ -37,7 +37,7 @@ III/ Jitdump file header format
* uint32_t magic : a magic number tagging the file type. The value is 4-byte long and represents the string "JiTD" in ASCII form. It written is as 0x4A695444. The reader will detect an endian mismatch when it reads 0x4454694a.
-* uint32_t version : a 4-byte value representing the format version. It is currently set to 1
+* uint32_t version : a 4-byte value representing the format version. It is currently set to 2
* uint32_t total_size: size in bytes of file header
* uint32_t elf_mach : ELF architecture encoding (ELF e_machine value as specified in /usr/include/elf.h)
* uint32_t pad1 : padding. Reserved for future use
diff --git a/tools/perf/util/jitdump.h b/tools/perf/util/jitdump.h
index ab2842def83d..4e3f6702d919 100644
--- a/tools/perf/util/jitdump.h
+++ b/tools/perf/util/jitdump.h
@@ -22,7 +22,7 @@
#define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7)
#define ALIGN_8(x) (((x) + 7) & (~7))
-#define JITHEADER_VERSION 1
+#define JITHEADER_VERSION 2
enum jitdump_flags_bits {
JITDUMP_FLAGS_ARCH_TIMESTAMP_BIT,
--
2.43.0.472.g3155946c3a-goog