[PATCH 04/16] blktrace: add definitions for struct blk_io_trace2
From: Johannes Thumshirn <hidden>
Date: 2025-09-09 11:06:39
Also in:
linux-trace-kernel, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Add definitions for the extended version of the blktrace protocol using a wider action type to be able to record new actions in the kernel. Signed-off-by: Johannes Thumshirn <redacted> --- include/uapi/linux/blktrace_api.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h
index ba61374f90d8..01779f84d09f 100644
--- a/include/uapi/linux/blktrace_api.h
+++ b/include/uapi/linux/blktrace_api.h@@ -94,6 +94,7 @@ enum blktrace_notify { #define BLK_IO_TRACE_MAGIC 0x65617400 #define BLK_IO_TRACE_VERSION 0x07 +#define BLK_IO_TRACE2_VERSION 0x08 /* * The trace itself
@@ -113,6 +114,20 @@ struct blk_io_trace { /* cgroup id will be stored here if exists */ }; +struct blk_io_trace2 { + __u32 magic; /* MAGIC << 8 | BLK_IO_TRACE2_VERSION */ + __u32 sequence; /* event number */ + __u64 time; /* in nanoseconds */ + __u64 sector; /* disk offset */ + __u32 bytes; /* transfer length */ + __u32 pid; /* who did it */ + __u64 action; /* what happened */ + __u32 device; /* device number */ + __u32 cpu; /* on what cpu did it happen */ + __u16 error; /* completion error */ + __u16 pdu_len; /* length of data after this trace */ + /* cgroup id will be stored here if exists */ +}; /* * The remap event */
--
2.51.0