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 <johannes.thumsh...@wdc.com>
---
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
