Add definitions for a version 2 of the blk_user_trace_setup ioctl. This
new will enable a different struct layout of the binary data passed to
user-space when using a new version of the blktrace utility requesting the
new struct layout.
Signed-off-by: Johannes Thumshirn <johannes.thumsh...@wdc.com>
---
include/uapi/linux/blktrace_api.h | 14 ++++++++++++++
include/uapi/linux/fs.h | 1 +
2 files changed, 15 insertions(+)
diff --git a/include/uapi/linux/blktrace_api.h
b/include/uapi/linux/blktrace_api.h
index 1bfb635e309b..ba61374f90d8 100644
--- a/include/uapi/linux/blktrace_api.h
+++ b/include/uapi/linux/blktrace_api.h
@@ -143,4 +143,18 @@ struct blk_user_trace_setup {
__u32 pid;
};
+/*
+ * User setup structure passed with BLKTRACESETUP2
+ */
+struct blk_user_trace_setup2 {
+ char name[32]; /* output */
+ __u64 act_mask; /* input */
+ __u32 buf_size; /* input */
+ __u32 buf_nr; /* input */
+ __u64 start_lba;
+ __u64 end_lba;
+ __u32 pid;
+ __u32 reserved; /* for futute use */
+};
+
#endif /* _UAPIBLKTRACE_H */
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 0bd678a4a10e..a85d0b52a3f6 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -300,6 +300,7 @@ struct file_attr {
#define BLKGETDISKSEQ _IOR(0x12,128,__u64)
/* 130-136 are used by zoned block device ioctls (uapi/linux/blkzoned.h) */
/* 137-141 are used by blk-crypto ioctls (uapi/linux/blk-crypto.h) */
+#define BLKTRACESETUP2 _IOWR(0x12, 142, struct blk_user_trace_setup2)
#define BMAP_IOCTL 1 /* obsolete - kept for compatibility */
#define FIBMAP _IO(0x00,1) /* bmap access */
--
2.51.0
