[PATCH 02/16] blktrace: add definitions for blk_user_trace_setup2
From: Johannes Thumshirn <hidden>
Date: 2025-09-09 11:06:33
Also in:
linux-block, lkml
Subsystem:
block layer, filesystems (vfs and infrastructure), the rest · Maintainers:
Jens Axboe, Alexander Viro, Christian Brauner, Linus Torvalds
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 <redacted> --- 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 */
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2.51.0