Add definitions for a new BLKTRACESETUP2 ioctl(2). This new ioctl(2) will request a new, updated structure layout from the kernel which enhances the storage size of the 'action' field in order to store additional tracepoints.
Signed-off-by: Johannes Thumshirn <[email protected]> --- blktrace_api.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/blktrace_api.h b/blktrace_api.h index 172b4c2..ecffe6e 100644 --- a/blktrace_api.h +++ b/blktrace_api.h @@ -139,9 +139,25 @@ struct blk_user_trace_setup { __u32 pid; }; +/* + * User setup structure passed with BLKTRACESETUP2 + */ +struct blk_user_trace_setup2 { + char name[64]; /* output */ + __u64 act_mask; /* input */ + __u32 buf_size; /* input */ + __u32 buf_nr; /* input */ + __u64 start_lba; + __u64 end_lba; + __u32 pid; + __u32 flags; /* currently unused */ + __u64 reserved[11]; +}; + #define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup) #define BLKTRACESTART _IO(0x12,116) #define BLKTRACESTOP _IO(0x12,117) #define BLKTRACETEARDOWN _IO(0x12,118) +#define BLKTRACESETUP2 _IOWR(0x12, 142, struct blk_user_trace_setup2) #endif -- 2.51.0
