compat_blk_user_trace_setup  119 include/linux/blktrace_api.h #define BLKTRACESETUP32 _IOWR(0x12, 115, struct compat_blk_user_trace_setup)
compat_blk_user_trace_setup  603 kernel/trace/blktrace.c 	struct compat_blk_user_trace_setup cbuts;