BLK_TC_ISSUE       79 include/uapi/linux/blktrace_api.h #define BLK_TA_ISSUE		(__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
BLK_TC_ISSUE     1721 kernel/trace/blktrace.c 	{ BLK_TC_ISSUE,		"issue"		},