Add block device tracing facility

The implementation is in libblockdriver, and works transparently for all block drivers. The new btrace(8) tool can be used to control block tracing; see ``man btrace'' for details.
2011-11-25 13:47:21 +01:00
parent a9f89a7290
commit fd4c2b74f3
20 changed files with 682 additions and 30 deletions
@@ -3,7 +3,7 @@

 LIB=	blockdriver

-SRCS=	driver.c drvlib.c driver_st.c driver_mt.c mq.c event.c
+SRCS=	driver.c drvlib.c driver_st.c driver_mt.c mq.c event.c trace.c

 .if ${USE_STATECTL} != "no"
 CPPFLAGS+= -DUSE_STATECTL