Btrfs: add work_struct information for workqueue tracepoint
authorLiu Bo <bo.li.liu@oracle.com>
Tue, 12 Aug 2014 08:33:17 +0000 (16:33 +0800)
committerChris Mason <clm@fb.com>
Wed, 17 Sep 2014 20:37:51 +0000 (13:37 -0700)
commitb38a62586fed4ce058dc8d40deaa1b85cafc7fb3
treea836ac1d5d51051cad3ce345891125af1593d858
parentd3982100baeb9bed8cf931545fb0522268f526e5
Btrfs: add work_struct information for workqueue tracepoint

Kernel workqueue's tracepoints print the address of work_struct, while btrfs
workqueue's tracepoints print the address of btrfs_work.

We need a connection between this two, for example when debuging, we usually
grep an address in the trace output.  So it'd be better to also print
work_struct in btrfs workqueue's tracepoint.

Please note that we can only add this into those tracepoints whose work is still
available in memory because we need to reference the work.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
include/trace/events/btrfs.h