Defined in 4 files as a macro:

• include/xen/interface/io/protocols.h, line 10 (as a macro)
• include/xen/interface/io/protocols.h, line 12 (as a macro)
• include/xen/interface/io/protocols.h, line 14 (as a macro)
• include/xen/interface/io/protocols.h, line 16 (as a macro)

Referenced in 3 files:

• drivers/block/xen-blkback/xenbus.c, line 1030
• drivers/block/xen-blkfront.c, line 1830
• drivers/video/fbdev/xen-fbfront.c, line 597