Defined in 2 files as a macro:

• arch/um/include/shared/os.h, line 39 (as a macro)
• arch/um/include/shared/os.h, line 41 (as a macro)

Referenced in 3 files:

• arch/um/drivers/port_user.c, line 173
• arch/um/drivers/xterm.c, line 94
• arch/um/os-Linux/main.c, line 70