Defined in 3 files as a config:

• drivers/acpi/numa.c, line 3113 (as a config)
• include/asm-mips64/siginfo.h, line 3117 (as a config)
• include/asm-mips64/signal.h, line 3114 (as a config)

Referenced in 3 files:

• Documentation/scsi.txt, line 78
• arch/arm/boot/compressed/ofw-shark.c, line 175
• drivers/char/n_tty.c, line 432