Defined in 2 files as a macro:

• include/asm-i386/ptrace.h, line 14 (as a macro)
• include/asm-um/ptrace-x86_64.h, line 26 (as a macro)

Referenced in 4 files:

• Documentation/mtrr.txt, line 512
• include/asm-m68knommu/nettel.h, line 515
• include/asm-mips/ddb5xxx/ddb5477.h, line 514
• sound/oss/pas2_pcm.c, line 521