Defined in 2 files as a macro:

• arch/um/kernel/sys_call_table.c, line 1285 (as a macro)
• include/asm-ppc/reg.h, line 429 (as a macro)

Referenced in 2 files:

• arch/ia64/hp/sim/boot/ssc.h, line 293
• arch/x86_64/kernel/irq.c, line 293