Defined in 3 files as a macro:

• arch/powerpc/kernel/prom_init.c, line 699 (as a macro)
• include/linux/ctype.h, line 31 (as a macro)
• tools/include/linux/ctype.h, line 32 (as a macro)

Referenced in 8 files:

• arch/powerpc/kernel/prom_init.c, line 700
• arch/s390/boot/ipl_parm.c, line 87
• drivers/scsi/qla2xxx/tcm_qla2xxx.c, line 74
• include/linux/ctype.h, line 51
• net/smc/smc_pnet.c, line 282
• scripts/asn1_compiler.c, line 434
• tools/include/linux/ctype.h, line 52
• tools/perf/util/string.c, line 59