Defined in 2 files as a macro:

• include/linux/ctype.h, line 29 (as a macro)
• tools/include/linux/ctype.h, line 29 (as a macro)

Referenced in 7 files:

• arch/s390/boot/ipl_parm.c, line 118
• drivers/scsi/qla2xxx/tcm_qla2xxx.c, line 74
• include/linux/ctype.h, line 58
• net/smc/smc_pnet.c, line 297
• scripts/asn1_compiler.c, line 434
• tools/include/linux/ctype.h, line 59
• tools/perf/util/string.c, line 59