Defined in 4 files as a macro:

• arch/powerpc/kernel/prom_init.c, line 708 (as a macro)
• include/linux/ctype.h, line 41 (as a macro)
• tools/include/linux/ctype.h, line 41 (as a macro)
• tools/include/linux/ctype.h, line 47 (as a macro)

Defined in 3 files as a function:

• arch/x86/boot/ctype.h, line 5 (as a function)
• include/linux/ctype.h, line 43 (as a function)
• tools/include/nolibc/nolibc.h, line 2444 (as a function)

Referenced in 111 files:

• arch/powerpc/kernel/prom_init.c, line 726
• arch/s390/boot/pgm_check_info.c, line 98
• arch/s390/boot/string.c, line 85
• arch/s390/kernel/debug.c, line 1362
• arch/s390/kernel/ipl.c, line 738
• arch/um/drivers/ubd_kern.c, line 255
• arch/x86/boot/ctype.h, line 12
• arch/x86/boot/printf.c, 3 times
• arch/x86/boot/string.c, 2 times
• arch/x86/kernel/amd_gart_64.c, line 820
• arch/x86/kernel/cpu/mce/core.c, line 2180
• block/genhd.c, line 95
• block/partitions/core.c, 2 times
• crypto/algboss.c, line 112
• drivers/accessibility/speakup/i18n.c, 2 times
• drivers/accessibility/speakup/kobjects.c, 2 times
• drivers/acpi/acpica/utprint.c, 3 times
• drivers/acpi/acpica/utstrsuppt.c, line 107
• drivers/atm/solos-pci.c, 5 times
• drivers/crypto/qat/qat_common/qat_uclo.c, line 205
• drivers/edac/edac_pci_sysfs.c, line 224
• drivers/edac/fsl_ddr_edac.c, 3 times
• drivers/edac/mpc85xx_edac.c, 3 times
• drivers/edac/octeon_edac-lmc.c, line 147
• drivers/firmware/efi/libstub/gop.c, 3 times
• drivers/firmware/efi/libstub/string.c, line 97
• drivers/firmware/efi/libstub/vsprintf.c, 2 times
• drivers/gpio/gpiolib-sysfs.c, line 138
• drivers/gpu/drm/drm_modes.c, line 1776
• drivers/hwmon/dell-smm-hwmon.c, 3 times
• drivers/md/md.c, 2 times
• drivers/mfd/ab8500-debugfs.c, line 1651
• drivers/mtd/mtdsuper.c, line 155
• drivers/net/bonding/bond_options.c, line 535
• drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c, line 2823
• drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c, line 1387
• drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.h, line 57
• drivers/net/team/team.c, line 419
• drivers/of/base.c, line 2006
• drivers/parisc/pdc_stable.c, 2 times
• drivers/perf/arm-ccn.c, line 456
• drivers/s390/char/sclp_cpi_sys.c, line 193
• drivers/scsi/csiostor/csio_scsi.c, line 1445
• drivers/scsi/lpfc/lpfc_attr.c, 11 times
• drivers/scsi/qla2xxx/tcm_qla2xxx.c, line 72
• drivers/scsi/scsi_transport_spi.c, line 455
• drivers/scsi/snic/snic_ctl.c, line 76
• drivers/target/sbp/sbp_target.c, line 1928
• drivers/target/target_core_fabric_lib.c, line 332
• drivers/tty/tty_io.c, line 351
• drivers/usb/gadget/epautoconf.c, line 96
• drivers/usb/gadget/legacy/raw_gadget.c, line 261
• drivers/video/fbdev/acornfb.c, line 830
• drivers/video/logo/pnmtologo.c, line 105
• fs/afs/addr_list.c, 2 times
• fs/cifs/cifs_debug.c, line 975
• fs/cifs/cifsroot.c, line 32
• fs/hugetlbfs/inode.c, 3 times
• fs/nfsd/nfsctl.c, line 806
• fs/ubifs/super.c, 2 times
• init/do_mounts.c, 2 times
• kernel/debug/kdb/kdb_main.c, 2 times
• kernel/dma/swiotlb.c, line 79
• kernel/printk/printk.c, line 2364
• kernel/reboot.c, line 560
• kernel/sys.c, line 1247
• kernel/sysctl.c, line 473
• kernel/trace/trace.c, line 3725
• kernel/trace/trace.h, line 1949
• kernel/trace/trace_events.c, 2 times
• kernel/trace/trace_events_filter.c, 2 times
• kernel/trace/trace_events_inject.c, line 74
• kernel/trace/trace_events_trigger.c, line 640
• kernel/trace/trace_kprobe.c, line 769
• kernel/trace/trace_probe.c, 3 times
• kernel/trace/trace_uprobe.c, line 572
• lib/parser.c, line 44
• lib/vsprintf.c, 8 times
• mm/mempolicy.c, line 2913
• mm/shmem.c, line 3501
• net/netfilter/ipvs/ip_vs_ftp.c, 3 times
• net/netfilter/nf_conntrack_ftp.c, 3 times
• net/netfilter/nf_conntrack_sip.c, line 82
• net/x25/af_x25.c, line 685
• scripts/asn1_compiler.c, 2 times
• scripts/kconfig/conf.c, line 535
• scripts/kconfig/symbol.c, 2 times
• scripts/unifdef.c, line 853
• security/device_cgroup.c, 4 times
• security/tomoyo/util.c, 2 times
• sound/core/init.c, line 585
• tools/bpf/bpftool/perf.c, 2 times
• tools/iio/iio_utils.c, line 57
• tools/lib/perf/cpumap.c, 2 times
• tools/lib/traceevent/event-parse.c, 3 times
• tools/lib/traceevent/parse-filter.c, line 360
• tools/perf/builtin-top.c, line 370
• tools/perf/util/env.c, line 350
• tools/perf/util/jitdump.c, line 771
• tools/perf/util/machine.c, line 1250
• tools/perf/util/probe-event.c, line 1301
• tools/perf/util/stat-display.c, 2 times
• tools/perf/util/string.c, line 30
• tools/perf/util/synthetic-events.c, 2 times
• tools/perf/util/trace-event-parse.c, line 206
• tools/power/acpi/os_specific/service_layers/oslinuxtbl.c, line 1167
• tools/power/cpupower/utils/cpufreq-set.c, 3 times
• tools/power/x86/turbostat/turbostat.c, line 5598
• tools/testing/selftests/kvm/lib/test_util.c, line 28
• tools/tracing/latency/latency-collector.c, line 1812
• tools/usb/usbip/src/usbip_detach.c, line 44