Extern or forward variable declaration at include/linux/kobject.h, line 229 References: arch/powerpc/kernel/fadump.c, line 1554 arch/powerpc/kernel/fadump.c, line 1586 arch/powerpc/kernel/fadump.c, line 1593 arch/powerpc/kernel/fadump.c, line 1598 arch/powerpc/kernel/fadump.c, line 1603 arch/powerpc/platforms/pseries/dlpar.c, line 594 arch/powerpc/platforms/pseries/mobility.c, line 681 arch/x86/kernel/ksysfs.c, line 333 crypto/pcrypt.c, line 340 drivers/base/swnode.c, line 1162 drivers/iommu/iommu.c, line 2676 fs/debugfs/inode.c, line 839 fs/debugfs/inode.c, line 845 fs/dlm/lockspace.c, line 238 fs/fscache/main.c, line 148 fs/tracefs/inode.c, line 542 include/linux/kobject.h, line 229 kernel/cgroup/cgroup.c, line 6568 kernel/irq/irqdesc.c, line 318 kernel/ksysfs.c, line 208 kernel/ksysfs.c, line 209 kernel/ksysfs.c, line 243 kernel/ksysfs.c, line 244 kernel/ksysfs.c, line 248 kernel/ksysfs.c, line 254 kernel/ksysfs.c, line 262 kernel/ksysfs.c, line 264 kernel/livepatch/core.c, line 1269 kernel/reboot.c, line 800 mm/slub.c, line 5781 samples/kobject/kobject-example.c, line 124 samples/kobject/kset-example.c, line 247 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c, line 60 tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c, line 65