Extern or forward variable declaration at include/linux/kernel.h, line 290 References: arch/alpha/kernel/setup.c, line 49 arch/alpha/kernel/setup.c, line 538 arch/arm64/kernel/cpufeature.c, line 83 arch/arm64/kernel/setup.c, line 370 arch/arm64/mm/init.c, line 683 arch/mips/kernel/relocate.c, line 436 arch/mips/lasat/setup.c, line 139 arch/mips/sgi-ip22/ip22-reset.c, line 198 arch/mips/sgi-ip32/ip32-reset.c, line 147 arch/parisc/kernel/pdc_chassis.c, line 149 arch/powerpc/kernel/setup-common.c, line 727 arch/s390/kernel/ipl.c, line 1767 arch/sparc/kernel/sstate.c, line 108 arch/um/drivers/mconsole_kern.c, line 835 arch/um/kernel/um_arch.c, line 229 arch/x86/kernel/setup.c, line 1310 arch/x86/xen/enlighten.c, line 282 arch/xtensa/platforms/iss/setup.c, line 100 drivers/bus/brcmstb_gisb.c, line 408 drivers/char/ipmi/ipmi_msghandler.c, line 5157 drivers/char/ipmi/ipmi_msghandler.c, line 5177 drivers/char/ipmi/ipmi_watchdog.c, line 1339 drivers/char/ipmi/ipmi_watchdog.c, line 1348 drivers/char/ipmi/ipmi_watchdog.c, line 1370 drivers/firmware/google/gsmi.c, line 897 drivers/firmware/google/gsmi.c, line 923 drivers/hv/vmbus_drv.c, line 1069 drivers/hv/vmbus_drv.c, line 1789 drivers/hwtracing/coresight/coresight-cpu-debug.c, line 559 drivers/hwtracing/coresight/coresight-cpu-debug.c, line 576 drivers/leds/trigger/ledtrig-activity.c, line 255 drivers/leds/trigger/ledtrig-activity.c, line 265 drivers/leds/trigger/ledtrig-heartbeat.c, line 196 drivers/leds/trigger/ledtrig-heartbeat.c, line 206 drivers/leds/trigger/ledtrig-panic.c, line 70 drivers/misc/ibmasm/heartbeat.c, line 55 drivers/misc/ibmasm/heartbeat.c, line 60 drivers/parisc/power.c, line 232 drivers/parisc/power.c, line 242 drivers/platform/x86/pvpanic.c, line 110 drivers/platform/x86/pvpanic.c, line 119 drivers/power/reset/ltc2952-poweroff.c, line 285 drivers/power/reset/ltc2952-poweroff.c, line 299 drivers/s390/char/con3215.c, line 951 drivers/s390/char/con3270.c, line 643 drivers/s390/char/sclp.c, line 1245 drivers/s390/char/sclp_async.c, line 184 drivers/s390/char/sclp_async.c, line 201 drivers/s390/char/sclp_con.c, line 348 drivers/s390/char/sclp_vt220.c, line 890 drivers/soc/bcm/brcmstb/pm/pm-arm.c, line 794 drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c, line 137 drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c, line 143 drivers/staging/olpc_dcon/olpc_dcon.c, line 662 drivers/staging/olpc_dcon/olpc_dcon.c, line 684 drivers/video/fbdev/hyperv_fb.c, line 852 drivers/video/fbdev/hyperv_fb.c, line 874 include/linux/kernel.h, line 290 kernel/debug/debug_core.c, line 908 kernel/debug/debug_core.c, line 931 kernel/hung_task.c, line 261 kernel/panic.c, line 48 kernel/panic.c, line 50 kernel/panic.c, line 218 kernel/rcu/update.c, line 548 kernel/trace/trace.c, line 8529