Extern or forward variable declaration at include/linux/kernel.h, line 503 References: arch/ia64/kernel/mca.c, line 193 arch/ia64/kernel/mca.c, line 204 arch/ia64/kernel/mca.c, line 221 arch/s390/kernel/setup.c, line 268 arch/s390/kernel/setup.c, line 279 arch/s390/kernel/setup.c, line 290 arch/s390/kernel/smp.c, line 469 drivers/char/ipmi/ipmi_msghandler.c, line 907 drivers/gpu/drm/drm_crtc_helper.c, line 104 drivers/gpu/drm/drm_crtc_helper.c, line 144 drivers/gpu/drm/drm_fb_helper.c, line 342 drivers/gpu/drm/drm_fb_helper.c, line 1125 drivers/gpu/drm/drm_fb_helper.c, line 1374 drivers/gpu/drm/drm_fb_helper.c, line 1458 drivers/gpu/drm/drm_modeset_lock.c, line 178 drivers/mtd/nand/onenand/omap2.c, line 378 drivers/mtd/nand/onenand/omap2.c, line 425 drivers/mtd/nand/raw/nand_legacy.c, line 197 drivers/mtd/nand/raw/nand_legacy.c, line 547 drivers/net/netconsole.c, line 825 drivers/net/netconsole.c, line 842 drivers/parisc/led.c, line 467 drivers/tty/serial/8250/8250_port.c, line 3226 drivers/tty/serial/amba-pl011.c, line 2222 drivers/tty/serial/ar933x_uart.c, line 545 drivers/tty/serial/bcm63xx_uart.c, line 712 drivers/tty/serial/cpm_uart/cpm_uart_core.c, line 1270 drivers/tty/serial/digicolor-usart.c, line 400 drivers/tty/serial/fsl_lpuart.c, line 2034 drivers/tty/serial/fsl_lpuart.c, line 2065 drivers/tty/serial/imx.c, line 1919 drivers/tty/serial/lpc32xx_hs.c, line 141 drivers/tty/serial/meson_uart.c, line 477 drivers/tty/serial/mvebu-uart.c, line 665 drivers/tty/serial/omap-serial.c, line 1313 drivers/tty/serial/owl-uart.c, line 505 drivers/tty/serial/pch_uart.c, line 1645 drivers/tty/serial/pxa.c, line 652 drivers/tty/serial/qcom_geni_serial.c, line 436 drivers/tty/serial/rda-uart.c, line 600 drivers/tty/serial/sh-sci.c, line 3020 drivers/tty/serial/sifive.c, line 783 drivers/tty/serial/sprd_serial.c, line 962 drivers/tty/serial/st-asc.c, line 888 drivers/tty/serial/stm32-usart.c, line 1266 drivers/tty/serial/sunhv.c, line 445 drivers/tty/serial/sunhv.c, line 500 drivers/tty/serial/sunsab.c, line 868 drivers/tty/serial/sunsu.c, line 1312 drivers/tty/serial/sunzilog.c, line 1209 drivers/tty/serial/uartlite.c, line 488 drivers/tty/serial/xilinx_uartps.c, line 1203 drivers/tty/vt/vt.c, line 4253 drivers/video/fbdev/aty/radeon_base.c, line 286 fs/pstore/ftrace.c, line 39 include/linux/debug_locks.h, line 29 include/linux/kernel.h, line 503 kernel/panic.c, line 218 kernel/printk/printk.c, line 78 kernel/printk/printk.c, line 79 kernel/printk/printk.c, line 2523 kernel/sched/core.c, line 3677 kernel/sched/core.c, line 6578 kernel/smp.c, line 292 kernel/smp.c, line 425