Extern or forward variable declaration at include/linux/profile.h, line 87 References: arch/alpha/kernel/smp.c, line 521 arch/arm/kernel/smp.c, line 625 arch/arm/kernel/smp.c, line 686 arch/arm/kernel/smp.c, line 688 arch/arm64/kernel/smp.c, line 868 arch/arm64/kernel/time.c, line 35 arch/parisc/kernel/time.c, line 121 arch/powerpc/kernel/irq.c, line 109 arch/powerpc/kernel/irq.c, line 499 arch/powerpc/kernel/irq.c, line 712 arch/powerpc/kernel/irq.c, line 734 arch/powerpc/kernel/irq.c, line 759 arch/powerpc/kernel/irq.c, line 761 arch/powerpc/kernel/smp.c, line 413 arch/powerpc/kernel/smp.c, line 449 arch/powerpc/kernel/smp.c, line 451 arch/powerpc/kernel/smp.c, line 500 arch/powerpc/kernel/smp.c, line 565 arch/powerpc/kernel/smp.c, line 570 arch/powerpc/kernel/smp.c, line 587 arch/powerpc/kernel/smp.c, line 599 arch/powerpc/kernel/smp.c, line 624 arch/powerpc/kernel/time.c, line 481 arch/powerpc/kernel/time.c, line 557 arch/riscv/kernel/smp.c, line 141 arch/riscv/kernel/smp.c, line 143 arch/s390/kernel/irq.c, line 100 arch/s390/kernel/irq.c, line 116 arch/s390/kernel/irq.c, line 122 arch/s390/kernel/irq.c, line 126 arch/s390/kernel/irq.c, line 135 arch/s390/kernel/irq.c, line 138 arch/s390/kernel/irq.c, line 166 arch/s390/kernel/irq.c, line 169 arch/s390/kernel/irq.c, line 333 arch/sparc/kernel/smp_64.c, line 871 arch/sparc/kernel/smp_64.c, line 879 arch/sparc/kernel/smp_64.c, line 1171 arch/sparc/kernel/smp_64.c, line 1488 kernel/profile.c, line 405 kernel/sched/cpuacct.c, line 343 kernel/time/tick-sched.c, line 203 kernel/time/tick-sched.c, line 1314 kernel/time/tick-sched.c, line 1411