Function prototype or declaration at include/linux/spinlock_api_smp.h, line 18 References: arch/arm/kernel/time.c, line 50 arch/arm/kernel/time.c, line 58 arch/arm64/kernel/time.c, line 49 arch/arm64/kernel/time.c, line 61 arch/parisc/kernel/time.c, line 131 arch/powerpc/kernel/time.c, line 475 arch/sparc/kernel/time_64.c, line 63 arch/x86/kernel/time.c, line 34 include/linux/ftrace.h, line 704 include/linux/ftrace.h, line 707 include/linux/spinlock_api_smp.h, line 18 kernel/locking/spinlock.c, line 384 kernel/locking/spinlock.c, line 392 kernel/sched/core.c, line 5803