Function prototype or declaration at include/linux/perf_event.h, line 729 References: arch/powerpc/kernel/irq.c, line 143 arch/powerpc/kernel/time.c, line 581 arch/sparc/kernel/pcr.c, line 46 arch/x86/kernel/cpu/perf_event.c, line 1786 include/linux/perf_event.h, line 729 include/linux/perf_event.h, line 841 kernel/perf_event.c, line 2605 kernel/timer.c, line 1214