perfctr_second_write 1244 arch/x86/events/core.c if (x86_pmu.perfctr_second_write) { perfctr_second_write 1334 arch/x86/events/intel/p4.c .perfctr_second_write = 1, perfctr_second_write 615 arch/x86/events/perf_event.h int perfctr_second_write;