avx512_timestamp 427 arch/x86/include/asm/fpu/internal.h fpu->avx512_timestamp = jiffies; avx512_timestamp 301 arch/x86/include/asm/fpu/types.h unsigned long avx512_timestamp; avx512_timestamp 1254 arch/x86/kernel/fpu/xstate.c unsigned long timestamp = READ_ONCE(task->thread.fpu.avx512_timestamp);