taglinefilesource code
PF_USEDFPU252arch/i386/kernel/traps.ccurrent->flags&=~PF_USEDFPU;
PF_USEDFPU314arch/i386/kernel/traps.ccurrent->flags|=PF_USEDFPU;    /* So we fnsave on switch_to() */
PF_USEDFPU70include/asm-i386/system.hif(current->flags&PF_USEDFPU) \
PF_USEDFPU74include/asm-i386/system.hcurrent->flags&=~PF_USEDFPU;   \