asm/fpu/sched.h

8 #include <asm/fpu/types.h>
10 #include <asm/trace/fpu.h>
12 extern void save_fpregs_to_fpstate(struct fpu *fpu);
13 extern void fpu__drop(struct fpu *fpu);
19  * FPU state switching for scheduling.
29  * If TIF_NEED_FPU_LOAD is cleared then the CPU's FPU registers
30  * are saved in the current thread's FPU register state.
32  * If TIF_NEED_FPU_LOAD is set then CPU's FPU registers may not
33  * hold current()'s FPU registers. It is required to load the
37  * The FPU context is only stored/restored for a user task and
44 		struct fpu *old_fpu = &old->thread.fpu;  in switch_fpu_prepare()
51 		 * to user space can avoid the FPU register restore  in switch_fpu_prepare()
62  * Delay loading of the complete FPU state until the return to userland.