switch_to.h File Reference

#include <asm/barrier.h>

Go to the source code of this file.

Macros
#define	switch_fpu(prev, next)
#define	switch_to(prev, next, last)

Functions
asmlinkage void	fpu_save (struct fpu_state_struct *)
asmlinkage struct task_struct *	__switch_to (struct thread_struct *prev, struct thread_struct *next, struct task_struct *prev_task)

Macro Definition Documentation

#define switch_fpu	(		prev,
			next
	)

Value:

do {                                \
        if ((prev)->thread.fpu_flags & THREAD_HAS_FPU) {    \
            (prev)->thread.fpu_flags &= ~THREAD_HAS_FPU;    \
            (prev)->thread.uregs->epsw &= ~EPSW_FE;     \
            fpu_save(&(prev)->thread.fpu_state);        \
        }                           \
    } while (0)

Definition at line 22 of file switch_to.h.

#define switch_to	(		prev,
			next,
			last
	)

Value:

do {                                    \
    switch_fpu(prev, next);                     \
    current->thread.wchan = (u_long) __builtin_return_address(0);   \
    (last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \
    mb();                               \
    current->thread.wchan = 0;                  \
} while (0)

Definition at line 40 of file switch_to.h.

Function Documentation

asmlinkage struct task_struct* __switch_to ( struct thread_struct *  prev, struct thread_struct *  next, struct task_struct *  prev_task  )

read

asmlinkage void fpu_save

(

struct fpu_state_struct *

)