/*
* cpu_lwp_free is called from exit() to let machine-dependent
* code free machine-dependent resources. Note that this routine
* must not block.
*/
void
cpu_lwp_free(struct lwp *l, int proc)
{
/* If we were using the FPU, forget about it. */
fpusave_lwp(l, false);
#ifdef MTRR
if (proc && l->l_proc->p_md.md_flags & MDP_USEDMTRR)
mtrr_clean(l->l_proc);
#endif
}
/*
* cpu_lwp_free is called from exit() to let machine-dependent
* code free machine-dependent resources. Note that this routine
* must not block.
*/
void
cpu_lwp_free(struct lwp *l, int proc)
{
struct pcb *pcb = lwp_getpcb(l);
/* If we were using the FPU, forget about it. */
if (pcb->pcb_fpcpu != NULL) {
fpusave_lwp(l, false);
}
#ifdef MTRR
if (proc && l->l_proc->p_md.md_flags & MDP_USEDMTRR)
mtrr_clean(l->l_proc);
#endif
}
/*
* cpu_exit is called as the last action during exit.
*
* We clean up a little and then call sched_exit() with the old proc as an
* argument.
*/
void
cpu_exit(struct proc *p)
{
/* If we were using the FPU, forget about it. */
if (p->p_addr->u_pcb.pcb_fpcpu != NULL)
fpusave_proc(p, 0);
if (p->p_md.md_flags & MDP_USEDMTRR)
mtrr_clean(p);
pmap_deactivate(p);
tss_free(p->p_md.md_tss_sel);
sched_exit(p);
}
/*
* cpu_exit is called as the last action during exit.
*
* We clean up a little and then call switch_exit() with the old proc as an
* argument. switch_exit() first switches to proc0's context, and finally
* jumps into switch() to wait for another process to wake up.
*/
void
cpu_exit(struct proc *p)
{
/* If we were using the FPU, forget about it. */
if (p->p_addr->u_pcb.pcb_fpcpu != NULL)
fpusave_proc(p, 0);
if (p->p_md.md_flags & MDP_USEDMTRR)
mtrr_clean(p);
/*
* No need to do user LDT cleanup here; it's handled in
* pmap_destroy().
*/
uvmexp.swtch++;
switch_exit(p, exit2);
}
