Differential D27288 Diff 79911 head/sys/kern/kern_thread.c

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head/sys/kern/kern_thread.c

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	static int			static int
	thread_ctor(void mem, int size, void arg, int flags)			thread_ctor(void mem, int size, void arg, int flags)
	{			{
	struct thread *td;			struct thread *td;

	td = (struct thread *)mem;			td = (struct thread *)mem;
	td->td_state = TDS_INACTIVE;			td->td_state = TDS_INACTIVE;
	td->td_lastcpu = td->td_oncpu = NOCPU;			td->td_lastcpu = td->td_oncpu = NOCPU;
				td->td_allocdomain = vm_phys_domain(vtophys(td));

	/*			/*
	* Note that td_critnest begins life as 1 because the thread is not			* Note that td_critnest begins life as 1 because the thread is not
	* running and is thereby implicitly waiting to be on the receiving			* running and is thereby implicitly waiting to be on the receiving
	* end of a context switch.			* end of a context switch.
	*/			*/
	td->td_critnest = 1;			td->td_critnest = 1;
	td->td_lend_user_pri = PRI_MAX;			td->td_lend_user_pri = PRI_MAX;
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	* Place an unused thread on the zombie list.			* Place an unused thread on the zombie list.
	*/			*/
	void			void
	thread_zombie(struct thread *td)			thread_zombie(struct thread *td)
	{			{
	struct thread_domain_data *tdd;			struct thread_domain_data *tdd;
	struct thread *ztd;			struct thread *ztd;

	tdd = &thread_domain_data[vm_phys_domain(vtophys(td))];			tdd = &thread_domain_data[td->td_allocdomain];
	ztd = atomic_load_ptr(&tdd->tdd_zombies);			ztd = atomic_load_ptr(&tdd->tdd_zombies);
	for (;;) {			for (;;) {
	td->td_zombie = ztd;			td->td_zombie = ztd;
	if (atomic_fcmpset_rel_ptr((uintptr_t *)&tdd->tdd_zombies,			if (atomic_fcmpset_rel_ptr((uintptr_t *)&tdd->tdd_zombies,
	(uintptr_t *)&ztd, (uintptr_t)td))			(uintptr_t *)&ztd, (uintptr_t)td))
	break;			break;
	continue;			continue;
	}			}
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