Function proc0_init

freebsd/kern/init_main.c:442–625

* The two following SYSINIT's are proc0 specific glue code. I am not * convinced that they can not be safely combined, but their order of * operation has been maintained as the same as the original init_main.c * for right now. */ ARGSUSED*/

 */
/* ARGSUSED*/
static void
proc0_init(void *dummy __unused)
{
	struct proc *p;
	struct thread *td;
	struct ucred *newcred;
	struct uidinfo tmpuinfo;
	struct loginclass tmplc = {
		.lc_name = "",
	};
	vm_paddr_t pageablemem;
	int i;

	GIANT_REQUIRED;
	p = &proc0;
	td = &thread0;

	/*
	 * Initialize magic number and osrel.
	 */
	p->p_magic = P_MAGIC;
	p->p_osrel = osreldate;

	/*
	 * Initialize thread and process structures.
	 */
	procinit();	/* set up proc zone */
	threadinit();	/* set up UMA zones */

	/*
	 * Initialise scheduler resources.
	 * Add scheduler specific parts to proc, thread as needed.
	 */
	schedinit();	/* scheduler gets its house in order */

	/*
	 * Create process 0 (the swapper).
	 */
	LIST_INSERT_HEAD(&allproc, p, p_list);
	LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
	mtx_init(&pgrp0.pg_mtx, "process group", NULL, MTX_DEF | MTX_DUPOK);
	p->p_pgrp = &pgrp0;
	LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash);
	LIST_INIT(&pgrp0.pg_members);
	LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist);

	pgrp0.pg_session = &session0;
	mtx_init(&session0.s_mtx, "session", NULL, MTX_DEF);
	refcount_init(&session0.s_count, 1);
	session0.s_leader = p;

	p->p_sysent = &null_sysvec;
	p->p_flag = P_SYSTEM | P_INMEM | P_KPROC;
	p->p_flag2 = 0;
	p->p_state = PRS_NORMAL;
	p->p_klist = knlist_alloc(&p->p_mtx);
	STAILQ_INIT(&p->p_ktr);
	p->p_nice = NZERO;