Collect all the (now equivalent) pmap_new_proc/pmap_dispose_proc/

pmap_swapin_proc/pmap_swapout_proc functions from the MD pmap code
and use a single equivalent MI version.  There are other cleanups
needed still.

While here, use the UMA zone hooks to keep a cache of preinitialized
proc structures handy, just like the thread system does.  This eliminates
one dependency on 'struct proc' being persistent even after being freed.
There are some comments about things that can be factored out into
ctor/dtor functions if it is worth it.  For now they are mostly just
doing statistics to get a feel of how it is working.

1 files changed, 0 insertions, 73 deletions

diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c
index 691c6f9..817f7f1 100644
--- a/sys/powerpc/aim/mmu_oea.c
+++ b/sys/powerpc/aim/mmu_oea.c
@@ -1170,61 +1170,6 @@ pmap_mincore(pmap_t pmap, vm_offset_t addr)
 	return (0);
 }
 
-/*              
- * Create the uarea for a new process.
- * This routine directly affects the fork perf for a process.
- */
-void
-pmap_new_proc(struct proc *p)
-{
-	vm_object_t	upobj;
-	vm_offset_t	up;
-	vm_page_t	m;
-	u_int		i;
-
-	/*
-	 * Allocate the object for the upages.
-	 */
-	upobj = p->p_upages_obj;
-	if (upobj == NULL) {
-		upobj = vm_object_allocate(OBJT_DEFAULT, UAREA_PAGES);
-		p->p_upages_obj = upobj;
-	}
-
-	/*
-	 * Get a kernel virtual address for the uarea for this process.
-	 */
-	up = (vm_offset_t)p->p_uarea;
-	if (up == 0) {
-		up = kmem_alloc_nofault(kernel_map, UAREA_PAGES * PAGE_SIZE);
-		if (up == 0)
-			panic("pmap_new_proc: upage allocation failed");
-		p->p_uarea = (struct user *)up;
-	}
-
-	for (i = 0; i < UAREA_PAGES; i++) {
-		/*
-		 * Get a uarea page.
-		 */
-		m = vm_page_grab(upobj, i, VM_ALLOC_NORMAL | VM_ALLOC_RETRY);
-
-		/*
-		 * Wire the page.
-		 */
-		m->wire_count++;
-
-		/*
-		 * Enter the page into the kernel address space.
-		 */
-		pmap_kenter(up + i * PAGE_SIZE, VM_PAGE_TO_PHYS(m));
-
-		vm_page_wakeup(m);
-		vm_page_flag_clear(m, PG_ZERO);
-		vm_page_flag_set(m, PG_MAPPED | PG_WRITEABLE);
-		m->valid = VM_PAGE_BITS_ALL;
-	}
-}
-
 void
 pmap_object_init_pt(pmap_t pm, vm_offset_t addr, vm_object_t object,
 		    vm_pindex_t pindex, vm_size_t size, int limit)
@@ -1515,18 +1460,6 @@ pmap_remove_pages(pmap_t pm, vm_offset_t sva, vm_offset_t eva)
 	pmap_remove(pm, sva, eva);
 }
 
-void
-pmap_swapin_proc(struct proc *p)
-{
-	TODO;
-}
-
-void
-pmap_swapout_proc(struct proc *p)
-{
-	TODO;
-}
-
 /*
  * Create the kernel stack and pcb for a new thread.
  * This routine directly affects the fork perf for a process and
@@ -1581,12 +1514,6 @@ pmap_new_thread(struct thread *td)
 }
 
 void
-pmap_dispose_proc(struct proc *p)
-{
-	TODO;
-}
-
-void
 pmap_dispose_thread(struct thread *td)
 {
 	TODO;