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Use direct mapped KVA for the sf_buf allocator, as made possible

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by the previous commit. While here, fix a typo, reformat comments
and fix a long line.

Tested with: ftpd
This commit is contained in:
Marcel Moolenaar 2003-09-01 00:12:27 +00:00
parent 461722f0f2
commit 47f756866a
1 changed files with 8 additions and 15 deletions
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23
sys/ia64/ia64/vm_machdep.c
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@ -329,19 +329,15 @@ static void
sf_buf_init(void *arg)
{
struct sf_buf *sf_bufs;
vm_offset_t sf_base;
int i;
mtx_init(&sf_freelist.sf_lock, "sf_bufs list lock", NULL, MTX_DEF);
mtx_lock(&sf_freelist.sf_lock);
SLIST_INIT(&sf_freelist.sf_head);
sf_base = kmem_alloc_nofault(kernel_map, nsfbufs * PAGE_SIZE);
sf_bufs = malloc(nsfbufs * sizeof(struct sf_buf), M_TEMP,
M_NOWAIT | M_ZERO);
for (i = 0; i < nsfbufs; i++) {
sf_bufs[i].kva = sf_base + i * PAGE_SIZE;
SLIST_INSERT_HEAD(&sf_freelist.sf_head, &sf_bufs[i], free_list);
}
for (i = 0; i < nsfbufs; i++)
SLIST_INSERT_HEAD(&sf_freelist.sf_head, sf_bufs+i, free_list);
sf_buf_alloc_want = 0;
mtx_unlock(&sf_freelist.sf_lock);
}
@ -362,23 +358,21 @@ sf_buf_alloc(struct vm_page *m)
"sfbufa", 0);
sf_buf_alloc_want--;
/*
* If we got a signal, don't risk going back to sleep.
*/
/* If we got a signal, don't risk going back to sleep. */
if (error)
break;
}
if (sf != NULL) {
SLIST_REMOVE_HEAD(&sf_freelist.sf_head, free_list);
sf->m = m;
pmap_qenter(sf->kva, &sf->m, 1);
sf->kva = IA64_PHYS_TO_RR7(m->phys_addr);
}
mtx_unlock(&sf_freelist.sf_lock);
return (sf);
}
/*
* Detatch mapped page and release resources back to the system.
* Detach mapped page and release resources back to the system.
*/
void
sf_buf_free(void *addr, void *args)
@ -387,14 +381,13 @@ sf_buf_free(void *addr, void *args)
struct vm_page *m;
sf = args;
pmap_qremove((vm_offset_t)addr, 1);
m = sf->m;
vm_page_lock_queues();
vm_page_unwire(m, 0);
/*
* Check for the object going away on us. This can
* happen since we don't hold a reference to it.
* If so, we're responsible for freeing the page.
* Check for the object going away on us. This can happen since we
* don't hold a reference to it. If so, we're responsible for freeing
* the page.
*/
if (m->wire_count == 0 && m->object == NULL)
vm_page_free(m);