svn commit: r195840 - in head: sys/amd64/amd64 sys/arm/arm
sys/conf sys/fs/procfs sys/i386/i386 sys/i386/xen sys/ia64/ia64 sys/kern
sys/mips/mips sys/powerpc/booke sys/sparc64/sparc64 sys/sys sys/v...
Nathan Whitehorn
nwhitehorn at freebsd.org
Fri Jul 24 15:33:17 UTC 2009
This breaks at least the PowerPC build. Here's the error:
/usr/src/sys/vm/sg_pager.c:196: warning: format '%lx' expects type 'long
unsigned int', but argument 2 has type 'vm_paddr_t'
-Nathan
John Baldwin wrote:
> Author: jhb
> Date: Fri Jul 24 13:50:29 2009
> New Revision: 195840
> URL: http://svn.freebsd.org/changeset/base/195840
>
> Log:
> Add a new type of VM object: OBJT_SG. An OBJT_SG object is very similar to
> a device pager (OBJT_DEVICE) object in that it uses fictitious pages to
> provide aliases to other memory addresses. The primary difference is that
> it uses an sglist(9) to determine the physical addresses for a given offset
> into the object instead of invoking the d_mmap() method in a device driver.
>
> Reviewed by: alc
> Approved by: re (kensmith)
> MFC after: 2 weeks
>
> Added:
> head/sys/vm/sg_pager.c (contents, props changed)
> Modified:
> head/sys/amd64/amd64/pmap.c
> head/sys/arm/arm/pmap.c
> head/sys/conf/files
> head/sys/fs/procfs/procfs_map.c
> head/sys/i386/i386/pmap.c
> head/sys/i386/xen/pmap.c
> head/sys/ia64/ia64/pmap.c
> head/sys/kern/kern_proc.c
> head/sys/mips/mips/pmap.c
> head/sys/powerpc/booke/pmap.c
> head/sys/sparc64/sparc64/pmap.c
> head/sys/sys/user.h
> head/sys/vm/vm.h
> head/sys/vm/vm_fault.c
> head/sys/vm/vm_map.c
> head/sys/vm/vm_meter.c
> head/sys/vm/vm_object.c
> head/sys/vm/vm_object.h
> head/sys/vm/vm_page.c
> head/sys/vm/vm_pageout.c
> head/sys/vm/vm_pager.c
> head/sys/vm/vm_pager.h
> head/usr.bin/procstat/procstat_vm.c
>
> Modified: head/sys/amd64/amd64/pmap.c
> ==============================================================================
> --- head/sys/amd64/amd64/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/amd64/amd64/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -3359,7 +3359,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> int pat_mode;
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> if ((addr & (NBPDR - 1)) == 0 && (size & (NBPDR - 1)) == 0) {
> if (!vm_object_populate(object, pindex, pindex + atop(size)))
>
> Modified: head/sys/arm/arm/pmap.c
> ==============================================================================
> --- head/sys/arm/arm/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/arm/arm/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -3101,7 +3101,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> {
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> }
>
>
> Modified: head/sys/conf/files
> ==============================================================================
> --- head/sys/conf/files Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/conf/files Fri Jul 24 13:50:29 2009 (r195840)
> @@ -2637,6 +2637,7 @@ vm/default_pager.c standard
> vm/device_pager.c standard
> vm/phys_pager.c standard
> vm/redzone.c optional DEBUG_REDZONE
> +vm/sg_pager.c standard
> vm/swap_pager.c standard
> vm/uma_core.c standard
> vm/uma_dbg.c standard
>
> Modified: head/sys/fs/procfs/procfs_map.c
> ==============================================================================
> --- head/sys/fs/procfs/procfs_map.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/fs/procfs/procfs_map.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -174,6 +174,7 @@ procfs_doprocmap(PFS_FILL_ARGS)
> type = "swap";
> vp = NULL;
> break;
> + case OBJT_SG:
> case OBJT_DEVICE:
> type = "device";
> vp = NULL;
>
> Modified: head/sys/i386/i386/pmap.c
> ==============================================================================
> --- head/sys/i386/i386/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/i386/i386/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -3448,7 +3448,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> int pat_mode;
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> if (pseflag &&
> (addr & (NBPDR - 1)) == 0 && (size & (NBPDR - 1)) == 0) {
>
> Modified: head/sys/i386/xen/pmap.c
> ==============================================================================
> --- head/sys/i386/xen/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/i386/xen/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -3093,7 +3093,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> vm_page_t p;
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> if (pseflag &&
> ((addr & (NBPDR - 1)) == 0) && ((size & (NBPDR - 1)) == 0)) {
>
> Modified: head/sys/ia64/ia64/pmap.c
> ==============================================================================
> --- head/sys/ia64/ia64/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/ia64/ia64/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -1751,7 +1751,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> {
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> }
>
>
> Modified: head/sys/kern/kern_proc.c
> ==============================================================================
> --- head/sys/kern/kern_proc.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/kern/kern_proc.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -1486,6 +1486,9 @@ sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_A
> case OBJT_DEAD:
> kve->kve_type = KVME_TYPE_DEAD;
> break;
> + case OBJT_SG:
> + kve->kve_type = KVME_TYPE_SG;
> + break;
> default:
> kve->kve_type = KVME_TYPE_UNKNOWN;
> break;
> @@ -1658,6 +1661,9 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_AR
> case OBJT_DEAD:
> kve->kve_type = KVME_TYPE_DEAD;
> break;
> + case OBJT_SG:
> + kve->kve_type = KVME_TYPE_SG;
> + break;
> default:
> kve->kve_type = KVME_TYPE_UNKNOWN;
> break;
>
> Modified: head/sys/mips/mips/pmap.c
> ==============================================================================
> --- head/sys/mips/mips/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/mips/mips/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -2148,7 +2148,7 @@ pmap_object_init_pt(pmap_t pmap, vm_offs
> vm_object_t object, vm_pindex_t pindex, vm_size_t size)
> {
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> }
>
>
> Modified: head/sys/powerpc/booke/pmap.c
> ==============================================================================
> --- head/sys/powerpc/booke/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/powerpc/booke/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -2582,7 +2582,7 @@ mmu_booke_object_init_pt(mmu_t mmu, pmap
> {
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("mmu_booke_object_init_pt: non-device object"));
> }
>
>
> Modified: head/sys/sparc64/sparc64/pmap.c
> ==============================================================================
> --- head/sys/sparc64/sparc64/pmap.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/sparc64/sparc64/pmap.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -1499,7 +1499,7 @@ pmap_object_init_pt(pmap_t pm, vm_offset
> {
>
> VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> - KASSERT(object->type == OBJT_DEVICE,
> + KASSERT(object->type == OBJT_DEVICE || object->type == OBJT_SG,
> ("pmap_object_init_pt: non-device object"));
> }
>
>
> Modified: head/sys/sys/user.h
> ==============================================================================
> --- head/sys/sys/user.h Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/sys/user.h Fri Jul 24 13:50:29 2009 (r195840)
> @@ -340,6 +340,7 @@ struct kinfo_file {
> #define KVME_TYPE_DEVICE 4
> #define KVME_TYPE_PHYS 5
> #define KVME_TYPE_DEAD 6
> +#define KVME_TYPE_SG 7
> #define KVME_TYPE_UNKNOWN 255
>
> #define KVME_PROT_READ 0x00000001
>
> Added: head/sys/vm/sg_pager.c
> ==============================================================================
> --- /dev/null 00:00:00 1970 (empty, because file is newly added)
> +++ head/sys/vm/sg_pager.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -0,0 +1,263 @@
> +/*-
> + * Copyright (c) 2009 Advanced Computing Technologies LLC
> + * Written by: John H. Baldwin <jhb at FreeBSD.org>
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + */
> +
> +#include <sys/cdefs.h>
> +__FBSDID("$FreeBSD$");
> +
> +/*
> + * This pager manages OBJT_SG objects. These objects are backed by
> + * a scatter/gather list of physical address ranges.
> + */
> +
> +#include <sys/param.h>
> +#include <sys/lock.h>
> +#include <sys/mutex.h>
> +#include <sys/sglist.h>
> +#include <vm/vm.h>
> +#include <vm/vm_object.h>
> +#include <vm/vm_page.h>
> +#include <vm/vm_pager.h>
> +#include <vm/uma.h>
> +
> +static void sg_pager_init(void);
> +static vm_object_t sg_pager_alloc(void *, vm_ooffset_t, vm_prot_t,
> + vm_ooffset_t, struct ucred *);
> +static void sg_pager_dealloc(vm_object_t);
> +static int sg_pager_getpages(vm_object_t, vm_page_t *, int, int);
> +static void sg_pager_putpages(vm_object_t, vm_page_t *, int,
> + boolean_t, int *);
> +static boolean_t sg_pager_haspage(vm_object_t, vm_pindex_t, int *,
> + int *);
> +
> +static uma_zone_t fakepg_zone;
> +
> +static vm_page_t sg_pager_getfake(vm_paddr_t, vm_memattr_t);
> +static void sg_pager_putfake(vm_page_t);
> +
> +struct pagerops sgpagerops = {
> + .pgo_init = sg_pager_init,
> + .pgo_alloc = sg_pager_alloc,
> + .pgo_dealloc = sg_pager_dealloc,
> + .pgo_getpages = sg_pager_getpages,
> + .pgo_putpages = sg_pager_putpages,
> + .pgo_haspage = sg_pager_haspage,
> +};
> +
> +static void
> +sg_pager_init(void)
> +{
> +
> + fakepg_zone = uma_zcreate("SG fakepg", sizeof(struct vm_page),
> + NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,
> + UMA_ZONE_NOFREE|UMA_ZONE_VM);
> +}
> +
> +static vm_object_t
> +sg_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot,
> + vm_ooffset_t foff, struct ucred *cred)
> +{
> + struct sglist *sg;
> + vm_object_t object;
> + vm_pindex_t npages, pindex;
> + int i;
> +
> + /*
> + * Offset should be page aligned.
> + */
> + if (foff & PAGE_MASK)
> + return (NULL);
> +
> + /*
> + * The scatter/gather list must only include page-aligned
> + * ranges.
> + */
> + npages = 0;
> + sg = handle;
> + for (i = 0; i < sg->sg_nseg; i++) {
> + if ((sg->sg_segs[i].ss_paddr % PAGE_SIZE) != 0 ||
> + (sg->sg_segs[i].ss_len % PAGE_SIZE) != 0)
> + return (NULL);
> + npages += sg->sg_segs[i].ss_len / PAGE_SIZE;
> + }
> +
> + /*
> + * The scatter/gather list has a fixed size. Refuse requests
> + * to map beyond that.
> + */
> + size = round_page(size);
> + pindex = OFF_TO_IDX(foff + size);
> + if (pindex > npages)
> + return (NULL);
> +
> + /*
> + * Allocate a new object and associate it with the
> + * scatter/gather list. It is ok for our purposes to have
> + * multiple VM objects associated with the same scatter/gather
> + * list because scatter/gather lists are static. This is also
> + * simpler than ensuring a unique object per scatter/gather
> + * list.
> + */
> + object = vm_object_allocate(OBJT_SG, npages);
> + object->handle = sglist_hold(sg);
> + TAILQ_INIT(&object->un_pager.sgp.sgp_pglist);
> + return (object);
> +}
> +
> +static void
> +sg_pager_dealloc(vm_object_t object)
> +{
> + struct sglist *sg;
> + vm_page_t m;
> +
> + /*
> + * Free up our fake pages.
> + */
> + while ((m = TAILQ_FIRST(&object->un_pager.sgp.sgp_pglist)) != 0) {
> + TAILQ_REMOVE(&object->un_pager.sgp.sgp_pglist, m, pageq);
> + sg_pager_putfake(m);
> + }
> +
> + sg = object->handle;
> + sglist_free(sg);
> +}
> +
> +static int
> +sg_pager_getpages(vm_object_t object, vm_page_t *m, int count, int reqpage)
> +{
> + struct sglist *sg;
> + vm_page_t m_paddr, page;
> + vm_pindex_t offset;
> + vm_paddr_t paddr;
> + vm_memattr_t memattr;
> + size_t space;
> + int i;
> +
> + VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
> + sg = object->handle;
> + memattr = object->memattr;
> + VM_OBJECT_UNLOCK(object);
> + offset = m[reqpage]->pindex;
> +
> + /*
> + * Lookup the physical address of the requested page. An initial
> + * value of '1' instead of '0' is used so we can assert that the
> + * page is found since '0' can be a valid page-aligned physical
> + * address.
> + */
> + space = 0;
> + paddr = 1;
> + for (i = 0; i < sg->sg_nseg; i++) {
> + if (space + sg->sg_segs[i].ss_len <= (offset * PAGE_SIZE)) {
> + space += sg->sg_segs[i].ss_len;
> + continue;
> + }
> + paddr = sg->sg_segs[i].ss_paddr + offset * PAGE_SIZE - space;
> + break;
> + }
> + KASSERT(paddr != 1, ("invalid SG page index"));
> +
> + /* If "paddr" is a real page, perform a sanity check on "memattr". */
> + if ((m_paddr = vm_phys_paddr_to_vm_page(paddr)) != NULL &&
> + pmap_page_get_memattr(m_paddr) != memattr) {
> + memattr = pmap_page_get_memattr(m_paddr);
> + printf(
> + "WARNING: A device driver has set \"memattr\" inconsistently.\n");
> + }
> +
> + /* Return a fake page for the requested page. */
> + KASSERT(!(m[reqpage]->flags & PG_FICTITIOUS),
> + ("backing page for SG is fake"));
> +
> + /* Construct a new fake page. */
> + printf("SG: getting fake page for paddr %lx\n", paddr);
> + page = sg_pager_getfake(paddr, memattr);
> + VM_OBJECT_LOCK(object);
> + TAILQ_INSERT_TAIL(&object->un_pager.sgp.sgp_pglist, page, pageq);
> +
> + /* Free the original pages and insert this fake page into the object. */
> + vm_page_lock_queues();
> + for (i = 0; i < count; i++) {
> + printf("SG: freeing VM page %p\n", m[i]);
> + vm_page_free(m[i]);
> + }
> + vm_page_unlock_queues();
> + printf("SG: Inserting new fake page\n");
> + vm_page_insert(page, object, offset);
> + m[reqpage] = page;
> +
> + return (VM_PAGER_OK);
> +}
> +
> +static void
> +sg_pager_putpages(vm_object_t object, vm_page_t *m, int count,
> + boolean_t sync, int *rtvals)
> +{
> +
> + panic("sg_pager_putpage called");
> +}
> +
> +static boolean_t
> +sg_pager_haspage(vm_object_t object, vm_pindex_t pindex, int *before,
> + int *after)
> +{
> +
> + if (before != NULL)
> + *before = 0;
> + if (after != NULL)
> + *after = 0;
> + return (TRUE);
> +}
> +
> +/*
> + * Create a fictitious page with the specified physical address and memory
> + * attribute. The memory attribute is the only the machine-dependent aspect
> + * of a fictitious page that must be initialized.
> + */
> +static vm_page_t
> +sg_pager_getfake(vm_paddr_t paddr, vm_memattr_t memattr)
> +{
> + vm_page_t m;
> +
> + m = uma_zalloc(fakepg_zone, M_WAITOK | M_ZERO);
> + m->phys_addr = paddr;
> + /* Fictitious pages don't use "segind". */
> + m->flags = PG_FICTITIOUS;
> + /* Fictitious pages don't use "order" or "pool". */
> + m->oflags = VPO_BUSY;
> + m->wire_count = 1;
> + pmap_page_set_memattr(m, memattr);
> + return (m);
> +}
> +
> +static void
> +sg_pager_putfake(vm_page_t m)
> +{
> +
> + if (!(m->flags & PG_FICTITIOUS))
> + panic("sg_pager_putfake: bad page");
> + uma_zfree(fakepg_zone, m);
> +}
>
> Modified: head/sys/vm/vm.h
> ==============================================================================
> --- head/sys/vm/vm.h Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm.h Fri Jul 24 13:50:29 2009 (r195840)
> @@ -89,7 +89,7 @@ typedef u_char vm_prot_t; /* protection
> #define VM_PROT_DEFAULT VM_PROT_ALL
>
> enum obj_type { OBJT_DEFAULT, OBJT_SWAP, OBJT_VNODE, OBJT_DEVICE, OBJT_PHYS,
> - OBJT_DEAD };
> + OBJT_DEAD, OBJT_SG };
> typedef u_char objtype_t;
>
> union vm_map_object;
>
> Modified: head/sys/vm/vm_fault.c
> ==============================================================================
> --- head/sys/vm/vm_fault.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_fault.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -472,7 +472,8 @@ readrest:
> (fs.first_object == fs.object ||
> (is_first_object_locked = VM_OBJECT_TRYLOCK(fs.first_object))) &&
> fs.first_object->type != OBJT_DEVICE &&
> - fs.first_object->type != OBJT_PHYS) {
> + fs.first_object->type != OBJT_PHYS &&
> + fs.first_object->type != OBJT_SG) {
> vm_pindex_t firstpindex, tmppindex;
>
> if (fs.first_pindex < 2 * VM_FAULT_READ)
>
> Modified: head/sys/vm/vm_map.c
> ==============================================================================
> --- head/sys/vm/vm_map.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_map.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -1719,7 +1719,7 @@ vm_map_pmap_enter(vm_map_t map, vm_offse
> if ((prot & (VM_PROT_READ | VM_PROT_EXECUTE)) == 0 || object == NULL)
> return;
> VM_OBJECT_LOCK(object);
> - if (object->type == OBJT_DEVICE) {
> + if (object->type == OBJT_DEVICE || object->type == OBJT_SG) {
> pmap_object_init_pt(map->pmap, addr, object, pindex, size);
> goto unlock_return;
> }
> @@ -2247,7 +2247,8 @@ done:
> */
> vm_fault_unwire(map, entry->start, entry->end,
> entry->object.vm_object != NULL &&
> - entry->object.vm_object->type == OBJT_DEVICE);
> + (entry->object.vm_object->type == OBJT_DEVICE ||
> + entry->object.vm_object->type == OBJT_SG));
> }
> }
> KASSERT(entry->eflags & MAP_ENTRY_IN_TRANSITION,
> @@ -2366,7 +2367,8 @@ vm_map_wire(vm_map_t map, vm_offset_t st
> saved_start = entry->start;
> saved_end = entry->end;
> fictitious = entry->object.vm_object != NULL &&
> - entry->object.vm_object->type == OBJT_DEVICE;
> + (entry->object.vm_object->type == OBJT_DEVICE ||
> + entry->object.vm_object->type == OBJT_SG);
> /*
> * Release the map lock, relying on the in-transition
> * mark.
> @@ -2462,7 +2464,8 @@ done:
> */
> vm_fault_unwire(map, entry->start, entry->end,
> entry->object.vm_object != NULL &&
> - entry->object.vm_object->type == OBJT_DEVICE);
> + (entry->object.vm_object->type == OBJT_DEVICE ||
> + entry->object.vm_object->type == OBJT_SG));
> }
> }
> next_entry_done:
> @@ -2595,7 +2598,8 @@ vm_map_entry_unwire(vm_map_t map, vm_map
> {
> vm_fault_unwire(map, entry->start, entry->end,
> entry->object.vm_object != NULL &&
> - entry->object.vm_object->type == OBJT_DEVICE);
> + (entry->object.vm_object->type == OBJT_DEVICE ||
> + entry->object.vm_object->type == OBJT_SG));
> entry->wired_count = 0;
> }
>
>
> Modified: head/sys/vm/vm_meter.c
> ==============================================================================
> --- head/sys/vm/vm_meter.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_meter.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -205,7 +205,7 @@ vmtotal(SYSCTL_HANDLER_ARGS)
> * synchronization should not impair the accuracy of
> * the reported statistics.
> */
> - if (object->type == OBJT_DEVICE) {
> + if (object->type == OBJT_DEVICE || object->type == OBJT_SG) {
> /*
> * Devices, like /dev/mem, will badly skew our totals.
> */
>
> Modified: head/sys/vm/vm_object.c
> ==============================================================================
> --- head/sys/vm/vm_object.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_object.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -309,6 +309,7 @@ vm_object_set_memattr(vm_object_t object
> case OBJT_DEFAULT:
> case OBJT_DEVICE:
> case OBJT_PHYS:
> + case OBJT_SG:
> case OBJT_SWAP:
> case OBJT_VNODE:
> if (!TAILQ_EMPTY(&object->memq))
>
> Modified: head/sys/vm/vm_object.h
> ==============================================================================
> --- head/sys/vm/vm_object.h Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_object.h Fri Jul 24 13:50:29 2009 (r195840)
> @@ -124,6 +124,15 @@ struct vm_object {
> } devp;
>
> /*
> + * SG pager
> + *
> + * sgp_pglist - list of allocated pages
> + */
> + struct {
> + TAILQ_HEAD(, vm_page) sgp_pglist;
> + } sgp;
> +
> + /*
> * Swap pager
> *
> * swp_bcount - number of swap 'swblock' metablocks, each
>
> Modified: head/sys/vm/vm_page.c
> ==============================================================================
> --- head/sys/vm/vm_page.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_page.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -1163,7 +1163,7 @@ vm_page_alloc(vm_object_t object, vm_pin
> if (object != NULL) {
> /* Ignore device objects; the pager sets "memattr" for them. */
> if (object->memattr != VM_MEMATTR_DEFAULT &&
> - object->type != OBJT_DEVICE)
> + object->type != OBJT_DEVICE && object->type != OBJT_SG)
> pmap_page_set_memattr(m, object->memattr);
> vm_page_insert(m, object, pindex);
> } else
>
> Modified: head/sys/vm/vm_pageout.c
> ==============================================================================
> --- head/sys/vm/vm_pageout.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_pageout.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -513,7 +513,9 @@ vm_pageout_object_deactivate_pages(pmap,
> int actcount, rcount, remove_mode;
>
> VM_OBJECT_LOCK_ASSERT(first_object, MA_OWNED);
> - if (first_object->type == OBJT_DEVICE || first_object->type == OBJT_PHYS)
> + if (first_object->type == OBJT_DEVICE ||
> + first_object->type == OBJT_SG ||
> + first_object->type == OBJT_PHYS)
> return;
> for (object = first_object;; object = backing_object) {
> if (pmap_resident_count(pmap) <= desired)
>
> Modified: head/sys/vm/vm_pager.c
> ==============================================================================
> --- head/sys/vm/vm_pager.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_pager.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -160,7 +160,8 @@ struct pagerops *pagertab[] = {
> &vnodepagerops, /* OBJT_VNODE */
> &devicepagerops, /* OBJT_DEVICE */
> &physpagerops, /* OBJT_PHYS */
> - &deadpagerops /* OBJT_DEAD */
> + &deadpagerops, /* OBJT_DEAD */
> + &sgpagerops /* OBJT_SG */
> };
>
> static const int npagers = sizeof(pagertab) / sizeof(pagertab[0]);
>
> Modified: head/sys/vm/vm_pager.h
> ==============================================================================
> --- head/sys/vm/vm_pager.h Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/sys/vm/vm_pager.h Fri Jul 24 13:50:29 2009 (r195840)
> @@ -70,6 +70,7 @@ extern struct pagerops swappagerops;
> extern struct pagerops vnodepagerops;
> extern struct pagerops devicepagerops;
> extern struct pagerops physpagerops;
> +extern struct pagerops sgpagerops;
>
> /*
> * get/put return values
>
> Modified: head/usr.bin/procstat/procstat_vm.c
> ==============================================================================
> --- head/usr.bin/procstat/procstat_vm.c Fri Jul 24 13:40:25 2009 (r195839)
> +++ head/usr.bin/procstat/procstat_vm.c Fri Jul 24 13:50:29 2009 (r195840)
> @@ -93,6 +93,9 @@ procstat_vm(pid_t pid, struct kinfo_proc
> case KVME_TYPE_DEAD:
> str = "dd";
> break;
> + case KVME_TYPE_SG:
> + str = "sg";
> + break;
> case KVME_TYPE_UNKNOWN:
> default:
> str = "??";
>
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