Date: Mon, 14 Sep 2009 17:34:49 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r197197 - in stable/7: sys sys/amd64/amd64 sys/arm/arm sys/conf sys/contrib/pf sys/fs/procfs sys/i386/i386 sys/ia64/ia64 sys/kern sys/sparc64/sparc64 sys/sys sys/vm usr.bin/procstat Message-ID: <200909141734.n8EHYng3061392@svn.freebsd.org>
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Author: jhb Date: Mon Sep 14 17:34:49 2009 New Revision: 197197 URL: http://svn.freebsd.org/changeset/base/197197 Log: MFC 195840, 195844, and 196637: 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. Added: stable/7/sys/vm/sg_pager.c - copied, changed from r195840, head/sys/vm/sg_pager.c Modified: stable/7/sys/ (props changed) stable/7/sys/amd64/amd64/pmap.c stable/7/sys/arm/arm/pmap.c stable/7/sys/conf/files stable/7/sys/contrib/pf/ (props changed) stable/7/sys/fs/procfs/procfs_map.c stable/7/sys/i386/i386/pmap.c stable/7/sys/ia64/ia64/pmap.c stable/7/sys/kern/kern_proc.c stable/7/sys/sparc64/sparc64/pmap.c stable/7/sys/sys/user.h stable/7/sys/vm/vm.h stable/7/sys/vm/vm_fault.c stable/7/sys/vm/vm_map.c stable/7/sys/vm/vm_meter.c stable/7/sys/vm/vm_object.c stable/7/sys/vm/vm_object.h stable/7/sys/vm/vm_page.c stable/7/sys/vm/vm_pageout.c stable/7/sys/vm/vm_pager.c stable/7/sys/vm/vm_pager.h stable/7/usr.bin/procstat/ (props changed) stable/7/usr.bin/procstat/procstat_vm.c Modified: stable/7/sys/amd64/amd64/pmap.c ============================================================================== --- stable/7/sys/amd64/amd64/pmap.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/amd64/amd64/pmap.c Mon Sep 14 17:34:49 2009 (r197197) @@ -3350,7 +3350,7 @@ 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))) @@ -4592,7 +4592,8 @@ vm_offset_t pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size) { - if ((obj == NULL) || (size < NBPDR) || (obj->type != OBJT_DEVICE)) { + if ((obj == NULL) || (size < NBPDR) || + (obj->type != OBJT_DEVICE && obj->type != OBJT_SG)) { return addr; } Modified: stable/7/sys/arm/arm/pmap.c ============================================================================== --- stable/7/sys/arm/arm/pmap.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/arm/arm/pmap.c Mon Sep 14 17:34:49 2009 (r197197) @@ -3071,7 +3071,7 @@ 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: stable/7/sys/conf/files ============================================================================== --- stable/7/sys/conf/files Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/conf/files Mon Sep 14 17:34:49 2009 (r197197) @@ -2210,6 +2210,7 @@ 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: stable/7/sys/fs/procfs/procfs_map.c ============================================================================== --- stable/7/sys/fs/procfs/procfs_map.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/fs/procfs/procfs_map.c Mon Sep 14 17:34:49 2009 (r197197) @@ -177,6 +177,7 @@ procfs_doprocmap(PFS_FILL_ARGS) type = "swap"; vp = NULL; break; + case OBJT_SG: case OBJT_DEVICE: type = "device"; vp = NULL; Modified: stable/7/sys/i386/i386/pmap.c ============================================================================== --- stable/7/sys/i386/i386/pmap.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/i386/i386/pmap.c Mon Sep 14 17:34:49 2009 (r197197) @@ -3474,7 +3474,7 @@ 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) { @@ -4712,7 +4712,8 @@ vm_offset_t pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size) { - if ((obj == NULL) || (size < NBPDR) || (obj->type != OBJT_DEVICE)) { + if ((obj == NULL) || (size < NBPDR) || + (obj->type != OBJT_DEVICE && obj->type != OBJT_SG)) { return addr; } Modified: stable/7/sys/ia64/ia64/pmap.c ============================================================================== --- stable/7/sys/ia64/ia64/pmap.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/ia64/ia64/pmap.c Mon Sep 14 17:34:49 2009 (r197197) @@ -1737,7 +1737,7 @@ 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: stable/7/sys/kern/kern_proc.c ============================================================================== --- stable/7/sys/kern/kern_proc.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/kern/kern_proc.c Mon Sep 14 17:34:49 2009 (r197197) @@ -1488,6 +1488,9 @@ 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; @@ -1659,6 +1662,9 @@ 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: stable/7/sys/sparc64/sparc64/pmap.c ============================================================================== --- stable/7/sys/sparc64/sparc64/pmap.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/sparc64/sparc64/pmap.c Mon Sep 14 17:34:49 2009 (r197197) @@ -1495,7 +1495,7 @@ 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: stable/7/sys/sys/user.h ============================================================================== --- stable/7/sys/sys/user.h Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/sys/user.h Mon Sep 14 17:34:49 2009 (r197197) @@ -334,6 +334,7 @@ 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 Copied and modified: stable/7/sys/vm/sg_pager.c (from r195840, head/sys/vm/sg_pager.c) ============================================================================== --- head/sys/vm/sg_pager.c Fri Jul 24 13:50:29 2009 (r195840, copy source) +++ stable/7/sys/vm/sg_pager.c Mon Sep 14 17:34:49 2009 (r197197) @@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/mutex.h> #include <sys/sglist.h> +#include <sys/systm.h> #include <vm/vm.h> #include <vm/vm_object.h> #include <vm/vm_page.h> @@ -45,7 +46,7 @@ __FBSDID("$FreeBSD$"); 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 *); + vm_ooffset_t); 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, @@ -78,7 +79,7 @@ sg_pager_init(void) static vm_object_t sg_pager_alloc(void *handle, vm_ooffset_t size, vm_prot_t prot, - vm_ooffset_t foff, struct ucred *cred) + vm_ooffset_t foff) { struct sglist *sg; vm_object_t object; @@ -193,21 +194,18 @@ sg_pager_getpages(vm_object_t object, vm ("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]); + for (i = 0; i < count; 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; + page->valid = VM_PAGE_BITS_ALL; return (VM_PAGER_OK); } Modified: stable/7/sys/vm/vm.h ============================================================================== --- stable/7/sys/vm/vm.h Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm.h Mon Sep 14 17:34:49 2009 (r197197) @@ -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: stable/7/sys/vm/vm_fault.c ============================================================================== --- stable/7/sys/vm/vm_fault.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_fault.c Mon Sep 14 17:34:49 2009 (r197197) @@ -485,7 +485,8 @@ 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: stable/7/sys/vm/vm_map.c ============================================================================== --- stable/7/sys/vm/vm_map.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_map.c Mon Sep 14 17:34:49 2009 (r197197) @@ -1478,7 +1478,7 @@ 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; } @@ -1954,7 +1954,8 @@ 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, @@ -2073,7 +2074,8 @@ 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. @@ -2169,7 +2171,8 @@ 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: @@ -2294,7 +2297,8 @@ 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: stable/7/sys/vm/vm_meter.c ============================================================================== --- stable/7/sys/vm/vm_meter.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_meter.c Mon Sep 14 17:34:49 2009 (r197197) @@ -211,7 +211,7 @@ 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: stable/7/sys/vm/vm_object.c ============================================================================== --- stable/7/sys/vm/vm_object.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_object.c Mon Sep 14 17:34:49 2009 (r197197) @@ -306,6 +306,7 @@ 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: stable/7/sys/vm/vm_object.h ============================================================================== --- stable/7/sys/vm/vm_object.h Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_object.h Mon Sep 14 17:34:49 2009 (r197197) @@ -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: stable/7/sys/vm/vm_page.c ============================================================================== --- stable/7/sys/vm/vm_page.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_page.c Mon Sep 14 17:34:49 2009 (r197197) @@ -1149,7 +1149,7 @@ 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: stable/7/sys/vm/vm_pageout.c ============================================================================== --- stable/7/sys/vm/vm_pageout.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_pageout.c Mon Sep 14 17:34:49 2009 (r197197) @@ -516,7 +516,9 @@ 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: stable/7/sys/vm/vm_pager.c ============================================================================== --- stable/7/sys/vm/vm_pager.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_pager.c Mon Sep 14 17:34:49 2009 (r197197) @@ -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: stable/7/sys/vm/vm_pager.h ============================================================================== --- stable/7/sys/vm/vm_pager.h Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/sys/vm/vm_pager.h Mon Sep 14 17:34:49 2009 (r197197) @@ -71,6 +71,7 @@ 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: stable/7/usr.bin/procstat/procstat_vm.c ============================================================================== --- stable/7/usr.bin/procstat/procstat_vm.c Mon Sep 14 16:52:38 2009 (r197196) +++ stable/7/usr.bin/procstat/procstat_vm.c Mon Sep 14 17:34:49 2009 (r197197) @@ -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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