From 81dc370a9d5a2ec97a413123079d94be91110fbe Mon Sep 17 00:00:00 2001 From: dg Date: Sun, 7 Aug 1994 13:10:43 +0000 Subject: Provide support for upcoming merged VM/buffer cache, and fixed a few bugs that haven't appeared to manifest themselves (yet). Submitted by: John Dyson --- sys/amd64/amd64/pmap.c | 3 ++- sys/i386/i386/pmap.c | 3 ++- sys/kern/kern_physio.c | 6 +++++- sys/vm/swap_pager.c | 21 ++++++--------------- sys/vm/vm_kern.c | 6 +----- sys/vm/vm_object.c | 15 ++++++++++++--- sys/vm/vm_page.c | 22 +++++++++++----------- sys/vm/vm_pager.c | 10 +++++----- sys/vm/vnode_pager.c | 19 +++++++------------ 9 files changed, 51 insertions(+), 54 deletions(-) (limited to 'sys') diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index b772c30..13b40b2 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 - * $Id: pmap.c,v 1.28 1994/08/06 09:15:15 davidg Exp $ + * $Id: pmap.c,v 1.29 1994/08/06 10:25:36 davidg Exp $ */ /* @@ -695,6 +695,7 @@ pmap_alloc_pv_entry() * let the kernel see it */ pmap_kenter(pvva, VM_PAGE_TO_PHYS(m)); + tlbflush(); entry = (pv_entry_t) pvva; /* diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index b772c30..13b40b2 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 - * $Id: pmap.c,v 1.28 1994/08/06 09:15:15 davidg Exp $ + * $Id: pmap.c,v 1.29 1994/08/06 10:25:36 davidg Exp $ */ /* @@ -695,6 +695,7 @@ pmap_alloc_pv_entry() * let the kernel see it */ pmap_kenter(pvva, VM_PAGE_TO_PHYS(m)); + tlbflush(); entry = (pv_entry_t) pvva; /* diff --git a/sys/kern/kern_physio.c b/sys/kern/kern_physio.c index 487e38e..0fcb0bf 100644 --- a/sys/kern/kern_physio.c +++ b/sys/kern/kern_physio.c @@ -16,7 +16,7 @@ * 4. Modifications may be freely made to this file if the above conditions * are met. * - * $Id: kern_physio.c,v 1.3 1994/08/02 07:42:05 davidg Exp $ + * $Id: kern_physio.c,v 1.4 1994/08/06 09:15:28 davidg Exp $ */ #include @@ -27,6 +27,7 @@ #include static void physwakeup(); +u_int minphys(struct buf *bp); int physio(strategy, bp, dev, rw, minp, uio) @@ -78,6 +79,9 @@ physio(strategy, bp, dev, rw, minp, uio) caddr_t adr; bp->b_bcount = uio->uio_iov[i].iov_len; + bp->b_bcount = minp( bp); + if( minp != minphys) + bp->b_bcount = minphys( bp); bp->b_bufsize = bp->b_bcount; bp->b_flags = B_BUSY | B_PHYS | B_CALL | bufflags; bp->b_iodone = physwakeup; diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c index 189929c..ad3d3db 100644 --- a/sys/vm/swap_pager.c +++ b/sys/vm/swap_pager.c @@ -39,7 +39,7 @@ * from: Utah $Hdr: swap_pager.c 1.4 91/04/30$ * * @(#)swap_pager.c 8.9 (Berkeley) 3/21/94 - * $Id: swap_pager.c,v 1.4 1994/08/02 07:55:13 davidg Exp $ + * $Id: swap_pager.c,v 1.5 1994/08/06 09:15:36 davidg Exp $ */ /* @@ -1366,17 +1366,6 @@ retrygetspace: * get a swap pager clean data structure, block until we get it */ if (swap_pager_free.tqh_first == NULL) { -/* - if (flags & B_ASYNC) { - for(i=0;iswb_locked; - } - return VM_PAGER_AGAIN; - } -*/ - s = splbio(); if( curproc == pageproc) (void) swap_pager_clean(); @@ -1442,9 +1431,11 @@ retrygetspace: bp->b_flags = B_BUSY; bp->b_proc = &proc0; /* XXX (but without B_PHYS set this is ok) */ bp->b_rcred = bp->b_wcred = bp->b_proc->p_ucred; - crhold(bp->b_rcred); - crhold(bp->b_wcred); - bp->b_un.b_addr = (caddr_t) kva; + if( bp->b_rcred != NOCRED) + crhold(bp->b_rcred); + if( bp->b_wcred != NOCRED) + crhold(bp->b_wcred); + bp->b_data = (caddr_t) kva; bp->b_blkno = reqaddr[0]; bgetvp( swapdev_vp, bp); diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c index 7c8c619..202ca63 100644 --- a/sys/vm/vm_kern.c +++ b/sys/vm/vm_kern.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_kern.c,v 1.3 1994/08/02 07:55:22 davidg Exp $ + * $Id: vm_kern.c,v 1.4 1994/08/06 09:15:38 davidg Exp $ */ /* @@ -371,10 +371,6 @@ kmem_malloc(map, size, canwait) vm_object_lock(kmem_object); m = vm_page_lookup(kmem_object, offset + i); vm_object_unlock(kmem_object); -/* - pmap_enter(map->pmap, addr + i, VM_PAGE_TO_PHYS(m), - VM_PROT_DEFAULT, TRUE); -*/ pmap_kenter( addr + i, VM_PAGE_TO_PHYS(m)); } pmap_update(); diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index 8b8e606..57b66ec 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id$ + * $Id: vm_object.c,v 1.3 1994/08/02 07:55:29 davidg Exp $ */ /* @@ -353,7 +353,7 @@ vm_object_terminate(object) VM_PAGE_CHECK(p); vm_page_lock_queues(); - s = splimp(); + s = splhigh(); if (p->flags & PG_ACTIVE) { TAILQ_REMOVE(&vm_page_queue_active, p, pageq); p->flags &= ~PG_ACTIVE; @@ -613,7 +613,6 @@ again: vm_page_deactivate(p); vm_page_unlock_queues(); } - p->flags &= ~PG_BUSY; PAGE_WAKEUP(p); goto again; } @@ -713,6 +712,7 @@ vm_object_pmap_remove(object, start, end) register vm_offset_t end; { register vm_page_t p; + int s; if (object == NULL) return; @@ -721,11 +721,14 @@ vm_object_pmap_remove(object, start, end) again: for (p = object->memq.tqh_first; p != NULL; p = p->listq.tqe_next) { if ((start <= p->offset) && (p->offset < end)) { + s = splhigh(); if (p->flags & PG_BUSY) { p->flags |= PG_WANTED; tsleep((caddr_t) p, PVM, "vmopmr", 0); + splx(s); goto again; } + splx(s); pmap_page_protect(VM_PAGE_TO_PHYS(p), VM_PROT_NONE); if ((p->flags & PG_CLEAN) == 0) p->flags |= PG_LAUNDRY; @@ -1456,11 +1459,14 @@ again: for (p = object->memq.tqh_first; (p != NULL && size > 0); p = next) { next = p->listq.tqe_next; if ((start <= p->offset) && (p->offset < end)) { + s=splhigh(); if (p->flags & PG_BUSY) { p->flags |= PG_WANTED; tsleep((caddr_t) p, PVM, "vmopar", 0); + splx(s); goto again; } + splx(s); pmap_page_protect(VM_PAGE_TO_PHYS(p), VM_PROT_NONE); vm_page_lock_queues(); vm_page_free(p); @@ -1471,11 +1477,14 @@ again: } else { while (size > 0) { while (p = vm_page_lookup(object, start)) { + s = splhigh(); if (p->flags & PG_BUSY) { p->flags |= PG_WANTED; tsleep((caddr_t) p, PVM, "vmopar", 0); + splx(s); goto again; } + splx(s); pmap_page_protect(VM_PAGE_TO_PHYS(p), VM_PROT_NONE); vm_page_lock_queues(); vm_page_free(p); diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index 4304100..6d75618 100644 --- a/sys/vm/vm_page.c +++ b/sys/vm/vm_page.c @@ -34,7 +34,7 @@ * SUCH DAMAGE. * * from: @(#)vm_page.c 7.4 (Berkeley) 5/7/91 - * $Id: vm_page.c,v 1.2 1994/05/25 09:20:05 rgrimes Exp $ + * $Id: vm_page.c,v 1.3 1994/08/01 11:25:44 davidg Exp $ */ /* @@ -387,7 +387,7 @@ void vm_page_insert(mem, object, offset) */ bucket = &vm_page_buckets[vm_page_hash(object, offset)]; - s = splimp(); + s = splhigh(); simple_lock(&bucket_lock); TAILQ_INSERT_TAIL(bucket, mem, hashq); simple_unlock(&bucket_lock); @@ -434,7 +434,7 @@ void vm_page_remove(mem) */ bucket = &vm_page_buckets[vm_page_hash(mem->object, mem->offset)]; - s = splimp(); + s = splhigh(); simple_lock(&bucket_lock); TAILQ_REMOVE(bucket, mem, hashq); simple_unlock(&bucket_lock); @@ -479,7 +479,7 @@ vm_page_t vm_page_lookup(object, offset) bucket = &vm_page_buckets[vm_page_hash(object, offset)]; - s = splimp(); + s = splhigh(); simple_lock(&bucket_lock); for (mem = bucket->tqh_first; mem != NULL; mem = mem->hashq.tqe_next) { VM_PAGE_CHECK(mem); @@ -534,7 +534,7 @@ vm_page_alloc(object, offset) register vm_page_t mem; int s; - s = splimp(); + s = splhigh(); simple_lock(&vm_page_queue_free_lock); if ( object != kernel_object && object != kmem_object && @@ -596,7 +596,7 @@ void vm_page_free(mem) register vm_page_t mem; { int s; - s = splimp(); + s = splhigh(); vm_page_remove(mem); if (mem->flags & PG_ACTIVE) { TAILQ_REMOVE(&vm_page_queue_active, mem, pageq); @@ -667,7 +667,7 @@ void vm_page_wire(mem) VM_PAGE_CHECK(mem); if (mem->wire_count == 0) { - s = splimp(); + s = splhigh(); if (mem->flags & PG_ACTIVE) { TAILQ_REMOVE(&vm_page_queue_active, mem, pageq); cnt.v_active_count--; @@ -698,7 +698,7 @@ void vm_page_unwire(mem) int s; VM_PAGE_CHECK(mem); - s = splimp(); + s = splhigh(); if( mem->wire_count) mem->wire_count--; @@ -738,7 +738,7 @@ vm_page_deactivate(m) * Paul Mackerras (paulus@cs.anu.edu.au) 9-Jan-93. */ - spl = splimp(); + spl = splhigh(); if (!(m->flags & PG_INACTIVE) && m->wire_count == 0 && m->hold_count == 0) { @@ -781,7 +781,7 @@ void vm_page_deactivate(m) int s; VM_PAGE_CHECK(m); - s = splimp(); + s = splhigh(); /* * Only move active pages -- ignore locked or already * inactive ones. @@ -824,7 +824,7 @@ void vm_page_activate(m) int s; VM_PAGE_CHECK(m); - s = splimp(); + s = splhigh(); if (m->flags & PG_INACTIVE) { TAILQ_REMOVE(&vm_page_queue_inactive, m, pageq); cnt.v_inactive_count--; diff --git a/sys/vm/vm_pager.c b/sys/vm/vm_pager.c index af6b3ea..1d39709 100644 --- a/sys/vm/vm_pager.c +++ b/sys/vm/vm_pager.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_pager.c,v 1.3 1994/08/02 07:55:35 davidg Exp $ + * $Id: vm_pager.c,v 1.4 1994/08/06 09:15:40 davidg Exp $ */ /* @@ -280,8 +280,8 @@ vm_pager_map_page(m) vm_offset_t kva; kva = kmem_alloc_wait(pager_map, PAGE_SIZE); - pmap_enter(vm_map_pmap(pager_map), kva, VM_PAGE_TO_PHYS(m), - VM_PROT_DEFAULT, TRUE); + pmap_kenter(kva, VM_PAGE_TO_PHYS(m)); + pmap_update(); return(kva); } @@ -289,6 +289,7 @@ void vm_pager_unmap_page(kva) vm_offset_t kva; { + pmap_kremove(kva); kmem_free_wakeup(pager_map, kva, PAGE_SIZE); } @@ -298,7 +299,7 @@ vm_pager_atop(kva) { vm_offset_t pa; - pa = pmap_extract(vm_map_pmap(pager_map), kva); + pa = pmap_kextract( kva); if (pa == 0) panic("vm_pager_atop"); return (PHYS_TO_VM_PAGE(pa)); @@ -353,7 +354,6 @@ getpbuf() { s = splbio(); /* get a bp from the swap buffer header pool */ -tryagain: while ((bp = bswlist.tqh_first) == NULL) { bswneeded = 1; tsleep((caddr_t)&bswneeded, PVM, "wswbuf", 0); diff --git a/sys/vm/vnode_pager.c b/sys/vm/vnode_pager.c index aad8ebd..e6e8f88 100644 --- a/sys/vm/vnode_pager.c +++ b/sys/vm/vnode_pager.c @@ -37,7 +37,7 @@ * SUCH DAMAGE. * * from: @(#)vnode_pager.c 7.5 (Berkeley) 4/20/91 - * $Id: vnode_pager.c,v 1.4 1994/08/06 09:15:42 davidg Exp $ + * $Id: vnode_pager.c,v 1.5 1994/08/06 10:25:50 davidg Exp $ */ /* @@ -520,7 +520,6 @@ void vnode_pager_iodone(bp) struct buf *bp; { - int s = splbio(); bp->b_flags |= B_DONE; wakeup((caddr_t) bp); if( bp->b_flags & B_ASYNC) { @@ -536,6 +535,10 @@ vnode_pager_iodone(bp) bp->b_bufsize - bp->b_bcount); npages = (bp->b_bufsize + PAGE_SIZE - 1) / PAGE_SIZE; +/* + printf("bcount: %d, bufsize: %d, npages: %d\n", + bp->b_bcount, bp->b_bufsize, npages); +*/ for( i = 0; i < npages; i++) { m = PHYS_TO_VM_PAGE(pmap_kextract(paddr + i * PAGE_SIZE)); obj = m->object; @@ -547,6 +550,7 @@ vnode_pager_iodone(bp) panic("vnode_pager_iodone: page is gone!!!"); } } + pmap_qremove( paddr, npages); if( obj) { --obj->paging_in_progress; if( obj->paging_in_progress == 0) @@ -555,11 +559,8 @@ vnode_pager_iodone(bp) panic("vnode_pager_iodone: object is gone???"); } HOLDRELE(bp->b_vp); - splx(s); relpbuf(bp); - return; } - splx(s); } /* @@ -575,7 +576,6 @@ vnode_pager_input_smlfs(vnp, m) vm_offset_t paging_offset; struct vnode *dp, *vp; struct buf *bp; - vm_offset_t mapsize; vm_offset_t foff; vm_offset_t kva; int fileaddr; @@ -768,7 +768,6 @@ vnode_pager_input(vnp, m, count, reqpage) vm_object_t object; vm_offset_t paging_offset; struct vnode *dp, *vp; - vm_offset_t mapsize; int bsize; int first, last; @@ -797,7 +796,6 @@ vnode_pager_input(vnp, m, count, reqpage) * originally, we did not check for an error return value -- assuming * an fs always has a bmap entry point -- that assumption is wrong!!! */ - mapsize = 0; foff = m[reqpage]->offset + paging_offset; /* @@ -890,7 +888,7 @@ vnode_pager_input(vnp, m, count, reqpage) * unmap the page and free the kva */ pmap_qremove( kva, 1); - kmem_free_wakeup(pager_map, kva, mapsize); + kmem_free_wakeup(pager_map, kva, PAGE_SIZE); /* * release the buffer back to the block subsystem @@ -1087,7 +1085,6 @@ vnode_pager_input(vnp, m, count, reqpage) finishup: for (i = 0; i < count; i++) { - pmap_clear_modify(VM_PAGE_TO_PHYS(m[i])); m[i]->flags |= PG_CLEAN; m[i]->flags &= ~PG_LAUNDRY; if (i != reqpage) { @@ -1189,7 +1186,6 @@ vnode_pager_output_smlfs(vnp, m) vm_offset_t paging_offset; struct vnode *dp, *vp; struct buf *bp; - vm_offset_t mapsize; vm_offset_t foff; vm_offset_t kva; int fileaddr; @@ -1286,7 +1282,6 @@ vnode_pager_output(vnp, m, count, rtvals) vm_offset_t paging_offset; struct vnode *dp, *vp; struct buf *bp; - vm_offset_t mapsize; vm_offset_t reqaddr; int bsize; int s; -- cgit v1.1