Made the VM a lot calmer if you wish; moved many dprintf()s into the new
TRACE() macro. Renamed the old TRACE macro to TRACEPFAULT. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4343 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
parent
5f993f93ff
commit
44e874a74d
@ -36,13 +36,20 @@
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#include <stdlib.h>
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#include <stdio.h>
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#define TRACE_VM 1
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#define TRACE_VM 0
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#if TRACE_VM
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# define TRACE(x) dprintf x
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#else
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# define TRACE(x) ;
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#endif
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#define TRACE_PFAULT 0
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#if TRACE_PFAULT
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# define TRACEPFAULT dprintf("in pfault at line %d\n", __LINE__)
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#else
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# define TRACEPFAULT
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#endif
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#define ROUNDUP(a, b) (((a) + ((b)-1)) & ~((b)-1))
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#define ROUNDOWN(a, b) (((a) / (b)) * (b))
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@ -205,15 +212,17 @@ static vm_region *_vm_create_region_struct(vm_address_space *aspace, const char
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return region;
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}
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// must be called with this address space's virtual_map.sem held
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static int find_and_insert_region_slot(vm_virtual_map *map, addr start, addr size, addr end, int addr_type, vm_region *region)
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static int
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find_and_insert_region_slot(vm_virtual_map *map, addr start, addr size, addr end, int addr_type, vm_region *region)
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{
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vm_region *last_r = NULL;
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vm_region *next_r;
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bool foundspot = false;
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dprintf("find_and_insert_region_slot: map %p, start 0x%lx, size %ld, end 0x%lx, addr_type %d, region %p\n",
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map, start, size, end, addr_type, region);
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TRACE(("find_and_insert_region_slot: map %p, start 0x%lx, size %ld, end 0x%lx, addr_type %d, region %p\n",
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map, start, size, end, addr_type, region));
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// dprintf("map->base 0x%x, map->size 0x%x\n", map->base, map->size);
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// do some sanity checking
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@ -326,8 +335,8 @@ static int map_backing_store(vm_address_space *aspace, vm_store *store,
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int err;
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// dprintf("map_backing_store: aspace 0x%x, store 0x%x, *vaddr 0x%x, offset 0x%Lx, size %d, addr_type %d, wiring %d, lock %d, _region 0x%x, region_name '%s'\n",
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// aspace, store, *vaddr, offset, size, addr_type, wiring, lock, _region, region_name);
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TRACE(("map_backing_store: aspace 0x%x, store 0x%x, *vaddr 0x%x, offset 0x%Lx, size %d, addr_type %d, wiring %d, lock %d, _region 0x%x, region_name '%s'\n",
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aspace, store, *vaddr, offset, size, addr_type, wiring, lock, _region, region_name));
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region = _vm_create_region_struct(aspace, region_name, wiring, lock);
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if (!region)
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@ -479,7 +488,7 @@ vm_create_anonymous_region(aspace_id aid, const char *name, void **address,
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vm_address_space *aspace;
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vm_cache_ref *cache_ref;
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dprintf("create_anonymous_region: %s: size 0x%lx\n", name, size);
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TRACE(("create_anonymous_region: %s: size 0x%lx\n", name, size));
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/* check parameters */
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if (addr_type != REGION_ADDR_ANY_ADDRESS && addr_type != REGION_ADDR_EXACT_ADDRESS)
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@ -932,7 +941,7 @@ _vm_delete_region(vm_address_space *aspace, region_id rid)
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{
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vm_region *region;
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dprintf("vm_delete_region: aspace id 0x%lx, region id 0x%lx\n", aspace->id, rid);
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TRACE(("vm_delete_region: aspace id 0x%lx, region id 0x%lx\n", aspace->id, rid));
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region = vm_get_region_by_id(rid);
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if (region == NULL)
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@ -1087,7 +1096,9 @@ int vm_get_page_mapping(aspace_id aid, addr vaddr, addr *paddr)
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return err;
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}
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static int display_mem(int argc, char **argv)
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static int
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display_mem(int argc, char **argv)
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{
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int item_size;
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int display_width;
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@ -1096,7 +1107,7 @@ static int display_mem(int argc, char **argv)
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int i;
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int j;
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if(argc < 2) {
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if (argc < 2) {
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dprintf("not enough arguments\n");
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return 0;
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}
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@ -1482,7 +1493,7 @@ void vm_put_aspace(vm_address_space *aspace)
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if(!removeit)
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return;
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dprintf("vm_put_aspace: reached zero ref, deleting aspace\n");
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TRACE(("vm_put_aspace: reached zero ref, deleting aspace\n"));
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if(aspace == kernel_aspace)
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panic("vm_put_aspace: tried to delete the kernel aspace!\n");
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@ -1509,7 +1520,7 @@ aspace_id vm_create_aspace(const char *name, addr base, addr size, bool kernel)
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if(aspace == NULL)
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return ENOMEM;
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dprintf("vm_create_aspace: %s: %lx bytes starting at 0x%lx => %p\n", name, size, base, aspace);
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TRACE(("vm_create_aspace: %s: %lx bytes starting at 0x%lx => %p\n", name, size, base, aspace));
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aspace->name = (char *)malloc(strlen(name) + 1);
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if(aspace->name == NULL ) {
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@ -1553,7 +1564,9 @@ aspace_id vm_create_aspace(const char *name, addr base, addr size, bool kernel)
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return aspace->id;
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}
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int vm_delete_aspace(aspace_id aid)
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int
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vm_delete_aspace(aspace_id aid)
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{
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vm_region *region;
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vm_region *next;
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@ -1563,7 +1576,7 @@ int vm_delete_aspace(aspace_id aid)
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if(aspace == NULL)
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return ERR_VM_INVALID_ASPACE;
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dprintf("vm_delete_aspace: called on aspace 0x%lx\n", aid);
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TRACE(("vm_delete_aspace: called on aspace 0x%lx\n", aid));
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// put this aspace in the deletion state
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// this guarantees that no one else will add regions to the list
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@ -1668,13 +1681,15 @@ vm_thread_dump_max_commit(void *unused)
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for(;;) {
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snooze(1000000);
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if(oldmax != max_commit)
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dprintf("max_commit 0x%x\n", max_commit);
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if (oldmax != max_commit)
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TRACE(("max_commit 0x%x\n", max_commit));
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oldmax = max_commit;
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}
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}
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int vm_init(kernel_args *ka)
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int
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vm_init(kernel_args *ka)
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{
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int err = 0;
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unsigned int i;
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@ -1683,7 +1698,7 @@ int vm_init(kernel_args *ka)
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addr heap_base;
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void *null_addr;
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dprintf("vm_init: entry\n");
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TRACE(("vm_init: entry\n"));
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err = vm_translation_map_module_init(ka);
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err = arch_vm_init(ka);
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@ -1698,7 +1713,7 @@ int vm_init(kernel_args *ka)
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// map in the new heap and initialize it
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heap_base = vm_alloc_from_ka_struct(ka, HEAP_SIZE, LOCK_KERNEL|LOCK_RW);
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dprintf("heap at 0x%lx\n", heap_base);
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TRACE(("heap at 0x%lx\n", heap_base));
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heap_init(heap_base);
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// initialize the free page list and physical page mapper
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@ -1781,12 +1796,14 @@ int vm_init(kernel_args *ka)
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add_debugger_command("ds", &display_mem, "dump memory shorts (16-bit)");
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add_debugger_command("db", &display_mem, "dump memory bytes (8-bit)");
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dprintf("vm_init: exit\n");
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TRACE(("vm_init: exit\n"));
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return err;
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}
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int vm_init_postsem(kernel_args *ka)
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int
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vm_init_postsem(kernel_args *ka)
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{
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vm_region *region;
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@ -1852,9 +1869,9 @@ int vm_page_fault(addr address, addr fault_address, bool is_write, bool is_user,
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*newip = 0;
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err = vm_soft_fault(address, is_write, is_user);
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if(err < 0) {
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dprintf("vm_page_fault: vm_soft_fault returned error %d on fault at 0x%lx, ip 0x%lx, write %d, user %d, thread 0x%lx\n",
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err, address, fault_address, is_write, is_user, thread_get_current_thread_id());
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if (err < 0) {
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TRACE(("vm_page_fault: vm_soft_fault returned error %d on fault at 0x%lx, ip 0x%lx, write %d, user %d, thread 0x%lx\n",
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err, address, fault_address, is_write, is_user, thread_get_current_thread_id()));
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if(!is_user) {
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struct thread *t = thread_get_current_thread();
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if(t && t->fault_handler != 0) {
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@ -1876,15 +1893,9 @@ int vm_page_fault(addr address, addr fault_address, bool is_write, bool is_user,
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return B_HANDLED_INTERRUPT;
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}
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#define TRACE_PFAULT 0
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#if TRACE_PFAULT
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#define TRACE dprintf("in pfault at line %d\n", __LINE__)
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#else
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#define TRACE
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#endif
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static int vm_soft_fault(addr address, bool is_write, bool is_user)
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static int
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vm_soft_fault(addr address, bool is_write, bool is_user)
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{
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vm_address_space *aspace;
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vm_virtual_map *map;
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@ -1947,7 +1958,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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return ERR_VM_PF_BAD_PERM; // BAD_PERMISSION
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}
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TRACE;
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TRACEPFAULT;
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top_cache_ref = region->cache_ref;
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cache_offset = address - region->base + region->cache_offset;
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@ -1963,7 +1974,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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return err;
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}
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TRACE;
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TRACEPFAULT;
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dummy_page.state = PAGE_STATE_INACTIVE;
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dummy_page.type = PAGE_TYPE_DUMMY;
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@ -1972,7 +1983,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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for(cache_ref = top_cache_ref; cache_ref; cache_ref = (cache_ref->cache->source) ? cache_ref->cache->source->ref : NULL) {
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mutex_lock(&cache_ref->lock);
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TRACE;
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TRACEPFAULT;
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for(;;) {
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page = vm_cache_lookup_page(cache_ref, cache_offset);
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@ -1985,7 +1996,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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if(page == NULL)
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break;
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TRACE;
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TRACEPFAULT;
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// page must be busy
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mutex_unlock(&cache_ref->lock);
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@ -1993,12 +2004,12 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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mutex_lock(&cache_ref->lock);
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}
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TRACE;
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TRACEPFAULT;
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if(page != NULL)
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if (page != NULL)
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break;
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TRACE;
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TRACEPFAULT;
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// insert this dummy page here to keep other threads from faulting on the
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// same address and chasing us up the cache chain
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@ -2012,7 +2023,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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if(cache_ref->cache->store->ops->has_page(cache_ref->cache->store, cache_offset)) {
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IOVECS(vecs, 1);
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TRACE;
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TRACEPFAULT;
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mutex_unlock(&cache_ref->lock);
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@ -2039,10 +2050,10 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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}
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mutex_unlock(&cache_ref->lock);
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last_cache_ref = cache_ref;
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TRACE;
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TRACEPFAULT;
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}
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TRACE;
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TRACEPFAULT;
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// we rolled off the end of the cache chain, so we need to decide which
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// cache will get the new page we're about to create
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@ -2053,7 +2064,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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cache_ref = top_cache_ref; // put it in the topmost cache
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}
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TRACE;
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TRACEPFAULT;
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if(page == NULL) {
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// still haven't found a page, so zero out a new one
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@ -2075,7 +2086,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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}
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}
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TRACE;
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TRACEPFAULT;
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if(page->cache_ref != top_cache_ref && is_write) {
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// now we have a page that has the data we want, but in the wrong cache object
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@ -2121,7 +2132,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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}
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}
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TRACE;
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TRACEPFAULT;
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err = 0;
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acquire_sem_etc(map->sem, READ_COUNT, 0, 0);
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@ -2136,7 +2147,7 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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}
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}
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TRACE;
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TRACEPFAULT;
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if (err == 0) {
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int new_lock = region->lock;
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@ -2150,11 +2161,11 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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(*aspace->translation_map.ops->unlock)(&aspace->translation_map);
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}
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TRACE;
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TRACEPFAULT;
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release_sem_etc(map->sem, READ_COUNT, 0);
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TRACE;
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TRACEPFAULT;
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if(dummy_page.state == PAGE_STATE_BUSY) {
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vm_cache_ref *temp_cache = dummy_page.cache_ref;
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@ -2164,19 +2175,21 @@ static int vm_soft_fault(addr address, bool is_write, bool is_user)
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dummy_page.state = PAGE_STATE_INACTIVE;
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}
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TRACE;
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TRACEPFAULT;
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vm_page_set_state(page, PAGE_STATE_ACTIVE);
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vm_cache_release_ref(top_cache_ref);
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vm_put_aspace(aspace);
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TRACE;
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TRACEPFAULT;
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return err;
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}
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static vm_region *vm_virtual_map_lookup(vm_virtual_map *map, addr address)
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static vm_region *
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vm_virtual_map_lookup(vm_virtual_map *map, addr address)
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{
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vm_region *region;
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