yaffs: Refactor bit counting code
[yaffs2.git] / yaffs_allocator.c
index 024ee2af0185e391ac09e5bab8950180eca42376..b9fe31e70d475840e8c613d8eb2a2fa29663913e 100644 (file)
@@ -11,8 +11,6 @@
  * published by the Free Software Foundation.
  */
 
-
-
 #include "yaffs_allocator.h"
 #include "yaffs_guts.h"
 #include "yaffs_trace.h"
 
 #ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR
 
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev)
 {
        dev = dev;
 }
 
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev)
 {
        dev = dev;
 }
 
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
 {
-       return (yaffs_tnode_t *)YMALLOC(dev->tnode_size);
+       return (struct yaffs_tnode *)YMALLOC(dev->tnode_size);
 }
 
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
 {
        dev = dev;
        YFREE(tn);
 }
 
-void yaffs_init_raw_objs(yaffs_dev_t *dev)
+void yaffs_init_raw_objs(struct yaffs_dev *dev)
 {
        dev = dev;
 }
 
-void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
+void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
 {
        dev = dev;
 }
 
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
 {
        dev = dev;
-       return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t));
+       return (struct yaffs_obj *)YMALLOC(sizeof(struct yaffs_obj));
 }
 
-
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
 {
 
        dev = dev;
@@ -69,85 +66,80 @@ void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
 
 struct yaffs_tnode_list {
        struct yaffs_tnode_list *next;
-       yaffs_tnode_t *tnodes;
+       struct yaffs_tnode *tnodes;
 };
 
-typedef struct yaffs_tnode_list yaffs_tnodelist_t;
-
-struct yaffs_obj_list_struct {
-       yaffs_obj_t *objects;
-       struct yaffs_obj_list_struct *next;
+struct yaffs_obj_list {
+       struct yaffs_obj_list *next;
+       struct yaffs_obj *objects;
 };
 
-typedef struct yaffs_obj_list_struct yaffs_obj_list;
+struct yaffs_allocator {
+       int n_tnodes_created;
+       struct yaffs_tnode *free_tnodes;
+       int n_free_tnodes;
+       struct yaffs_tnode_list *alloc_tnode_list;
 
+       int n_obj_created;
+       struct yaffs_obj *free_objs;
+       int n_free_objects;
 
-struct yaffs_AllocatorStruct {
-       int n_tnodesCreated;
-       yaffs_tnode_t *freeTnodes;
-       int nFreeTnodes;
-       yaffs_tnodelist_t *allocatedTnodeList;
-
-       int n_objCreated;
-       yaffs_obj_t *freeObjects;
-       int nFreeObjects;
-
-       yaffs_obj_list *allocated_list;
+       struct yaffs_obj_list *allocated_obj_list;
 };
 
-typedef struct yaffs_AllocatorStruct yaffs_Allocator;
-
-
-static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev)
+static void yaffs_deinit_raw_tnodes(struct yaffs_dev *dev)
 {
 
-       yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+       struct yaffs_allocator *allocator =
+           (struct yaffs_allocator *)dev->allocator;
 
-       yaffs_tnodelist_t *tmp;
+       struct yaffs_tnode_list *tmp;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return;
        }
 
-       while (allocator->allocatedTnodeList) {
-               tmp = allocator->allocatedTnodeList->next;
+       while (allocator->alloc_tnode_list) {
+               tmp = allocator->alloc_tnode_list->next;
 
-               YFREE(allocator->allocatedTnodeList->tnodes);
-               YFREE(allocator->allocatedTnodeList);
-               allocator->allocatedTnodeList = tmp;
+               YFREE(allocator->alloc_tnode_list->tnodes);
+               YFREE(allocator->alloc_tnode_list);
+               allocator->alloc_tnode_list = tmp;
 
        }
 
-       allocator->freeTnodes = NULL;
-       allocator->nFreeTnodes = 0;
-       allocator->n_tnodesCreated = 0;
+       allocator->free_tnodes = NULL;
+       allocator->n_free_tnodes = 0;
+       allocator->n_tnodes_created = 0;
 }
 
-static void yaffs_init_raw_tnodes(yaffs_dev_t *dev)
+static void yaffs_init_raw_tnodes(struct yaffs_dev *dev)
 {
-       yaffs_Allocator *allocator = dev->allocator;
-
-       if(allocator){
-               allocator->allocatedTnodeList = NULL;
-               allocator->freeTnodes = NULL;
-               allocator->nFreeTnodes = 0;
-               allocator->n_tnodesCreated = 0;
-       } else
+       struct yaffs_allocator *allocator = dev->allocator;
+
+       if (allocator) {
+               allocator->alloc_tnode_list = NULL;
+               allocator->free_tnodes = NULL;
+               allocator->n_free_tnodes = 0;
+               allocator->n_tnodes_created = 0;
+       } else {
                YBUG();
+       }
 }
 
-static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
+static int yaffs_create_tnodes(struct yaffs_dev *dev, int n_tnodes)
 {
-       yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+       struct yaffs_allocator *allocator =
+           (struct yaffs_allocator *)dev->allocator;
        int i;
-       yaffs_tnode_t *newTnodes;
-       __u8 *mem;
-       yaffs_tnode_t *curr;
-       yaffs_tnode_t *next;
-       yaffs_tnodelist_t *tnl;
+       struct yaffs_tnode *new_tnodes;
+       u8 *mem;
+       struct yaffs_tnode *curr;
+       struct yaffs_tnode *next;
+       struct yaffs_tnode_list *tnl;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return YAFFS_FAIL;
        }
@@ -155,47 +147,46 @@ static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
        if (n_tnodes < 1)
                return YAFFS_OK;
 
-
        /* make these things */
 
-       newTnodes = YMALLOC(n_tnodes * dev->tnode_size);
-       mem = (__u8 *)newTnodes;
+       new_tnodes = YMALLOC(n_tnodes * dev->tnode_size);
+       mem = (u8 *) new_tnodes;
 
-       if (!newTnodes) {
+       if (!new_tnodes) {
                T(YAFFS_TRACE_ERROR,
-                       (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+                 (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
                return YAFFS_FAIL;
        }
 
        /* New hookup for wide tnodes */
        for (i = 0; i < n_tnodes - 1; i++) {
-               curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size];
-               next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size];
+               curr = (struct yaffs_tnode *)&mem[i * dev->tnode_size];
+               next = (struct yaffs_tnode *)&mem[(i + 1) * dev->tnode_size];
                curr->internal[0] = next;
        }
 
-       curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size];
-       curr->internal[0] = allocator->freeTnodes;
-       allocator->freeTnodes = (yaffs_tnode_t *)mem;
+       curr = (struct yaffs_tnode *)&mem[(n_tnodes - 1) * dev->tnode_size];
+       curr->internal[0] = allocator->free_tnodes;
+       allocator->free_tnodes = (struct yaffs_tnode *)mem;
 
-       allocator->nFreeTnodes += n_tnodes;
-       allocator->n_tnodesCreated += n_tnodes;
+       allocator->n_free_tnodes += n_tnodes;
+       allocator->n_tnodes_created += n_tnodes;
 
        /* Now add this bunch of tnodes to a list for freeing up.
         * NB If we can't add this to the management list it isn't fatal
         * but it just means we can't free this bunch of tnodes later.
         */
 
-       tnl = YMALLOC(sizeof(yaffs_tnodelist_t));
+       tnl = YMALLOC(sizeof(struct yaffs_tnode_list));
        if (!tnl) {
                T(YAFFS_TRACE_ERROR,
                  (TSTR
                   ("yaffs: Could not add tnodes to management list" TENDSTR)));
-                  return YAFFS_FAIL;
+               return YAFFS_FAIL;
        } else {
-               tnl->tnodes = newTnodes;
-               tnl->next = allocator->allocatedTnodeList;
-               allocator->allocatedTnodeList = tnl;
+               tnl->tnodes = new_tnodes;
+               tnl->next = allocator->alloc_tnode_list;
+               allocator->alloc_tnode_list = tnl;
        }
 
        T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
@@ -203,95 +194,93 @@ static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
        return YAFFS_OK;
 }
 
-
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
 {
-       yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
-       yaffs_tnode_t *tn = NULL;
+       struct yaffs_allocator *allocator =
+           (struct yaffs_allocator *)dev->allocator;
+       struct yaffs_tnode *tn = NULL;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return NULL;
        }
 
        /* If there are none left make more */
-       if (!allocator->freeTnodes)
+       if (!allocator->free_tnodes)
                yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
 
-       if (allocator->freeTnodes) {
-               tn = allocator->freeTnodes;
-               allocator->freeTnodes = allocator->freeTnodes->internal[0];
-               allocator->nFreeTnodes--;
+       if (allocator->free_tnodes) {
+               tn = allocator->free_tnodes;
+               allocator->free_tnodes = allocator->free_tnodes->internal[0];
+               allocator->n_free_tnodes--;
        }
 
        return tn;
 }
 
 /* FreeTnode frees up a tnode and puts it back on the free list */
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
 {
-       yaffs_Allocator *allocator = dev->allocator;
+       struct yaffs_allocator *allocator = dev->allocator;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return;
        }
 
        if (tn) {
-               tn->internal[0] = allocator->freeTnodes;
-               allocator->freeTnodes = tn;
-               allocator->nFreeTnodes++;
+               tn->internal[0] = allocator->free_tnodes;
+               allocator->free_tnodes = tn;
+               allocator->n_free_tnodes++;
        }
-       dev->checkpoint_blocks_required = 0; /* force recalculation*/
+       dev->checkpoint_blocks_required = 0;    /* force recalculation */
 }
 
-
-
-static void yaffs_init_raw_objs(yaffs_dev_t *dev)
+static void yaffs_init_raw_objs(struct yaffs_dev *dev)
 {
-       yaffs_Allocator *allocator = dev->allocator;
+       struct yaffs_allocator *allocator = dev->allocator;
 
-       if(allocator) {
-               allocator->allocated_list = NULL;
-               allocator->freeObjects = NULL;
-               allocator->nFreeObjects = 0;
-       } else
+       if (allocator) {
+               allocator->allocated_obj_list = NULL;
+               allocator->free_objs = NULL;
+               allocator->n_free_objects = 0;
+       } else {
                YBUG();
+       }
 }
 
-static void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
+static void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
 {
-       yaffs_Allocator *allocator = dev->allocator;
-       yaffs_obj_list *tmp;
+       struct yaffs_allocator *allocator = dev->allocator;
+       struct yaffs_obj_list *tmp;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return;
        }
 
-       while (allocator->allocated_list) {
-               tmp = allocator->allocated_list->next;
-               YFREE(allocator->allocated_list->objects);
-               YFREE(allocator->allocated_list);
+       while (allocator->allocated_obj_list) {
+               tmp = allocator->allocated_obj_list->next;
+               YFREE(allocator->allocated_obj_list->objects);
+               YFREE(allocator->allocated_obj_list);
 
-               allocator->allocated_list = tmp;
+               allocator->allocated_obj_list = tmp;
        }
 
-       allocator->freeObjects = NULL;
-       allocator->nFreeObjects = 0;
-       allocator->n_objCreated = 0;
+       allocator->free_objs = NULL;
+       allocator->n_free_objects = 0;
+       allocator->n_obj_created = 0;
 }
 
-
-static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
+static int yaffs_create_free_objs(struct yaffs_dev *dev, int n_obj)
 {
-       yaffs_Allocator *allocator = dev->allocator;
+       struct yaffs_allocator *allocator = dev->allocator;
 
        int i;
-       yaffs_obj_t *newObjects;
-       yaffs_obj_list *list;
+       struct yaffs_obj *new_objs;
+       struct yaffs_obj_list *list;
 
-       if(!allocator){
+       if (!allocator) {
                YBUG();
                return YAFFS_FAIL;
        }
@@ -300,15 +289,15 @@ static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
                return YAFFS_OK;
 
        /* make these things */
-       newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t));
-       list = YMALLOC(sizeof(yaffs_obj_list));
+       new_objs = YMALLOC(n_obj * sizeof(struct yaffs_obj));
+       list = YMALLOC(sizeof(struct yaffs_obj_list));
 
-       if (!newObjects || !list) {
-               if (newObjects){
-                       YFREE(newObjects);
-                       newObjects = NULL;
+       if (!new_objs || !list) {
+               if (new_objs) {
+                       YFREE(new_objs);
+                       new_objs = NULL;
                }
-               if (list){
+               if (list) {
                        YFREE(list);
                        list = NULL;
                }
@@ -319,90 +308,90 @@ static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
 
        /* Hook them into the free list */
        for (i = 0; i < n_obj - 1; i++) {
-               newObjects[i].siblings.next =
-                               (struct ylist_head *)(&newObjects[i + 1]);
+               new_objs[i].siblings.next =
+                   (struct list_head *)(&new_objs[i + 1]);
        }
 
-       newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects;
-       allocator->freeObjects = newObjects;
-       allocator->nFreeObjects += n_obj;
-       allocator->n_objCreated += n_obj;
+       new_objs[n_obj - 1].siblings.next = (void *)allocator->free_objs;
+       allocator->free_objs = new_objs;
+       allocator->n_free_objects += n_obj;
+       allocator->n_obj_created += n_obj;
 
        /* Now add this bunch of Objects to a list for freeing up. */
 
-       list->objects = newObjects;
-       list->next = allocator->allocated_list;
-       allocator->allocated_list = list;
+       list->objects = new_objs;
+       list->next = allocator->allocated_obj_list;
+       allocator->allocated_obj_list = list;
 
        return YAFFS_OK;
 }
 
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
 {
-       yaffs_obj_t *obj = NULL;
-       yaffs_Allocator *allocator = dev->allocator;
+       struct yaffs_obj *obj = NULL;
+       struct yaffs_allocator *allocator = dev->allocator;
 
-       if(!allocator) {
+       if (!allocator) {
                YBUG();
                return obj;
        }
 
        /* If there are none left make more */
-       if (!allocator->freeObjects)
+       if (!allocator->free_objs)
                yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
 
-       if (allocator->freeObjects) {
-               obj = allocator->freeObjects;
-               allocator->freeObjects =
-                       (yaffs_obj_t *) (allocator->freeObjects->siblings.next);
-               allocator->nFreeObjects--;
+       if (allocator->free_objs) {
+               obj = allocator->free_objs;
+               allocator->free_objs =
+                   (struct yaffs_obj *)(allocator->free_objs->siblings.next);
+               allocator->n_free_objects--;
        }
 
        return obj;
 }
 
-
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
 {
 
-       yaffs_Allocator *allocator = dev->allocator;
+       struct yaffs_allocator *allocator = dev->allocator;
 
-       if(!allocator)
+       if (!allocator)
                YBUG();
        else {
                /* Link into the free list. */
-               obj->siblings.next = (struct ylist_head *)(allocator->freeObjects);
-               allocator->freeObjects = obj;
-               allocator->nFreeObjects++;
+               obj->siblings.next = (struct list_head *)(allocator->free_objs);
+               allocator->free_objs = obj;
+               allocator->n_free_objects++;
        }
 }
 
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev)
 {
-       if(dev->allocator){
+       if (dev->allocator) {
                yaffs_deinit_raw_tnodes(dev);
                yaffs_deinit_raw_objs(dev);
 
                YFREE(dev->allocator);
-               dev->allocator=NULL;
-       } else
+               dev->allocator = NULL;
+       } else {
                YBUG();
+       }
 }
 
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev)
 {
-       yaffs_Allocator *allocator;
+       struct yaffs_allocator *allocator;
 
-       if(!dev->allocator){
-               allocator = YMALLOC(sizeof(yaffs_Allocator));
-               if(allocator){
+       if (!dev->allocator) {
+               allocator = YMALLOC(sizeof(struct yaffs_allocator));
+               if (allocator) {
                        dev->allocator = allocator;
                        yaffs_init_raw_tnodes(dev);
                        yaffs_init_raw_objs(dev);
                }
-       } else
+       } else {
                YBUG();
+       }
 }
 
-
 #endif