diff options
| -rw-r--r-- | linux-core/drmP.h | 7 | ||||
| -rw-r--r-- | linux-core/drm_compat.c | 123 | ||||
| -rw-r--r-- | linux-core/drm_compat.h | 9 | ||||
| -rw-r--r-- | linux-core/drm_context.c | 56 | ||||
| -rw-r--r-- | linux-core/drm_drawable.c | 19 | ||||
| -rw-r--r-- | linux-core/drm_drv.c | 12 | ||||
| -rw-r--r-- | linux-core/drm_stub.c | 1 |
7 files changed, 176 insertions, 51 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h index 94cb4eee..dd3a69df 100644 --- a/linux-core/drmP.h +++ b/linux-core/drmP.h @@ -571,8 +571,6 @@ typedef struct drm_ctx_list { } drm_ctx_list_t; struct drm_ctx_sarea_list { - struct list_head head; - int ctx_id; drm_map_t *map; }; @@ -601,8 +599,6 @@ typedef struct ati_pcigart_info { } drm_ati_pcigart_info; struct drm_drawable_list { - struct list_head head; - int id; drm_drawable_info_t info; }; @@ -753,7 +749,6 @@ typedef struct drm_device { struct mutex ctxlist_mutex; /**< For ctxlist */ struct idr ctx_idr; - struct list_head context_sarealist; struct list_head vmalist; /**< List of vmas (for debugging) */ drm_lock_data_t lock; /**< Information on hardware lock */ @@ -830,7 +825,6 @@ typedef struct drm_device { /*@{ */ spinlock_t drw_lock; struct idr drw_idr; - struct list_head drwlist; /*@} */ } drm_device_t; @@ -1008,6 +1002,7 @@ extern int drm_update_drawable_info(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); extern drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id); +extern void drm_drawable_free_all(drm_device_t *dev); /* Authentication IOCTL support (drm_auth.h) */ extern int drm_getmagic(struct inode *inode, struct file *filp, diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c index 9ac5658c..08d20d06 100644 --- a/linux-core/drm_compat.c +++ b/linux-core/drm_compat.c @@ -555,3 +555,126 @@ void drm_bo_finish_unmap(drm_buffer_object_t *bo) #endif +#ifdef DRM_IDR_COMPAT_FN +/* only called when idp->lock is held */ +static void __free_layer(struct idr *idp, struct idr_layer *p) +{ + p->ary[0] = idp->id_free; + idp->id_free = p; + idp->id_free_cnt++; +} + +static void free_layer(struct idr *idp, struct idr_layer *p) +{ + unsigned long flags; + + /* + * Depends on the return element being zeroed. + */ + spin_lock_irqsave(&idp->lock, flags); + __free_layer(idp, p); + spin_unlock_irqrestore(&idp->lock, flags); +} + +/** + * idr_for_each - iterate through all stored pointers + * @idp: idr handle + * @fn: function to be called for each pointer + * @data: data passed back to callback function + * + * Iterate over the pointers registered with the given idr. The + * callback function will be called for each pointer currently + * registered, passing the id, the pointer and the data pointer passed + * to this function. It is not safe to modify the idr tree while in + * the callback, so functions such as idr_get_new and idr_remove are + * not allowed. + * + * We check the return of @fn each time. If it returns anything other + * than 0, we break out and return that value. + * +* The caller must serialize idr_find() vs idr_get_new() and idr_remove(). + */ +int idr_for_each(struct idr *idp, + int (*fn)(int id, void *p, void *data), void *data) +{ + int n, id, max, error = 0; + struct idr_layer *p; + struct idr_layer *pa[MAX_LEVEL]; + struct idr_layer **paa = &pa[0]; + + n = idp->layers * IDR_BITS; + p = idp->top; + max = 1 << n; + + id = 0; + while (id < max) { + while (n > 0 && p) { + n -= IDR_BITS; + *paa++ = p; + p = p->ary[(id >> n) & IDR_MASK]; + } + + if (p) { + error = fn(id, (void *)p, data); + if (error) + break; + } + + id += 1 << n; + while (n < fls(id)) { + n += IDR_BITS; + p = *--paa; + } + } + + return error; +} +EXPORT_SYMBOL(idr_for_each); + +/** + * idr_remove_all - remove all ids from the given idr tree + * @idp: idr handle + * + * idr_destroy() only frees up unused, cached idp_layers, but this + * function will remove all id mappings and leave all idp_layers + * unused. + * + * A typical clean-up sequence for objects stored in an idr tree, will + * use idr_for_each() to free all objects, if necessay, then + * idr_remove_all() to remove all ids, and idr_destroy() to free + * up the cached idr_layers. + */ +void idr_remove_all(struct idr *idp) +{ + int n, id, max, error = 0; + struct idr_layer *p; + struct idr_layer *pa[MAX_LEVEL]; + struct idr_layer **paa = &pa[0]; + + n = idp->layers * IDR_BITS; + p = idp->top; + max = 1 << n; + + id = 0; + while (id < max && !error) { + while (n > IDR_BITS && p) { + n -= IDR_BITS; + *paa++ = p; + p = p->ary[(id >> n) & IDR_MASK]; + } + + id += 1 << n; + while (n < fls(id)) { + if (p) { + memset(p, 0, sizeof *p); + free_layer(idp, p); + } + n += IDR_BITS; + p = *--paa; + } + } + idp->top = NULL; + idp->layers = 0; +} +EXPORT_SYMBOL(idr_remove_all); +#endif diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h index bc5fadc5..024059ac 100644 --- a/linux-core/drm_compat.h +++ b/linux-core/drm_compat.h @@ -305,4 +305,13 @@ extern int drm_bo_remap_bound(struct drm_buffer_object *bo); extern int drm_bo_map_bound(struct vm_area_struct *vma); #endif + +/* fixme when functions are upstreamed */ +#define DRM_IDR_COMPAT_FN +#ifdef DRM_IDR_COMPAT_FN +int idr_for_each(struct idr *idp, + int (*fn)(int id, void *p, void *data), void *data); +void idr_remove_all(struct idr *idp); +#endif + #endif diff --git a/linux-core/drm_context.c b/linux-core/drm_context.c index 5cb79b14..101a298c 100644 --- a/linux-core/drm_context.c +++ b/linux-core/drm_context.c @@ -53,19 +53,18 @@ * \param ctx_handle context handle. * * Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry - * in drm_device::context_sareas, while holding the drm_device::struct_mutex + * in drm_device::ctx_idr, while holding the drm_device::struct_mutex * lock. */ void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle) { - struct drm_ctx_sarea_list *ctx_sarea; + struct drm_ctx_sarea_list *ctx; mutex_lock(&dev->struct_mutex); - ctx_sarea = idr_find(&dev->ctx_idr, ctx_handle); - if (ctx_sarea) { + ctx = idr_find(&dev->ctx_idr, ctx_handle); + if (ctx) { idr_remove(&dev->ctx_idr, ctx_handle); - list_del(&ctx_sarea->head); - drm_free(ctx_sarea, sizeof(struct drm_ctx_sarea_list), DRM_MEM_BUFS); + drm_free(ctx, sizeof(struct drm_ctx_sarea_list), DRM_MEM_CTXLIST); } else DRM_ERROR("Attempt to free invalid context handle: %d\n", ctx_handle); mutex_unlock(&dev->struct_mutex); @@ -78,8 +77,7 @@ void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle) * \param dev DRM device. * \return (non-negative) context handle on success or a negative number on failure. * - * Find the first zero bit in drm_device::ctx_bitmap and (re)allocates - * drm_device::context_sareas to accommodate the new entry while holding the + * Allocate a new idr from drm_device::ctx_idr while holding the * drm_device::struct_mutex lock. */ static int drm_ctxbitmap_next(drm_device_t * dev) @@ -88,14 +86,14 @@ static int drm_ctxbitmap_next(drm_device_t * dev) int ret; struct drm_ctx_sarea_list *new_ctx; - new_ctx = drm_calloc(1, sizeof(struct drm_ctx_sarea_list), DRM_MEM_BUFS); + new_ctx = drm_calloc(1, sizeof(struct drm_ctx_sarea_list), DRM_MEM_CTXLIST); if (!new_ctx) return -1; again: if (idr_pre_get(&dev->ctx_idr, GFP_KERNEL) == 0) { DRM_ERROR("Out of memory expanding drawable idr\n"); - drm_free(new_ctx, sizeof(struct drm_ctx_sarea_list), DRM_MEM_BUFS); + drm_free(new_ctx, sizeof(struct drm_ctx_sarea_list), DRM_MEM_CTXLIST); return -ENOMEM; } mutex_lock(&dev->struct_mutex); @@ -106,9 +104,6 @@ again: } mutex_unlock(&dev->struct_mutex); - - new_ctx->ctx_id = new_id; - list_add(&new_ctx->head, &dev->context_sarealist); return new_id; } @@ -117,14 +112,20 @@ again: * * \param dev DRM device. * - * Allocates and initialize drm_device::ctx_bitmap and drm_device::context_sareas, while holding - * the drm_device::struct_mutex lock. + * Initialise the drm_device::ctx_idr */ int drm_ctxbitmap_init(drm_device_t * dev) { idr_init(&dev->ctx_idr); - INIT_LIST_HEAD(&dev->context_sarealist); + return 0; +} + + +static int drm_ctx_sarea_free(int id, void *p, void *data) +{ + struct drm_ctx_sarea_list *ctx_entry = p; + drm_free(ctx_entry, sizeof(struct drm_ctx_sarea_list), DRM_MEM_CTXLIST); return 0; } @@ -133,18 +134,14 @@ int drm_ctxbitmap_init(drm_device_t * dev) * * \param dev DRM device. * - * Frees drm_device::ctx_bitmap and drm_device::context_sareas, while holding - * the drm_device::struct_mutex lock. + * Free all idr members using drm_ctx_sarea_free helper function + * while holding the drm_device::struct_mutex lock. */ void drm_ctxbitmap_cleanup(drm_device_t * dev) { - struct drm_ctx_sarea_list *ctx_entry, *ctx_temp; - mutex_lock(&dev->struct_mutex); - list_for_each_entry_safe(ctx_entry, ctx_temp, &dev->context_sarealist, head) { - idr_remove(&dev->ctx_idr, ctx_entry->ctx_id); - drm_free(ctx_entry, sizeof(struct drm_ctx_sarea_list), DRM_MEM_MAPS); - } + idr_for_each(&dev->ctx_idr, drm_ctx_sarea_free, NULL); + idr_remove_all(&dev->ctx_idr); mutex_unlock(&dev->struct_mutex); } @@ -163,7 +160,7 @@ void drm_ctxbitmap_cleanup(drm_device_t * dev) * \param arg user argument pointing to a drm_ctx_priv_map structure. * \return zero on success or a negative number on failure. * - * Gets the map from drm_device::context_sareas with the handle specified and + * Gets the map from drm_device::ctx_idr with the handle specified and * returns its handle. */ int drm_getsareactx(struct inode *inode, struct file *filp, @@ -187,8 +184,8 @@ int drm_getsareactx(struct inode *inode, struct file *filp, mutex_unlock(&dev->struct_mutex); return -EINVAL; } - map = ctx_sarea->map; + mutex_unlock(&dev->struct_mutex); request.handle = NULL; @@ -217,7 +214,7 @@ int drm_getsareactx(struct inode *inode, struct file *filp, * \return zero on success or a negative number on failure. * * Searches the mapping specified in \p arg and update the entry in - * drm_device::context_sareas with it. + * drm_device::ctx_idr with it. */ int drm_setsareactx(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) @@ -251,10 +248,9 @@ int drm_setsareactx(struct inode *inode, struct file *filp, mutex_lock(&dev->struct_mutex); ctx_sarea = idr_find(&dev->ctx_idr, request.ctx_id); - if (!ctx_sarea) { + if (!ctx_sarea) goto bad; - } - + ctx_sarea->map = map; mutex_unlock(&dev->struct_mutex); return 0; diff --git a/linux-core/drm_drawable.c b/linux-core/drm_drawable.c index d599430b..eb44a189 100644 --- a/linux-core/drm_drawable.c +++ b/linux-core/drm_drawable.c @@ -67,11 +67,8 @@ again: goto again; } - list_add(&draw_info->head, &dev->drwlist); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - draw_info->id = new_id; draw.handle = new_id; DRM_DEBUG("%d\n", draw.handle); @@ -102,7 +99,6 @@ int drm_rmdraw(DRM_IOCTL_ARGS) spin_lock_irqsave(&dev->drw_lock, irqflags); - list_del(&draw_info->head); idr_remove(&dev->drw_idr, draw.handle); drm_free(draw_info, sizeof(struct drm_drawable_list), DRM_MEM_BUFS); @@ -199,3 +195,18 @@ drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) return &draw_info->info; } EXPORT_SYMBOL(drm_get_drawable_info); + +static int drm_drawable_free(int idr, void *p, void *data) +{ + struct drm_drawable_list *drw_entry = p; + drm_free(drw_entry->info.rects, drw_entry->info.num_rects * + sizeof(drm_clip_rect_t), DRM_MEM_BUFS); + drm_free(drw_entry, sizeof(struct drm_drawable_list), DRM_MEM_BUFS); + return 0; +} + +void drm_drawable_free_all(drm_device_t *dev) +{ + idr_for_each(&dev->drw_idr, drm_drawable_free, NULL); + idr_remove_all(&dev->drw_idr); +} diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c index 1695a792..d5eb9713 100644 --- a/linux-core/drm_drv.c +++ b/linux-core/drm_drv.c @@ -142,7 +142,6 @@ int drm_lastclose(drm_device_t * dev) drm_magic_entry_t *pt, *next; drm_map_list_t *r_list, *list_t; drm_vma_entry_t *vma, *vma_temp; - struct drm_drawable_list *drw_entry, *drw_temp; int i; DRM_DEBUG("\n"); @@ -167,16 +166,9 @@ int drm_lastclose(drm_device_t * dev) drm_irq_uninstall(dev); /* Free drawable information memory */ - list_for_each_entry_safe(drw_entry, drw_temp, &dev->drwlist, head) { - drm_free(drw_entry->info.rects, drw_entry->info.num_rects * - sizeof(drm_clip_rect_t), DRM_MEM_BUFS); - - idr_remove(&dev->drw_idr, drw_entry->id); - list_del(&drw_entry->head); - drm_free(drw_entry, sizeof(struct drm_drawable_list), DRM_MEM_BUFS); - } - mutex_lock(&dev->struct_mutex); + + drm_drawable_free_all(dev); del_timer(&dev->timer); if (dev->unique) { diff --git a/linux-core/drm_stub.c b/linux-core/drm_stub.c index 7b0a0f97..f57ed9cc 100644 --- a/linux-core/drm_stub.c +++ b/linux-core/drm_stub.c @@ -60,7 +60,6 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, { int retcode; - INIT_LIST_HEAD(&dev->drwlist); INIT_LIST_HEAD(&dev->filelist); INIT_LIST_HEAD(&dev->ctxlist); INIT_LIST_HEAD(&dev->vmalist); |