The DRM hashtable code is only used by internal functions for legacy UMS drivers. Move the implementation behind CONFIG_DRM_LEGACY and the declarations into legacy header files. Unexport the symbols.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/Makefile | 6 +-- drivers/gpu/drm/drm_hashtab.c | 10 +---- drivers/gpu/drm/drm_legacy.h | 40 +++++++++++++++++- include/drm/drm_device.h | 5 +-- include/drm/drm_hashtab.h | 79 ----------------------------------- include/drm/drm_legacy.h | 15 ++++++- 6 files changed, 59 insertions(+), 96 deletions(-) delete mode 100644 include/drm/drm_hashtab.h
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 1c41156deb5f..bc5f0db63cba 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -6,7 +6,7 @@ drm-y := drm_aperture.o drm_auth.o drm_cache.o \ drm_file.o drm_gem.o drm_ioctl.o \ drm_drv.o \ - drm_sysfs.o drm_hashtab.o drm_mm.o \ + drm_sysfs.o drm_mm.o \ drm_crtc.o drm_fourcc.o drm_modes.o drm_edid.o drm_displayid.o \ drm_trace_points.o drm_prime.o \ drm_vma_manager.o \ @@ -20,8 +20,8 @@ drm-y := drm_aperture.o drm_auth.o drm_cache.o \ drm_managed.o drm_vblank_work.o
drm-$(CONFIG_DRM_LEGACY) += drm_agpsupport.o drm_bufs.o drm_context.o drm_dma.o \ - drm_irq.o drm_legacy_misc.o drm_lock.o drm_memory.o \ - drm_scatter.o drm_vm.o + drm_hashtab.o drm_irq.o drm_legacy_misc.o drm_lock.o \ + drm_memory.o drm_scatter.o drm_vm.o drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o drm-$(CONFIG_COMPAT) += drm_ioc32.o drm-$(CONFIG_DRM_PANEL) += drm_panel.o diff --git a/drivers/gpu/drm/drm_hashtab.c b/drivers/gpu/drm/drm_hashtab.c index c50fa6f0709f..60afa1865559 100644 --- a/drivers/gpu/drm/drm_hashtab.c +++ b/drivers/gpu/drm/drm_hashtab.c @@ -32,16 +32,16 @@ * Thomas Hellström <thomas-at-tungstengraphics-dot-com> */
-#include <linux/export.h> #include <linux/hash.h> #include <linux/mm.h> #include <linux/rculist.h> #include <linux/slab.h> #include <linux/vmalloc.h>
-#include <drm/drm_hashtab.h> #include <drm/drm_print.h>
+#include "drm_legacy.h" + int drm_ht_create(struct drm_open_hash *ht, unsigned int order) { unsigned int size = 1 << order; @@ -58,7 +58,6 @@ int drm_ht_create(struct drm_open_hash *ht, unsigned int order) } return 0; } -EXPORT_SYMBOL(drm_ht_create);
void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key) { @@ -135,7 +134,6 @@ int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item) } return 0; } -EXPORT_SYMBOL(drm_ht_insert_item);
/* * Just insert an item and return any "bits" bit key that hasn't been @@ -164,7 +162,6 @@ int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *it } return 0; } -EXPORT_SYMBOL(drm_ht_just_insert_please);
int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item) @@ -178,7 +175,6 @@ int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, *item = hlist_entry(list, struct drm_hash_item, head); return 0; } -EXPORT_SYMBOL(drm_ht_find_item);
int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key) { @@ -197,7 +193,6 @@ int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item) hlist_del_init_rcu(&item->head); return 0; } -EXPORT_SYMBOL(drm_ht_remove_item);
void drm_ht_remove(struct drm_open_hash *ht) { @@ -206,4 +201,3 @@ void drm_ht_remove(struct drm_open_hash *ht) ht->table = NULL; } } -EXPORT_SYMBOL(drm_ht_remove); diff --git a/drivers/gpu/drm/drm_legacy.h b/drivers/gpu/drm/drm_legacy.h index c9206840c87f..70c9dba114a6 100644 --- a/drivers/gpu/drm/drm_legacy.h +++ b/drivers/gpu/drm/drm_legacy.h @@ -35,9 +35,47 @@ #include <drm/drm_legacy.h>
struct agp_memory; +struct drm_buf_desc; struct drm_device; struct drm_file; -struct drm_buf_desc; +struct drm_hash_item; +struct drm_open_hash; + +/* + * Hash-table Support + */ + +#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) + +/* drm_hashtab.c */ +#if IS_ENABLED(CONFIG_DRM_LEGACY) +int drm_ht_create(struct drm_open_hash *ht, unsigned int order); +int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); +int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, + unsigned long seed, int bits, int shift, + unsigned long add); +int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); + +void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); +int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); +int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); +void drm_ht_remove(struct drm_open_hash *ht); +#endif + +/* + * RCU-safe interface + * + * The user of this API needs to make sure that two or more instances of the + * hash table manipulation functions are never run simultaneously. + * The lookup function drm_ht_find_item_rcu may, however, run simultaneously + * with any of the manipulation functions as long as it's called from within + * an RCU read-locked section. + */ +#define drm_ht_insert_item_rcu drm_ht_insert_item +#define drm_ht_just_insert_please_rcu drm_ht_just_insert_please +#define drm_ht_remove_key_rcu drm_ht_remove_key +#define drm_ht_remove_item_rcu drm_ht_remove_item +#define drm_ht_find_item_rcu drm_ht_find_item
/* * Generic DRM Contexts diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index 604b1d1b2d72..9923c7a6885e 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -6,16 +6,13 @@ #include <linux/mutex.h> #include <linux/idr.h>
-#include <drm/drm_hashtab.h> +#include <drm/drm_legacy.h> #include <drm/drm_mode_config.h>
struct drm_driver; struct drm_minor; struct drm_master; -struct drm_device_dma; struct drm_vblank_crtc; -struct drm_sg_mem; -struct drm_local_map; struct drm_vma_offset_manager; struct drm_vram_mm; struct drm_fb_helper; diff --git a/include/drm/drm_hashtab.h b/include/drm/drm_hashtab.h deleted file mode 100644 index bb95ff011baf..000000000000 --- a/include/drm/drm_hashtab.h +++ /dev/null @@ -1,79 +0,0 @@ -/************************************************************************** - * - * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE - * USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * - **************************************************************************/ -/* - * Simple open hash tab implementation. - * - * Authors: - * Thomas Hellström <thomas-at-tungstengraphics-dot-com> - */ - -#ifndef DRM_HASHTAB_H -#define DRM_HASHTAB_H - -#include <linux/list.h> - -#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) - -struct drm_hash_item { - struct hlist_node head; - unsigned long key; -}; - -struct drm_open_hash { - struct hlist_head *table; - u8 order; -}; - -int drm_ht_create(struct drm_open_hash *ht, unsigned int order); -int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); -int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, - unsigned long seed, int bits, int shift, - unsigned long add); -int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); - -void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); -int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); -int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); -void drm_ht_remove(struct drm_open_hash *ht); - -/* - * RCU-safe interface - * - * The user of this API needs to make sure that two or more instances of the - * hash table manipulation functions are never run simultaneously. - * The lookup function drm_ht_find_item_rcu may, however, run simultaneously - * with any of the manipulation functions as long as it's called from within - * an RCU read-locked section. - */ -#define drm_ht_insert_item_rcu drm_ht_insert_item -#define drm_ht_just_insert_please_rcu drm_ht_just_insert_please -#define drm_ht_remove_key_rcu drm_ht_remove_key -#define drm_ht_remove_item_rcu drm_ht_remove_item -#define drm_ht_find_item_rcu drm_ht_find_item - -#endif diff --git a/include/drm/drm_legacy.h b/include/drm/drm_legacy.h index 58dc8d8cc907..0fc85418aad8 100644 --- a/include/drm/drm_legacy.h +++ b/include/drm/drm_legacy.h @@ -37,7 +37,6 @@
#include <drm/drm.h> #include <drm/drm_auth.h> -#include <drm/drm_hashtab.h>
struct drm_device; struct drm_driver; @@ -51,6 +50,20 @@ struct pci_driver; * you're doing it terribly wrong. */
+/* + * Hash-table Support + */ + +struct drm_hash_item { + struct hlist_node head; + unsigned long key; +}; + +struct drm_open_hash { + struct hlist_head *table; + u8 order; +}; + /** * DMA buffer. */