/************************************************************************** * * 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 */ #ifndef DRM_HASHTAB_H #define DRM_HASHTAB_H #include #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; }; extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order); extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); extern 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); extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); extern 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 ols/perf/pmu-events/jevents.c

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