/**************************************************************************
 *
 * 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;
};

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
='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Alexey Dobriyan &lt;adobriyan@gmail.com&gt;</td><td class='right'>2016-12-12 16:45:08 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-12 18:55:09 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=623f594e7d20e4b5dac50aba5bd23822f2a95d6f'>623f594e7d20e4b5dac50aba5bd23822f2a95d6f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=623f594e7d20e4b5dac50aba5bd23822f2a95d6f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=623f594e7d20e4b5dac50aba5bd23822f2a95d6f'>92139bd591d7cecad01154d2cd2c101bcbff5a5a</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=af884cd4a5ae62fcf5e321fecf0ec1014730353d'>af884cd4a5ae62fcf5e321fecf0ec1014730353d</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=623f594e7d20e4b5dac50aba5bd23822f2a95d6f&amp;id2=af884cd4a5ae62fcf5e321fecf0ec1014730353d'>diff</a>)</td></tr></table>
<div class='commit-subject'>proc: make struct pid_entry::len unsigned</div><div class='commit-msg'>"unsigned int" is better on x86_64 because it most of the time it
autoexpands to 64-bit value while "int" requires MOVSX instruction.

Link: http://lkml.kernel.org/r/20161029160810.GF1246@avx2
Signed-off-by: Alexey Dobriyan &lt;adobriyan@gmail.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=623f594e7d20e4b5dac50aba5bd23822f2a95d6f'>Diffstat</a></div><table summary='diffstat' class='diffstat'>