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Commit 81fcfb81 authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Benjamin Herrenschmidt
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hashtable: add hash_for_each_possible_rcu_notrace() 



This adds hash_for_each_possible_rcu_notrace() which is basically
a notrace clone of hash_for_each_possible_rcu() which cannot be
used in real mode due to its tracing/debugging capability.

Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8b5ede69

include/linux/hashtable.h

+15 −0
Original line number Diff line number Diff line
@@ -173,6 +173,21 @@ static inline void hash_del_rcu(struct hlist_node *node) 
	hlist_for_each_entry_rcu(obj, &name[hash_min(key, HASH_BITS(name))],\

		member)



/**

 * hash_for_each_possible_rcu_notrace - iterate over all possible objects hashing

 * to the same bucket in an rcu enabled hashtable in a rcu enabled hashtable

 * @name: hashtable to iterate

 * @obj: the type * to use as a loop cursor for each entry

 * @member: the name of the hlist_node within the struct

 * @key: the key of the objects to iterate over

 *

 * This is the same as hash_for_each_possible_rcu() except that it does

 * not do any RCU debugging or tracing.

 */

#define hash_for_each_possible_rcu_notrace(name, obj, member, key) \

	hlist_for_each_entry_rcu_notrace(obj, \

		&name[hash_min(key, HASH_BITS(name))], member)



/**

 * hash_for_each_possible_safe - iterate over all possible objects hashing to the

 * same bucket safe against removals