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55 lines
1.8 KiB
C
Executable File
55 lines
1.8 KiB
C
Executable File
#ifndef __BACKPORT_RCULIST_H
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#define __BACKPORT_RCULIST_H
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
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#include_next <linux/rculist.h>
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0)
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#include <backport/magic.h>
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#define hlist_for_each_entry_rcu4(tpos, pos, head, member) \
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for (pos = rcu_dereference_raw(hlist_first_rcu(head)); \
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pos && \
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({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; });\
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pos = rcu_dereference_raw(hlist_next_rcu(pos)))
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#define hlist_for_each_entry_rcu3(pos, head, member) \
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for (pos = hlist_entry_safe (rcu_dereference_raw(hlist_first_rcu(head)),\
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typeof(*(pos)), member); \
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pos; \
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pos = hlist_entry_safe(rcu_dereference_raw(hlist_next_rcu( \
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&(pos)->member)), typeof(*(pos)), member))
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#undef hlist_for_each_entry_rcu
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#define hlist_for_each_entry_rcu(...) \
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macro_dispatcher(hlist_for_each_entry_rcu, __VA_ARGS__)(__VA_ARGS__)
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#endif /* < 3.9 */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)
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/**
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* backport:
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*
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* commit 67bdbffd696f29a0b68aa8daa285783a06651583
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* Author: Arnd Bergmann <arnd@arndb.de>
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* Date: Thu Feb 25 16:55:13 2010 +0100
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*
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* rculist: avoid __rcu annotations
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*/
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#define hlist_first_rcu(head) (*((struct hlist_node __rcu **)(&(head)->first)))
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#define hlist_next_rcu(node) (*((struct hlist_node __rcu **)(&(node)->next)))
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#endif /* < 2.6.37 */
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#ifndef list_for_each_entry_continue_rcu
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#define list_for_each_entry_continue_rcu(pos, head, member) \
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for (pos = list_entry_rcu(pos->member.next, typeof(*pos), member); \
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prefetch(pos->member.next), &pos->member != (head); \
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pos = list_entry_rcu(pos->member.next, typeof(*pos), member))
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#endif
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#ifndef list_entry_rcu
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#define list_entry_rcu(ptr, type, member) \
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container_of(rcu_dereference(ptr), type, member)
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#endif
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#endif /* __BACKPORT_RCULIST_H */
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