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| author | stephen hemminger <shemminger@vyatta.com> | 2010-03-17 20:31:11 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-20 15:44:35 -0700 |
| commit | 5c578aedcb21d79eeb4e9cf04ca5b276ac82614c (patch) | |
| tree | e6d682d3072fda2ae3977beca2beb23d222b6911 /include/linux/rculist.h | |
| parent | c2e21293c054817c42eb5fa9c613d2ad51954136 (diff) | |
| download | linux-5c578aedcb21d79eeb4e9cf04ca5b276ac82614c.tar.gz linux-5c578aedcb21d79eeb4e9cf04ca5b276ac82614c.tar.bz2 linux-5c578aedcb21d79eeb4e9cf04ca5b276ac82614c.zip | |
IPv6: convert addrconf hash list to RCU
Convert from reader/writer lock to RCU and spinlock for addrconf
hash list.
Adds an additional helper macro for hlist_for_each_entry_continue_rcu
to handle the continue case.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/rculist.h')
| -rw-r--r-- | include/linux/rculist.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/rculist.h b/include/linux/rculist.h index 2c9b46cff3d7..004908b104d5 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -428,5 +428,18 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ pos = rcu_dereference_raw(pos->next)) +/** + * hlist_for_each_entry_continue_rcu - iterate over a hlist continuing after current point + * @tpos: the type * to use as a loop cursor. + * @pos: the &struct hlist_node to use as a loop cursor. + * @member: the name of the hlist_node within the struct. + */ +#define hlist_for_each_entry_continue_rcu(tpos, pos, member) \ + for (pos = rcu_dereference((pos)->next); \ + pos && ({ prefetch(pos->next); 1; }) && \ + ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ + pos = rcu_dereference(pos->next)) + + #endif /* __KERNEL__ */ #endif |