Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
net: netlink: Remove unused function
lockdep_genl_is_held() and its caller arm not used now, just remove them.
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Link: https://lore.kernel.org/r/20210729074854.8968-1-yajun.deng@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
Yajun Deng
and committed by
Jakub Kicinski
bc830525
373a1f2b
-31
-23
include/linux/genetlink.h
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include/linux/genetlink.h
···
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/* All generic netlink requests are serialized by a global lock. */
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extern void genl_lock(void);
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extern void genl_unlock(void);
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#ifdef CONFIG_LOCKDEP
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extern bool lockdep_genl_is_held(void);
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#endif
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/* for synchronisation between af_netlink and genetlink */
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extern atomic_t genl_sk_destructing_cnt;
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extern wait_queue_head_t genl_sk_destructing_waitq;
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-
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/**
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* rcu_dereference_genl - rcu_dereference with debug checking
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* @p: The pointer to read, prior to dereferencing
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*
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* Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
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* or genl mutex. Note : Please prefer genl_dereference() or rcu_dereference()
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*/
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#define rcu_dereference_genl(p) \
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rcu_dereference_check(p, lockdep_genl_is_held())
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/**
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* genl_dereference - fetch RCU pointer when updates are prevented by genl mutex
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* @p: The pointer to read, prior to dereferencing
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*
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* Return the value of the specified RCU-protected pointer, but omit
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* the READ_ONCE(), because caller holds genl mutex.
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*/
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#define genl_dereference(p) \
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rcu_dereference_protected(p, lockdep_genl_is_held())
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#define MODULE_ALIAS_GENL_FAMILY(family)\
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MODULE_ALIAS_NET_PF_PROTO_NAME(PF_NETLINK, NETLINK_GENERIC, "-family-" family)
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net/netlink/genetlink.c
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net/netlink/genetlink.c
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}
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EXPORT_SYMBOL(genl_unlock);
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#ifdef CONFIG_LOCKDEP
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bool lockdep_genl_is_held(void)
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{
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return lockdep_is_held(&genl_mutex);
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}
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EXPORT_SYMBOL(lockdep_genl_is_held);
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#endif
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static void genl_lock_all(void)
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{
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down_write(&cb_lock);