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![Denys Vlasenko](/assets/img/avatar_default.png)
This inline has ~500 callsites. On 04/14/2015 08:37 PM, David Miller wrote: > That BUG_ON() was added 7 years ago, and I don't remember it ever > triggering or helping us diagnose something, so just remove it and > keep the function inlined. On x86 allyesconfig build: text data bss dec hex filename 82447071 22255384 20627456 125329911 77861f7 vmlinux4 82441375 22255384 20627456 125324215 7784bb7 vmlinux5prime Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> CC: Eric W. Biederman <ebiederm@xmission.com> CC: David S. Miller <davem@davemloft.net> CC: Jan Engelhardt <jengelh@medozas.de> CC: Jiri Pirko <jpirko@redhat.com> CC: linux-kernel@vger.kernel.org CC: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
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* generic net pointers
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*/
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#ifndef __NET_GENERIC_H__
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#define __NET_GENERIC_H__
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#include <linux/bug.h>
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#include <linux/rcupdate.h>
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/*
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* Generic net pointers are to be used by modules to put some private
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* stuff on the struct net without explicit struct net modification
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*
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* The rules are simple:
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* 1. set pernet_operations->id. After register_pernet_device you
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* will have the id of your private pointer.
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* 2. set pernet_operations->size to have the code allocate and free
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* a private structure pointed to from struct net.
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* 3. do not change this pointer while the net is alive;
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* 4. do not try to have any private reference on the net_generic object.
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*
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* After accomplishing all of the above, the private pointer can be
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* accessed with the net_generic() call.
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*/
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struct net_generic {
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unsigned int len;
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struct rcu_head rcu;
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void *ptr[0];
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};
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static inline void *net_generic(const struct net *net, int id)
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{
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struct net_generic *ng;
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void *ptr;
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rcu_read_lock();
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ng = rcu_dereference(net->gen);
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ptr = ng->ptr[id - 1];
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rcu_read_unlock();
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return ptr;
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}
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#endif
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