rcu: Flag need for rcu_node_tree.h and rcu_segcblist.h visibility (aaaad0bf) · Commits · 戴 / test

The rcu_node_tree.h and rcu_segcblist.h header files in the include/linux directory might appear at first sight to be internal to the RCU implementation. However, the definitions in these files are needed to determine the size of TREE SRCU's srcu_struct structure, so they must be externally visible, which is why they live in include/linux. This commit adds comments to this effect to those files. Signed-off-by:

Paul E. McKenney <paulmck@linux.vnet.ibm.com>

include/linux/rcu_node_tree.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,10 @@
		* unlimited scalability while maintaining a constant level of contention
		* on the root node.
		*
		* This seemingly RCU-private file must be available to SRCU users
		* because the size of the TREE SRCU srcu_struct structure depends
		* on these definitions.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or

include/linux/rcu_segcblist.h

+4 −0

Original line number	Diff line number	Diff line
		/*
		* RCU segmented callback lists
		*
		* This seemingly RCU-private file must be available to SRCU users
		* because the size of the TREE SRCU srcu_struct structure depends
		* on these definitions.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or

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