From: Paul E. McKenney Date: Tue, 2 May 2017 16:39:09 +0000 (-0700) Subject: rcu: Flag need for rcu_node_tree.h and rcu_segcblist.h visibility X-Git-Tag: v4.14-rc1~648^2^2~40 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=aaaad0bfac019bb7701f92ebc1b31b4f85e47b55;p=platform%2Fkernel%2Flinux-rpi.git rcu: Flag need for rcu_node_tree.h and rcu_segcblist.h visibility 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 --- diff --git a/include/linux/rcu_node_tree.h b/include/linux/rcu_node_tree.h index 4b766b6..426cee6 100644 --- a/include/linux/rcu_node_tree.h +++ b/include/linux/rcu_node_tree.h @@ -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 diff --git a/include/linux/rcu_segcblist.h b/include/linux/rcu_segcblist.h index ba4d262..c3ad00e 100644 --- a/include/linux/rcu_segcblist.h +++ b/include/linux/rcu_segcblist.h @@ -1,6 +1,10 @@ /* * 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