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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-02 09:39:09 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-08 18:52:26 -0700 |
| commit | aaaad0bfac019bb7701f92ebc1b31b4f85e47b55 (patch) | |
| tree | ffed90fcb1e491863c23cb87ee4514beff8c2121 /include/linux/rcu_node_tree.h | |
| parent | rcu: Add memory barriers for NOCB leader wakeup (diff) | |
| download | wireguard-linux-aaaad0bfac019bb7701f92ebc1b31b4f85e47b55.tar.xz wireguard-linux-aaaad0bfac019bb7701f92ebc1b31b4f85e47b55.zip | |
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 <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rcu_node_tree.h')
| -rw-r--r-- | include/linux/rcu_node_tree.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/rcu_node_tree.h b/include/linux/rcu_node_tree.h index 4b766b61e1a0..426cee67f0e2 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 |