Commit-ID: d3f3f3f25b1d4ee152f3f19a812c3a282da4c120
Gitweb: http://git.kernel.org/tip/d3f3f3f25b1d4ee152f3f19a812c3a282da4c120
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Sun, 18 Jan 2015 18:21:09 -0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 26 Feb 2015 12:01:25 -0800
rcu: Abstract default callback-list initialization from init_callback_list()
In preparation for early-boot posting of callbacks, this commit abstracts
initialization of the default (non-no-CB) callbacks list from the
init_callback_list() function into a new init_default_callback_list()
function.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/tree.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 48d640c..f8cdb92 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -1328,20 +1328,30 @@ void rcu_cpu_stall_reset(void)
}
/*
- * Initialize the specified rcu_data structure's callback list to empty.
+ * Initialize the specified rcu_data structure's default callback list
+ * to empty. The default callback list is the one that is not used by
+ * no-callbacks CPUs.
*/
-static void init_callback_list(struct rcu_data *rdp)
+static void init_default_callback_list(struct rcu_data *rdp)
{
int i;
- if (init_nocb_callback_list(rdp))
- return;
rdp->nxtlist = NULL;
for (i = 0; i < RCU_NEXT_SIZE; i++)
rdp->nxttail[i] = &rdp->nxtlist;
}
/*
+ * Initialize the specified rcu_data structure's callback list to empty.
+ */
+static void init_callback_list(struct rcu_data *rdp)
+{
+ if (init_nocb_callback_list(rdp))
+ return;
+ init_default_callback_list(rdp);
+}
+
+/*
* Determine the value that ->completed will have at the end of the
* next subsequent grace period. This is used to tag callbacks so that
* a CPU can invoke callbacks in a timely fashion even if that CPU has
--
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