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rcu: Abstract default callback-list initialization from init_callback_list()

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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@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2015-01-18 18:21:09 -08:00
parent c517d838eb
commit d3f3f3f25b
1 changed files with 15 additions and 5 deletions
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20
kernel/rcu/tree.c
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@ -1327,18 +1327,28 @@ void rcu_cpu_stall_reset(void)
ACCESS_ONCE(rsp->jiffies_stall) = jiffies + ULONG_MAX / 2;
}
/*
* 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_default_callback_list(struct rcu_data *rdp)
{
int i;
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)
{
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;
init_default_callback_list(rdp);
}
/*