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authorPaul E. McKenney <paulmck@linux.ibm.com>2018-11-29 03:57:54 +0300
committerPaul E. McKenney <paulmck@linux.ibm.com>2019-01-26 02:28:24 +0300
commitcd920e5a34abea837418691d366472311e7b9147 (patch)
tree3f6ebb87174919562a3f08a8301f52c959d2e4c9 /kernel/rcu/tree.c
parent1de462ed85062df2ab6939eeee1625e767052907 (diff)
downloadlinux-cd920e5a34abea837418691d366472311e7b9147.tar.xz
rcu: Inline force_quiescent_state() into rcu_force_quiescent_state()
Given that rcu_force_quiescent_state() is a simple wrapper around force_quiescent_state(), this commit saves a few lines of code by inlining force_quiescent_state() into rcu_force_quiescent_state(), and changing all references to force_quiescent_state() to instead invoke rcu_force_quiescent_state(). Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'kernel/rcu/tree.c')
-rw-r--r--kernel/rcu/tree.c21
1 files changed, 6 insertions, 15 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index f4edc664fb65..e56a46444775 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -479,7 +479,6 @@ module_param_cb(jiffies_till_next_fqs, &next_fqs_jiffies_ops, &jiffies_till_next
module_param(rcu_kick_kthreads, bool, 0644);
static void force_qs_rnp(int (*f)(struct rcu_data *rdp));
-static void force_quiescent_state(void);
static int rcu_pending(void);
/*
@@ -504,15 +503,6 @@ unsigned long rcu_exp_batches_completed(void)
EXPORT_SYMBOL_GPL(rcu_exp_batches_completed);
/*
- * Force a quiescent state.
- */
-void rcu_force_quiescent_state(void)
-{
- force_quiescent_state();
-}
-EXPORT_SYMBOL_GPL(rcu_force_quiescent_state);
-
-/*
* Convert a ->gp_state value to a character string.
*/
static const char *gp_state_getname(short gs)
@@ -1310,7 +1300,7 @@ static void print_other_cpu_stall(unsigned long gp_seq)
panic_on_rcu_stall();
- force_quiescent_state(); /* Kick them all. */
+ rcu_force_quiescent_state(); /* Kick them all. */
}
static void print_cpu_stall(void)
@@ -2578,7 +2568,7 @@ static void force_qs_rnp(int (*f)(struct rcu_data *rdp))
* Force quiescent states on reluctant CPUs, and also detect which
* CPUs are in dyntick-idle mode.
*/
-static void force_quiescent_state(void)
+void rcu_force_quiescent_state(void)
{
unsigned long flags;
bool ret;
@@ -2610,6 +2600,7 @@ static void force_quiescent_state(void)
raw_spin_unlock_irqrestore_rcu_node(rnp_old, flags);
rcu_gp_kthread_wake();
}
+EXPORT_SYMBOL_GPL(rcu_force_quiescent_state);
/*
* This function checks for grace-period requests that fail to motivate
@@ -2801,9 +2792,9 @@ static void __call_rcu_core(struct rcu_data *rdp, struct rcu_head *head,
/*
* Force the grace period if too many callbacks or too long waiting.
- * Enforce hysteresis, and don't invoke force_quiescent_state()
+ * Enforce hysteresis, and don't invoke rcu_force_quiescent_state()
* if some other CPU has recently done so. Also, don't bother
- * invoking force_quiescent_state() if the newly enqueued callback
+ * invoking rcu_force_quiescent_state() if the newly enqueued callback
* is the only one waiting for a grace period to complete.
*/
if (unlikely(rcu_segcblist_n_cbs(&rdp->cblist) >
@@ -2820,7 +2811,7 @@ static void __call_rcu_core(struct rcu_data *rdp, struct rcu_head *head,
rdp->blimit = LONG_MAX;
if (rcu_state.n_force_qs == rdp->n_force_qs_snap &&
rcu_segcblist_first_pend_cb(&rdp->cblist) != head)
- force_quiescent_state();
+ rcu_force_quiescent_state();
rdp->n_force_qs_snap = rcu_state.n_force_qs;
rdp->qlen_last_fqs_check = rcu_segcblist_n_cbs(&rdp->cblist);
}