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platform_kernel-5.15
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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>
This commit is contained in:
Paul E. McKenney 2018-11-28 16:57:54 -08:00
parent 1de462ed85
commit cd920e5a34
1 changed files with 6 additions and 15 deletions
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21
kernel/rcu/tree.c
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@ -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);
/*
@ -503,15 +502,6 @@ 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.
*/
@ -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);
}