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rcu: Remove unused rdp parameter from rcu_check_gp_start_stall()

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The rcu_check_gp_start_stall() works entirely on rnp parameter,
and never uses it's rdp parameter. this commit therefore drop it,
updating both callers and the declaration.

No functional change.

Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Zqiang 2026-07-22 18:23:47 +08:00 committed by Paul E. McKenney
parent 8fe479568c
commit 7f28a4c8f3
3 changed files with 4 additions and 6 deletions
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2
kernel/rcu/tree.c
View File

@ -2890,7 +2890,7 @@ static __latent_entropy void rcu_core(void)
rcu_accelerate_cbs_unlocked(rnp, rdp);
}
rcu_check_gp_start_stall(rnp, rdp, rcu_jiffies_till_stall_check());
rcu_check_gp_start_stall(rnp, rcu_jiffies_till_stall_check());
/* If there are callbacks ready, invoke them. */
if (!rcu_rdp_is_offloaded(rdp) && rcu_segcblist_ready_cbs(&rdp->cblist) &&

3
kernel/rcu/tree.h
View File

@ -544,8 +544,7 @@ static bool rcu_nohz_full_cpu(void);
static void record_gp_stall_check_time(void);
static void rcu_iw_handler(struct irq_work *iwp);
static void check_cpu_stall(struct rcu_data *rdp);
static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp,
const unsigned long gpssdelay);
static void rcu_check_gp_start_stall(struct rcu_node *rnp, const unsigned long gpssdelay);
/* Forward declarations for tree_exp.h. */
static void sync_rcu_do_polled_gp(struct work_struct *wp);

5
kernel/rcu/tree_stall.h
View File

@ -998,8 +998,7 @@ EXPORT_SYMBOL_GPL(show_rcu_gp_kthreads);
* This function checks for grace-period requests that fail to motivate
* RCU to come out of its idle mode.
*/
static void rcu_check_gp_start_stall(struct rcu_node *rnp, struct rcu_data *rdp,
const unsigned long gpssdelay)
static void rcu_check_gp_start_stall(struct rcu_node *rnp, const unsigned long gpssdelay)
{
unsigned long flags;
unsigned long j;
@ -1074,7 +1073,7 @@ void rcu_fwd_progress_check(unsigned long j)
__func__, jiffies - data_race(READ_ONCE(rcu_state.gp_end)));
preempt_disable();
rdp = this_cpu_ptr(&rcu_data);
rcu_check_gp_start_stall(rdp->mynode, rdp, j);
rcu_check_gp_start_stall(rdp->mynode, j);
preempt_enable();
}
for_each_possible_cpu(cpu) {