From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
rostedt@goodmis.org, Zqiang <qiang.zhang@linux.dev>,
"Paul E . McKenney" <paulmck@kernel.org>
Subject: [PATCH RFC 02/10] rcu-tasks: Remove unused struct rcu_tasks's->n_ipis_fails variables
Date: Thu, 30 Jul 2026 18:03:53 -0700 [thread overview]
Message-ID: <20260731010401.3531631-2-paulmck@kernel.org> (raw)
In-Reply-To: <c50fb3e6-8d9f-4311-953e-a4703ba1e863@paulmck-laptop>
From: Zqiang <qiang.zhang@linux.dev>
The RCU tasks trace has been reimplemented by 'commit c27cea4416a3
("rcu: Re-implement RCU Tasks Trace in terms of SRCU-fast")', the
rcu_tasks structure's->n_ipis_fails is no longer used, this commit
therefore remove it.
Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/tasks.h | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index f4da5fad70f516..7f7d1e6362178a 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -67,7 +67,6 @@ struct rcu_tasks_percpu {
* @gp_start: Most recent grace-period start in jiffies.
* @tasks_gp_seq: Number of grace periods completed since boot in upper bits.
* @n_ipis: Number of IPIs sent to encourage grace periods to end.
- * @n_ipis_fails: Number of IPI-send failures.
* @kthread_ptr: This flavor's grace-period/callback-invocation kthread.
* @lazy_jiffies: Number of jiffies to allow callbacks to be lazy.
* @pregp_func: This flavor's pre-grace-period function (optional).
@@ -102,7 +101,6 @@ struct rcu_tasks {
unsigned long gp_start;
unsigned long tasks_gp_seq;
unsigned long n_ipis;
- unsigned long n_ipis_fails;
struct task_struct *kthread_ptr;
unsigned long lazy_jiffies;
rcu_tasks_gp_func_t gp_func;
@@ -735,12 +733,12 @@ static void show_rcu_tasks_generic_gp_kthread(struct rcu_tasks *rtp, char *s)
if (havecbs && haveurgent && haveurgentcbs)
break;
}
- pr_info("%s: %s(%d) since %lu g:%lu i:%lu/%lu %c%c%c%c l:%lu %s\n",
+ pr_info("%s: %s(%d) since %lu g:%lu i:%lu %c%c%c%c l:%lu %s\n",
rtp->kname,
tasks_gp_state_getname(rtp), data_race(rtp->gp_state),
jiffies - data_race(rtp->gp_jiffies),
data_race(rcu_seq_current(&rtp->tasks_gp_seq)),
- data_race(rtp->n_ipis_fails), data_race(rtp->n_ipis),
+ data_race(rtp->n_ipis),
".k"[!!data_race(rtp->kthread_ptr)],
".C"[havecbs],
".u"[haveurgent],
--
2.40.1
next prev parent reply other threads:[~2026-07-31 1:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 1:03 [PATCH 0/10] RCU Tasks updates for v7.3 Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 01/10] rcu-tasks: TASKS_TRACE_RCU doesn't need IRQ_WORK Paul E. McKenney
2026-07-31 1:03 ` Paul E. McKenney [this message]
2026-07-31 1:03 ` [PATCH RFC 03/10] rcu-tasks: Dump rcu tasks status when the boot-test failed Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 04/10] rcu-tasks: Apply READ_ONCE() and WRITE_ONCE() to fix data race Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 05/10] rcu-tasks: Remove smp_mb() in rcu_spawn_tasks_kthread_generic() Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 06/10] rcu-tasks: Update comments in call_rcu_tasks_generic() Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 07/10] rcu-tasks: Dump rtpcp->lazy_timer status in show_rcu_tasks_generic_gp_kthread() Paul E. McKenney
2026-07-31 1:03 ` [PATCH RFC 08/10] rcu-tasks: Fix IRQ read lock/unlock data race Paul E. McKenney
2026-07-31 1:04 ` [PATCH RFC 09/10] rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer Paul E. McKenney
2026-07-31 1:04 ` [PATCH RFC 10/10] rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude() Paul E. McKenney
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