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From: Kunwu Chan <kunwu.chan@gmail.com>
To: paulmck@kernel.org, jiangshanlai@gmail.com, josh@joshtriplett.org
Cc: rostedt@goodmis.org, mathieu.desnoyers@efficios.com,
	rcu@vger.kernel.org, linux-kernel@vger.kernel.org,
	Kunwu Chan <kunwu.chan@gmail.com>
Subject: [PATCH 12/13] srcutree: Remove debug pr_alert()s
Date: Mon,  7 Sep 2026 15:58:28 +0800	[thread overview]
Message-ID: <20260907075829.2073224-13-kunwu.chan@linux.dev> (raw)
In-Reply-To: <20260907075829.2073224-1-kunwu.chan@linux.dev>

From: Kunwu Chan <kunwu.chan@gmail.com>

Remove the debug pr_alert()s from srcu_gp_start() and
synchronize_srcu_atomic().

Signed-off-by: Kunwu Chan <kunwu.chan@gmail.com>
---
 kernel/rcu/srcutree.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index a93bf803e2f7..a016c93d65cb 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -916,7 +916,6 @@ static void srcu_gp_start(struct srcu_struct *ssp)
 {
 	int state;
 
-	/*&&&&*/pr_alert("%s() start: ->srcu_gp_seq: %lx ->srcu_gp_seq_needed: %lx\n", __func__, ssp->srcu_sup->srcu_gp_seq, ssp->srcu_sup->srcu_gp_seq_needed);
 	lockdep_assert_held(&ACCESS_PRIVATE(ssp->srcu_sup, lock));
 	WARN_ON_ONCE(ULONG_CMP_GE(ssp->srcu_sup->srcu_gp_seq, ssp->srcu_sup->srcu_gp_seq_needed));
 	WRITE_ONCE(ssp->srcu_sup->srcu_gp_start, jiffies);
@@ -2152,7 +2151,6 @@ void synchronize_srcu_atomic(struct srcu_struct *ssp)
 	// OK, we really have to do it ourselves.  Start the grace period.
 	non_block_start();  // We must not voluntarily block!
 	smp_store_release(&sup->srcu_gp_seq_needed, srcu_state); // See srcu_funnel_gp_start().
-	/*&&&&*/pr_alert("%s() start: ->srcu_gp_seq: %lx ->srcu_gp_seq_needed: %lx\n", __func__, ssp->srcu_sup->srcu_gp_seq, ssp->srcu_sup->srcu_gp_seq_needed);
 	ASSERT_EXCLUSIVE_WRITER(ssp->srcu_sup->srcu_gp_seq);
 	srcu_gp_start(ssp);
 	raw_spin_unlock_irq_rcu_node(sup);
@@ -2208,7 +2206,6 @@ void synchronize_srcu_atomic(struct srcu_struct *ssp)
 		cpu_relax();
 		srcu_advance_state(ssp, true);
 	}
-	/*&&&&*/pr_alert("%s() end: ->srcu_gp_seq: %lx ->srcu_gp_seq_needed: %lx\n", __func__, ssp->srcu_sup->srcu_gp_seq, ssp->srcu_sup->srcu_gp_seq_needed);
 	ASSERT_EXCLUSIVE_WRITER(sup->srcu_atomic_gp_flag);
 	atomic_set_release(&sup->srcu_atomic_gp_flag, 0);
 	preempt_enable();
-- 
2.43.0


  parent reply	other threads:[~2026-09-07  7:59 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-07  7:58 [PATCH 00/13] srcu: Round out atomic SRCU support Kunwu Chan
2026-09-07  7:58 ` [PATCH 01/13] litmus: Add SRCU fastpath anchor-before-scan test Kunwu Chan
2026-09-08 23:58   ` Paul E. McKenney
2026-09-09  3:02     ` Kunwu Chan
2026-09-07  7:58 ` [PATCH 02/13] litmus: Add SRCU fastpath scan-before-anchor test Kunwu Chan
2026-09-07  7:58 ` [PATCH 03/13] srcutree: Add reader-free fastpath to synchronize_srcu_atomic() Kunwu Chan
2026-09-08 20:29   ` Paul E. McKenney
2026-09-08 21:13     ` David Woodhouse
2026-09-08 21:54       ` Paul E. McKenney
2026-09-08 22:09         ` David Woodhouse
2026-09-08 22:55           ` Paul E. McKenney
2026-09-08 22:26     ` David Woodhouse
2026-09-08 22:53       ` Paul E. McKenney
2026-09-08 22:56         ` David Woodhouse
2026-09-08 23:34           ` Paul E. McKenney
2026-09-09  3:35       ` Kunwu Chan
2026-09-07  7:58 ` [PATCH 04/13] rcutorture: Add atomic-SRCU support to torture.sh Kunwu Chan
2026-09-08 23:34   ` Paul E. McKenney
2026-09-09 22:35     ` Paul E. McKenney
2026-09-10  1:30       ` KunWu Chan
2026-09-10  3:47         ` Paul E. McKenney
2026-09-10  4:31           ` KunWu Chan
2026-09-07  7:58 ` [PATCH 05/13] srcutree: Honor is_atomic in check_init_srcu_struct() Kunwu Chan
2026-09-08 20:27   ` Paul E. McKenney
2026-09-07  7:58 ` [PATCH 06/13] srcutree: Make init_srcu_struct_atomic() prevent transition to big Kunwu Chan
2026-09-08 23:36   ` Paul E. McKenney
2026-09-09  2:34     ` Kunwu Chan
2026-09-10  0:08       ` Paul E. McKenney
2026-09-07  7:58 ` [PATCH 07/13] srcutree: Don't transition atomic SRCU to big in srcu_gp_end() Kunwu Chan
2026-09-08 23:38   ` Paul E. McKenney
2026-09-09  2:45     ` Kunwu Chan
2026-09-10  0:13       ` Paul E. McKenney
2026-09-10  3:18         ` KunWu Chan
2026-09-10  3:46           ` Paul E. McKenney
2026-09-10  4:27             ` KunWu Chan
2026-09-07  7:58 ` [PATCH 08/13] srcutree: Forbid srcu_expedite_current() on atomic SRCU Kunwu Chan
2026-09-08 23:43   ` Paul E. McKenney
2026-09-07  7:58 ` [PATCH 09/13] rcutorture: Disable srcu_expedite_current() for " Kunwu Chan
2026-09-08 23:48   ` Paul E. McKenney
2026-09-07  7:58 ` [PATCH 10/13] srcutree: Skip callback scheduling for atomic SRCU grace periods Kunwu Chan
2026-09-09  0:01   ` Paul E. McKenney
2026-09-07  7:58 ` [PATCH 11/13] srcutree: Remove srcu_barrier() sleep for atomic SRCU Kunwu Chan
2026-09-09  0:05   ` Paul E. McKenney
2026-09-07  7:58 ` Kunwu Chan [this message]
2026-09-09  0:06   ` [PATCH 12/13] srcutree: Remove debug pr_alert()s Paul E. McKenney
2026-09-07  7:58 ` [PATCH 13/13] srcu: Restrict atomic-SRCU non_block annotation to task context Kunwu Chan
2026-09-09  0:11   ` Paul E. McKenney
2026-09-10 12:16 ` [PATCH 00/13] srcu: Round out atomic SRCU support Zqiang
2026-09-11  2:31   ` KunWu Chan
2026-09-11  9:49   ` KunWu Chan

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