From: Frederic Weisbecker <frederic@kernel.org>
To: "Joel Fernandes (Google)" <joel@joelfernandes.org>
Cc: linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
Zhouyi Zhou <zhouzhouyi@gmail.com>, Will Deacon <will@kernel.org>,
Marc Zyngier <maz@kernel.org>, rcu <rcu@vger.kernel.org>,
stable@vger.kernel.org
Subject: Re: [PATCH v2 04/13] tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
Date: Sun, 26 Mar 2023 21:34:35 +0200 [thread overview]
Message-ID: <ZCCeS/VeGthUNgIY@localhost.localdomain> (raw)
In-Reply-To: <20230325173316.3118674-5-joel@joelfernandes.org>
Le Sat, Mar 25, 2023 at 05:33:07PM +0000, Joel Fernandes (Google) a écrit :
> For CONFIG_NO_HZ_FULL systems, the tick_do_timer_cpu cannot be offlined.
> However, cpu_is_hotpluggable() still returns true for those CPUs. This causes
> torture tests that do offlining to end up trying to offline this CPU causing
> test failures. Such failure happens on all architectures.
It might be worth noting that hotplug failure is fine on hotplug testing.
The issue here is the repetitive error message in the logs.
Other than that:
Acked-by: Frederic Weisbecker <frederic@kernel.org>
next prev parent reply other threads:[~2023-03-26 19:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-25 17:33 [PATCH v2 00/13] Core RCU patches for 6.4 Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 01/13] MAINTAINERS: Change Joel Fernandes from R: to M: Joel Fernandes (Google)
2023-03-26 19:19 ` Frederic Weisbecker
2023-03-25 17:33 ` [PATCH v2 02/13] MAINTAINERS: Add Boqun to RCU entry Joel Fernandes (Google)
2023-03-26 19:19 ` Frederic Weisbecker
2023-03-25 17:33 ` [PATCH v2 03/13] MAINTAINERS: Add Zqiang as a RCU reviewer Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 04/13] tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem Joel Fernandes (Google)
2023-03-26 19:34 ` Frederic Weisbecker [this message]
2023-03-30 15:49 ` Joel Fernandes
2023-03-25 17:33 ` [PATCH v2 05/13] rcu/trace: use strscpy() to instead of strncpy() Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 06/13] rcu: Fix set/clear TICK_DEP_BIT_RCU_EXP bitmask race Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 07/13] rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 08/13] rcu: Register rcu-lazy shrinker only for CONFIG_RCU_LAZY=y kernels Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 09/13] rcu: Remove never-set needwake assignment from rcu_report_qs_rdp() Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 10/13] rcu: Permit start_poll_synchronize_rcu_expedited() to be invoked early Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 11/13] rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan() Joel Fernandes (Google)
2023-03-26 19:53 ` Frederic Weisbecker
2023-03-25 17:33 ` [PATCH v2 12/13] rcu: Avoid stack overflow due to __rcu_irq_enter_check_tick() being kprobe-ed Joel Fernandes (Google)
2023-03-25 17:33 ` [PATCH v2 13/13] rcu: Protect rcu_print_task_exp_stall() ->exp_tasks access Joel Fernandes (Google)
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