From: Frederic Weisbecker <frederic@kernel.org>
To: "Zhou Ti (x2019cwm)" <x2019cwm@stfx.ca>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Yunfeng Ye <yeyunfeng@huawei.com>,
"Paul E . McKenney" <paulmck@kernel.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
Ingo Molnar <mingo@kernel.org>,
"rafael@kernel.org" <rafael@kernel.org>
Subject: Re: 回复: [PATCH 01/10] tick/nohz: Prevent tick_nohz_get_sleep_length() from returning negative value
Date: Thu, 25 Mar 2021 14:14:00 +0100 [thread overview]
Message-ID: <20210325131400.GA938586@lothringen> (raw)
In-Reply-To: <YTBPR01MB3262D78448BD2FB3AD5EB4F9C46B9@YTBPR01MB3262.CANPRD01.PROD.OUTLOOK.COM>
On Tue, Mar 16, 2021 at 04:08:08PM +0000, Zhou Ti (x2019cwm) wrote:
> But I don't think it's a good idea to handle this in callers, because logically the function shouldn't return negative values. Returning 0 directly would allow idle governors to get another chance to select again.
Hmm, I'm going to leave the last word to Rafael since cpuidle are the only
callers of this. In any case we need to fix it.
Thanks.
next prev parent reply other threads:[~2021-03-25 13:14 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-11 12:36 [PATCH 00/10] tick/nohz updates Frederic Weisbecker
2021-03-11 12:36 ` [PATCH 01/10] tick/nohz: Prevent tick_nohz_get_sleep_length() from returning negative value Frederic Weisbecker
2021-03-16 12:21 ` Peter Zijlstra
2021-03-16 13:37 ` Frederic Weisbecker
2021-03-16 14:35 ` Peter Zijlstra
2021-03-16 14:53 ` Frederic Weisbecker
2021-03-16 15:26 ` Rafael J. Wysocki
2021-03-16 15:57 ` 回复: " Zhou Ti (x2019cwm)
2021-03-16 16:08 ` Zhou Ti (x2019cwm)
2021-03-16 16:25 ` Peter Zijlstra
2021-03-17 21:49 ` Zhou Ti (x2019cwm)
2021-03-25 13:14 ` Frederic Weisbecker [this message]
2021-03-25 18:56 ` Rafael J. Wysocki
2021-03-25 19:18 ` Zhou Ti (x2019cwm)
2021-03-25 19:50 ` Rafael J. Wysocki
2021-03-25 20:37 ` Zhou Ti (x2019cwm)
2021-03-26 17:01 ` Rafael J. Wysocki
2021-03-26 17:53 ` Zhou Ti (x2019cwm)
2021-03-26 18:54 ` Rafael J. Wysocki
2021-03-26 22:53 ` Zhou Ti (x2019cwm)
2021-03-29 12:44 ` Rafael J. Wysocki
2021-03-29 14:49 ` Zhou Ti (x2019cwm)
2021-03-11 12:37 ` [PATCH 02/10] tick/nohz: Add tick_nohz_full_this_cpu() Frederic Weisbecker
2021-03-16 12:28 ` Peter Zijlstra
2021-03-16 13:05 ` Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 03/10] tick/nohz: Conditionally restart tick on idle exit Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 04/10] tick/nohz: Remove superflous check for CONFIG_VIRT_CPU_ACCOUNTING_NATIVE Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 05/10] tick/nohz: Update idle_exittime on actual idle exit Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 06/10] timer: Report ignored local enqueue in nohz mode Frederic Weisbecker
2021-03-16 15:27 ` Peter Zijlstra
2021-03-25 13:07 ` Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 07/10] tick/nohz: Update nohz_full Kconfig help Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 08/10] tick/nohz: Only wakeup a single target cpu when kicking a task Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 09/10] tick/nohz: Change signal tick dependency to wakeup CPUs of member tasks Frederic Weisbecker
2021-03-11 12:37 ` [PATCH 10/10] tick/nohz: Kick only _queued_ task whose tick dependency is updated Frederic Weisbecker
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