From: Ingo Molnar <mingo@kernel.org>
To: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
rt@linutronix.de, Richard Cochran <rcochran@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linus Walleij <linus.walleij@linaro.org>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
Richard Purdie <rpurdie@rpsys.net>,
linux-leds@vger.kernel.org
Subject: Re: [patch V2 43/67] leds/trigger/cpu: Convert to hotplug state machine
Date: Thu, 14 Jul 2016 09:47:13 +0200 [thread overview]
Message-ID: <20160714074713.GA17287@gmail.com> (raw)
In-Reply-To: <57873CFF.1010803@samsung.com>
* Jacek Anaszewski <j.anaszewski@samsung.com> wrote:
> > @@ -133,7 +125,13 @@ static int __init ledtrig_cpu_init(void)
> > }
> >
> > register_syscore_ops(&ledtrig_cpu_syscore_ops);
> > - register_cpu_notifier(&ledtrig_cpu_nb);
> > +
> > + /*
> > + * FIXME: Why needs this to happen in the interrupt disabled
> > + * low level bringup phase of a cpu?
> > + */
>
> Why wasn't it possible to clarify the issue before the
> submission?
Nothing has been applied yet (this submission is part of the clarification
process), are you fine with this conversion as-is, with a separate patch doing any
followup fixes - or would you prefer another approach?
This CPU hotplug series tries to do straightforward conversions to the CPU hotplug
state machine without changing behavior - while pointing out any problems that
were found along the way.
I agree that the addition of this FIXME should probably have been pointed out in
the changelog as well, but this patch was submitted once already with no feedback
received - and that's the historic pattern with such types of series: only a low
percentage of all driver maintainers replies so we have to be proactive to a
certain degree to have a chance of improving core kernel infrastructure. It's
better to add FIXMEs with open questions that to introduce subtle problems.
Thanks,
Ingo
next prev parent reply other threads:[~2016-07-14 7:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160713153219.128052238@linutronix.de>
2016-07-13 17:16 ` [patch V2 43/67] leds/trigger/cpu: Convert to hotplug state machine Anna-Maria Gleixner
2016-07-14 7:19 ` Jacek Anaszewski
2016-07-14 7:47 ` Ingo Molnar [this message]
2016-07-14 8:10 ` Jacek Anaszewski
2016-07-14 9:41 ` Peter Zijlstra
2016-07-14 11:23 ` Jacek Anaszewski
2016-07-14 11:33 ` Thomas Gleixner
2016-07-14 11:55 ` Jacek Anaszewski
2016-07-15 14:10 ` Sebastian Andrzej Siewior
2016-07-18 8:26 ` Jacek Anaszewski
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