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From: Peter Zijlstra <peterz@infradead.org>
To: Quentin Perret <qperret@google.com>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	x86@kernel.org, hpa@zytor.com, sudeep.holla@arm.com,
	gregkh@linuxfoundation.org, rafael@kernel.org,
	viresh.kumar@linaro.org, juri.lelli@redhat.com,
	vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
	rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
	mcgrof@kernel.org, keescook@chromium.org, yzaikin@google.com,
	fweisbec@gmail.com, tkjos@google.com, kernel-team@android.com
Subject: Re: [PATCH 00/14] Modularize schedutil
Date: Fri, 8 May 2020 10:11:28 +0200	[thread overview]
Message-ID: <20200508081128.GM5298@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200507181012.29791-1-qperret@google.com>

On Thu, May 07, 2020 at 07:09:58PM +0100, Quentin Perret wrote:
> One challenge to implement GKI is to avoid bloating the kernel by
> compiling too many things in, especially given that different devices
> need different things. As such, anything that can be turned into a
> module helps GKI, by offering an alternative to having that component
> built-in. This is true for pretty much anything that can be made
> modular, including drivers as well as other kernel components, such as
> CPUFreq governors.

The idea is to move to 1 governor, schedutil. Also, I abhor all the
exports this thing does. Modules have no business touching most of that.

Look at every EXPORT you do and wonder ask yourself how you can abuse
it. Modules are not a good thing, they're horrible pieces of crap.

  parent reply	other threads:[~2020-05-08  8:12 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 18:09 [PATCH 00/14] Modularize schedutil Quentin Perret
2020-05-07 18:09 ` [PATCH 01/14] sched: Provide sched_set_deadline() Quentin Perret
2020-05-07 18:10 ` [PATCH 02/14] sched: cpufreq: Use sched_set_deadline() from sugov Quentin Perret
2020-05-07 18:10 ` [PATCH 03/14] sched: cpufreq: Introduce 'want_eas' governor flag Quentin Perret
2020-05-07 18:10 ` [PATCH 04/14] sched: cpufreq: Move sched_cpufreq_governor_change() Quentin Perret
2020-05-08  5:35   ` Pavan Kondeti
2020-05-08 13:18     ` Quentin Perret
2020-05-07 18:10 ` [PATCH 05/14] sched: cpufreq: Move schedutil_cpu_util() Quentin Perret
2020-05-07 18:10 ` [PATCH 06/14] arch_topology: Export cpu_scale per-cpu array Quentin Perret
2020-05-07 18:10 ` [PATCH 07/14] kthread: Export kthread_bind_mask() Quentin Perret
2020-05-07 18:10 ` [PATCH 08/14] sched/core: Export runqueues per-cpu array Quentin Perret
2020-05-08  8:07   ` Peter Zijlstra
2020-05-08 10:04     ` Quentin Perret
2020-05-07 18:10 ` [PATCH 09/14] sched/cpufreq: Export cpufreq_this_cpu_can_update() Quentin Perret
2020-05-07 18:10 ` [PATCH 10/14] sched/fair: Export cpu_util_freq() Quentin Perret
2020-05-07 18:10 ` [PATCH 11/14] tick/sched: Export tick_nohz_get_idle_calls_cpu Quentin Perret
2020-05-07 18:10 ` [PATCH 12/14] x86: Export arch_scale_freq_key Quentin Perret
2020-05-07 18:10 ` [PATCH 13/14] sched: cpufreq: Use IS_ENABLED() for schedutil Quentin Perret
2020-05-08  5:30   ` Pavan Kondeti
2020-05-08 13:21     ` Quentin Perret
2020-05-09  2:43       ` Pavan Kondeti
2020-05-07 18:10 ` [PATCH 14/14] sched: cpufreq: Modularize schedutil Quentin Perret
2020-05-07 21:34 ` [PATCH 00/14] " Valentin Schneider
2020-05-08 13:15   ` Quentin Perret
2020-05-08 14:52     ` Valentin Schneider
2020-05-08  5:33 ` Viresh Kumar
2020-05-08 13:18   ` Quentin Perret
2020-05-08  8:11 ` Peter Zijlstra [this message]
2020-05-08 10:37   ` Greg KH
2020-05-08 11:16     ` Quentin Perret
2020-05-08 11:31       ` Peter Zijlstra
2020-05-08 13:05         ` Quentin Perret
2020-05-08 13:40           ` Rafael J. Wysocki
2020-05-11  9:00             ` Quentin Perret
2020-05-11 15:26               ` Rafael J. Wysocki
2020-05-12  9:21                 ` Quentin Perret
2020-05-12 10:25                   ` Rafael J. Wysocki
2020-05-12 13:58                     ` Quentin Perret
2020-05-12 14:08                       ` Rafael J. Wysocki
2020-05-12 15:11                         ` Quentin Perret
2020-05-12 15:30                           ` Rafael J. Wysocki
2020-05-12 15:49                             ` Joel Fernandes
2020-05-13  8:57                               ` Quentin Perret
2020-05-12 16:26                             ` Quentin Perret
2020-05-12 17:30                               ` Rafael J. Wysocki
2020-05-13  9:41                                 ` Quentin Perret
2020-05-13 10:02                                   ` Greg KH
2020-05-13 10:06                                     ` Quentin Perret
2020-05-13 10:24                                       ` Greg KH
2020-05-08 14:09           ` Peter Zijlstra
2020-05-11  9:12             ` Quentin Perret
2020-05-08 11:26     ` Peter Zijlstra
2020-05-11  5:21       ` Viresh Kumar

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