linux-kernel - Re: [PATCH] remove CONFIG

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Message-ID: <YryJotKWelr5KFPO@zx2c4.com>
Date:   Wed, 29 Jun 2022 19:19:30 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Christoph Hellwig <hch@....de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Christian Brauner <brauner@...nel.org>,
        Hridya Valsaraju <hridya@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Theodore Ts'o <tytso@....edu>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "Alex Xu (Hello71)" <alex_y_xu@...oo.ca>,
        Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Neeraj Upadhyay <quic_neeraju@...cinc.com>,
        Josh Triplett <josh@...htriplett.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        wireguard@...ts.zx2c4.com, netdev@...r.kernel.org,
        rcu@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] remove CONFIG_ANDROID

On Wed, Jun 29, 2022 at 12:56:43PM -0400, Steven Rostedt wrote:
> > And it will also "break" anyone else doing frequent suspends from
> > userspace, as that behavior is still in no way related to
> > CONFIG_ANDROID.
> 
> Should there then be a CONFIG_FREQUENT_SUSPENDS ?

That'd be fine by me. It could be selected by PM_AUTOSLEEP as well.

[ Bikeshed: maybe CONFIG_PM_CONTINUOUS_SUSPENDS would make more sense,
  to really drive home how often these suspends are to make the option a
  reasonable thing to turn on. ]

I think Christoph had in mind a runtime switch instead (like a sysctl or
something), but it doesn't make a difference to me whether it's runtime
or compile time. If CONFIG_ANDROID is to go away, the code using it now
needs *some* replacement that's taken up by the Android people. So
whatever they agree to works for me, for what my concerns are.

Maybe v2 of this patchset can propose such an option and the right
Android people can be CC'd on it. (Who are they, by the way? There's no
android-kernel@...r mailing list, right?)

Jason