From: Nicolas Pitre <nicolas.pitre@linaro.org>
To: John Stultz <john.stultz@linaro.org>, Michal Marek <mmarek@suse.com>
Cc: Richard Cochran <richardcochran@gmail.com>,
Paul Bolle <pebolle@tiscali.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Josh Triplett <josh@joshtriplett.org>,
Edward Cree <ecree@solarflare.com>,
netdev@vger.kernel.org, linux-kbuild@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/4] make POSIX timers optional with some Kconfig help
Date: Mon, 7 Nov 2016 17:31:50 -0500 (EST) [thread overview]
Message-ID: <alpine.LFD.2.20.1611071723280.14694@knanqh.ubzr> (raw)
In-Reply-To: <1478556899-2951-1-git-send-email-nicolas.pitre@linaro.org>
On Mon, 7 Nov 2016, Nicolas Pitre wrote:
> Many embedded systems don't need the full POSIX timer support.
> Configuring them out provides a nice kernel image size reduction.
>
> When POSIX timers are configured out, the PTP clock subsystem should be
> left out as well. However a bunch of ethernet drivers currently *select*
> the later in their Kconfig entries. Therefore some more work was needed
> to break that hard dependency from those drivers without preventing their
> usage altogether.
>
> Therefore this series also includes kconfig changes to implement a new
> keyword to express some reverse dependencies like "select" does, named
> "imply", and still allowing for the target config symbol to be disabled
> if the user or a direct dependency says so.
>
> At this point I'd like to gather ACKs especially from people in the "To"
> field. Ideally this would need to go upstream as a single series to avoid
> cross subsystem dependency issues. So far it was suggested that this should go
> via the kbuild tree.
This is also available here for those who prefer a git tree:
git://git.linaro.org/people/nicolas.pitre/linux/ configurable_posix_timers
Nicolas
next prev parent reply other threads:[~2016-11-07 22:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 22:14 [PATCH v3 0/4] make POSIX timers optional with some Kconfig help Nicolas Pitre
2016-11-07 22:14 ` [PATCH v3 1/4] kconfig: introduce the "imply" keyword Nicolas Pitre
2016-11-07 22:14 ` [PATCH v3 2/4] kconfig: regenerate *.c_shipped files after previous changes Nicolas Pitre
2016-11-07 22:31 ` Josh Triplett
2016-11-07 22:41 ` Nicolas Pitre
2016-11-07 23:12 ` Josh Triplett
2016-11-07 22:14 ` [PATCH v3 3/4] ptp_clock: allow for it to be optional Nicolas Pitre
2016-11-08 13:10 ` Edward Cree
2016-11-07 22:14 ` [PATCH v3 4/4] posix-timers: make it configurable Nicolas Pitre
2016-11-08 17:42 ` John Stultz
2016-11-08 18:19 ` Nicolas Pitre
2016-11-08 18:48 ` John Stultz
2016-11-07 22:31 ` Nicolas Pitre [this message]
2016-11-08 16:47 ` [PATCH v3 0/4] make POSIX timers optional with some Kconfig help Thomas Gleixner
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