linux-kernel - Re: [RFC/RFT patch 0/7] timekeeping: Unify clock MONOTONIC and clock BOOTTIME

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Date:   Tue, 24 Apr 2018 17:00:58 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Genki Sky <sky@...ki.is>
cc:     John Stultz <john.stultz@...aro.org>,
        David Herrmann <dh.herrmann@...il.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [RFC/RFT patch 0/7] timekeeping: Unify clock MONOTONIC and clock
 BOOTTIME

On Tue, 24 Apr 2018, Genki Sky wrote:
> Sorry to have been the bearer of bad news :(.

No problem. We're not shooting the messengers

> Again, I just have my user hat on here. It does seem like this unifying
> would have been nice to have. And even, more compliant with the POSIX
> definition of MONOTONIC...

Yes, that was the idea

> On that note, maybe it is still worth introducing MONOTONIC_ACTIVE,
> but just as an alias for MONOTONIC for now. It's also more
> self-documenting. Then sometime in the future, if people switch over,
> remove BOOTTIME and make MONOTONIC like BOOTTIME. Though this doesn't
> help simplify the code, I know.

It doesn't and it does not make applications magically make use of
MONOTONIC_ACTIVE. We're in a trap here.....

Thanks,

	tglx