linux-kernel - Re: [PATCH V1 resend] dcookies: Make dcookies depend on CONFIG

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Date:   Mon, 11 Jan 2021 11:28:25 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>, Christoph Hellwig <hch@....de>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V1 resend] dcookies: Make dcookies depend on CONFIG_OPROFILE

On Sun, Jan 10, 2021 at 10:02 PM Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> From: Arnd Bergmann <arnd@...db.de>
>
> The dcookies stuff is used only with OPROFILE and there is no need to
> build it if CONFIG_OPROFILE isn't enabled. Build it depending on
> CONFIG_OPROFILE instead of CONFIG_PROFILING.

Umm. I think we should remove CONFIG_OPROFILE entirely, and then
dcookies as part of it.

We discussed removing CONFIG_OPROFILE for 5.9 (I htink) already - the
oprofile user land tools don't use the kernel OPROFILE support any
more, and haven't in a long time. User land has been converted to the
perf interfaces.

             Linus