linux-kernel - Re: Removing Mandatory Locks

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Message-ID: <CAHk-=wi5xeN3fxfjqZu9HjhiMKfMJDeqniDU+S_ZigTG0uo3iA@mail.gmail.com>
Date:   Fri, 20 Aug 2021 09:06:40 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Jeff Layton <jlayton@...nel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Matthew Wilcox <willy@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        David Laight <David.Laight@...lab.com>,
        David Hildenbrand <david@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Alexey Dobriyan <adobriyan@...il.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
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        Chengguang Xu <cgxu519@...ernel.net>,
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        Linux-MM <linux-mm@...ck.org>,
        Florian Weimer <fweimer@...hat.com>,
        Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: Removing Mandatory Locks

On Fri, Aug 20, 2021 at 6:43 AM Steven Rostedt <rostedt@...dmis.org> wrote:
>
> On Thu, 19 Aug 2021 15:32:31 -0700
> Linus Torvalds <torvalds@...ux-foundation.org> wrote:
> >
> > I don't know if distros have some pattern we could use that would end
> > up being something that gets reported to the user?
>
> People have started using my trace-printk notice message, that seems to
> be big enough to get noticed.

Well, I think people who use ftrace are m,ore likely to look at kernel
messages than most...

So what would be more interesting is if there's some distro support
for showing kernel notifications..

I see new notifications for calendar events, for devices that got
mounted, for a lot of things - so I'm really wondering if somebody
already perhaps had something for specially formatted kernel
messages..

               Linus