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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: "Ingo Molnar" <mingo@kernel.org>,
	"Borislav Petkov" <bp@alien8.de>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] printk: Add kernel parameter to control writes to /dev/kmsg
Date: Wed, 15 Jun 2016 15:40:04 -1000	[thread overview]
Message-ID: <CA+55aFxLcTr6AB9p82EQeRJLTkMksUcDNzimdmzVcDKdpR8tXg@mail.gmail.com> (raw)
In-Reply-To: <20160614141456.6876b069@grimm.local.home>

On Tue, Jun 14, 2016 at 8:14 AM, Steven Rostedt <rostedt@goodmis.org> wrote:
>>
>> Please also add a sysctl!
>>
>> I *so* want to enable this on distro kernels without having to reboot the
>> kernel...
>>
>
> But can we make it a one way feature (or a kernel parameter to do so?)
> that will prevent userspace from enabling it after it's been disabled.

Possibly we could just say that if a kernel command line option has
been given, that is absolute.

And then a sysctl for when you do *not* explicitly set if on the
kernel command line?

             Linus

  parent reply	other threads:[~2016-06-16  1:40 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-14 10:12 [PATCH 0/2] printk.kmsg: Ratelimit it by default Borislav Petkov
2016-06-14 10:12 ` [PATCH 1/2] ratelimit: Extend to print suppressed messages on release Borislav Petkov
2016-06-14 10:12 ` [PATCH 2/2] printk: Add kernel parameter to control writes to /dev/kmsg Borislav Petkov
2016-06-14 10:21   ` Ingo Molnar
2016-06-14 18:14     ` Steven Rostedt
2016-06-14 18:30       ` Borislav Petkov
2016-06-16  1:40       ` Linus Torvalds [this message]
2016-06-16  9:51         ` Borislav Petkov
2016-06-16  1:41 ` [PATCH 0/2] printk.kmsg: Ratelimit it by default Linus Torvalds

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