From: Petr Tesarik <ptesarik@suse.cz>
To: kexec@lists.infradead.org
Subject: Re: [PATCH] print kdump kernel loaded status in stack dump
Date: Fri, 19 Jan 2018 14:06:58 +0100 [thread overview]
Message-ID: <20180119140658.2137904e@ezekiel.suse.cz> (raw)
In-Reply-To: <20180119044719.GA3985@dhcp-128-65.nay.redhat.com>
On Fri, 19 Jan 2018 12:47:19 +0800
Dave Young <dyoung@redhat.com> wrote:
> On 01/18/18 at 01:57pm, Steven Rostedt wrote:
> > On Thu, 18 Jan 2018 10:02:17 -0800
> > Andi Kleen <ak@linux.intel.com> wrote:
> >
> > > Dave Young <dyoung@redhat.com> writes:
> > > > printk("%sHardware name: %s\n",
> > > > log_lvl, dump_stack_arch_desc_str);
> > > > + if (kexec_crash_loaded())
> > > > + printk("%skdump kernel loaded\n", log_lvl);
> > >
> > > Oops/warnings are getting longer and longer, often scrolling away
> > > from the screen, and if the kernel crashes backscroll does not work
> > > anymore, so precious information is lost.
> > >
> > > Can you merge it with some other line?
> > >
> > > Just a [KDUMP] or so somewhere should be good enough.
> >
> > Or perhaps we should add it as a TAINT. Not all taints are bad.
>
> Hmm, I also thought about this before but It sounds like not match the
> "tainted" meaning with the assumption that it is bad :(
Not only that. Once set, taint flags are not supposed to go away, but
it is perfectly fine to unload a panic kernel.
Petr T
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next prev parent reply other threads:[~2018-01-19 13:07 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-17 4:50 [PATCH] print kdump kernel loaded status in stack dump Dave Young
2018-01-17 8:57 ` Petr Mladek
2018-01-17 12:32 ` Dave Young
2018-01-17 13:42 ` Petr Mladek
2018-01-17 15:48 ` Steven Rostedt
2018-01-18 1:57 ` Dave Young
2018-01-18 18:02 ` Andi Kleen
2018-01-18 18:57 ` Steven Rostedt
2018-01-19 4:47 ` Dave Young
2018-01-19 13:06 ` Petr Tesarik [this message]
2018-01-26 7:37 ` Dave Young
2018-01-26 12:17 ` Petr Mladek
2018-01-27 3:57 ` Dave Young
2018-01-19 5:45 ` Sergey Senozhatsky
2018-01-19 8:16 ` Dave Young
2018-01-19 8:28 ` Sergey Senozhatsky
2018-01-19 8:42 ` Dave Young
2018-01-19 9:46 ` Sergey Senozhatsky
2018-01-19 8:32 ` Sergey Senozhatsky
2018-01-19 16:16 ` Andi Kleen
2018-01-19 16:51 ` Petr Tesarik
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