linux-kernel - Re: [PATCH 6/8] SGI x86_64 UV: Limit the number of microcode messages

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Message-ID: <Pine.LNX.4.61.0910242207180.2439@ginsburg.homenet>
Date:	Sat, 24 Oct 2009 22:09:06 +0100 (BST)
From:	Tigran Aivazian <tigran@...azian.fsnet.co.uk>
To:	Dmitry Adamushko <dmitry.adamushko@...il.com>
cc:	Mike Travis <travis@....com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Andreas Mohr <andi@...as.de>, Hugh Dickins <hugh@...itas.com>,
	Hannes Eder <hannes@...neseder.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] SGI x86_64 UV: Limit the number of microcode messages

On Sat, 24 Oct 2009, Dmitry Adamushko wrote:
>> -       printk(KERN_INFO "microcode: CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n",
>> +       if (cpu_num < 4 || !limit_console_output(false))
>> +               printk(KERN_INFO
>> +                       "microcode: CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n",
>>                        cpu_num, csig->sig, csig->pf, csig->rev);
>>
>
> Hmm, I guess we wouldn't lose a lot by simply removing those messages
> completely. Per-cpu pf/revision is available via /sys anyway.

The reason for printing them is that the pf (possibly others?) can change 
by the update and so the log has this info handy.

Kind regards
Tigran