linux-kernel - Re: [Ksummit-2010-discuss] [v2] Remaining BKL users, what to do

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Date:	Wed, 3 Nov 2010 08:58:56 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Arnd Bergmann <arnd@...db.de>, Greg KH <greg@...ah.com>,
	Oliver Neukum <oliver@...kum.org>, Valdis.Kletnieks@...edu,
	Dave Airlie <airlied@...il.com>,
	codalist@...emann.coda.cs.cmu.edu,
	ksummit-2010-discuss@...ts.linux-foundation.org,
	autofs@...ux.kernel.org, Jan Harkes <jaharkes@...cmu.edu>,
	Samuel Ortiz <samuel@...tiz.org>, Jan Kara <jack@...e.cz>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	netdev@...r.kernel.org, Anders Larsen <al@...rsen.net>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	Bryan Schumaker <bjschuma@...app.com>,
	Christoph Hellwig <hch@...radead.org>,
	Petr Vandrovec <vandrove@...cvut.cz>,
	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
	linux-fsdevel@...r.kernel.org,
	Evgeniy Dushistov <dushistov@...l.ru>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Hendry <andrew.hendry@...il.com>,
	linux-media@...r.kernel.org
Subject: Re: [Ksummit-2010-discuss] [v2] Remaining BKL users, what to do

On Tue, Nov 2, 2010 at 3:21 AM, Pavel Machek <pavel@....cz> wrote:
> Hi!
>
>> @@ -79,6 +79,10 @@ static struct drm_driver driver = {
>>
>>  static int __init i810_init(void)
>>  {
>> +     if (num_present_cpus() > 1) {
>> +             pr_err("drm/i810 does not support SMP\n");
>> +             return -EINVAL;
>> +     }
>>       driver.num_ioctls = i810_max_ioctl;
>>       return drm_init(&driver);
>
> Umm, and now someone onlines second cpu?

Well, I see it's being fixed in a different way but yeah,
num_possible_cpus() would be more appropriate here.
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