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Message-ID: <4CBDB3B0.8080605@linux.intel.com>
Date: Tue, 19 Oct 2010 17:05:20 +0200
From: Andi Kleen <ak@linux.intel.com>
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To: Andreas Schwab <schwab@redhat.com>
CC: Amerigo Wang <amwang@redhat.com>, linux-kernel@vger.kernel.org,
        Randy Dunlap <rdunlap@xenotime.net>,
        Mauro Carvalho Chehab <mchehab@redhat.com>,
        Len Brown <len.brown@intel.com>, Ingo Molnar <mingo@elte.hu>,
        Andrew Morton <akpm@linux-foundation.org>,
        David Howells <dhowells@redhat.com>, Eric Paris <eparis@redhat.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Eric Dumazet <eric.dumazet@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Andy Shevchenko <ext-andriy.shevchenko@nokia.com>,
        linux-doc@vger.kernel.org
Subject: Re: [PATCH 2/2] sysctl: remove sysctl syscall
References: <1287476560-5874-1-git-send-email-amwang@redhat.com>	<1287476560-5874-2-git-send-email-amwang@redhat.com>	<4CBD9B7F.6040307@linux.intel.com> <m3lj5uff3h.fsf@hase.home>
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  On 10/19/2010 4:10 PM, Andreas Schwab wrote:
>>   On 10/19/2010 10:22 AM, Amerigo Wang wrote:
>>> Remove the obsolete sysctl syscall. It was scheduled
>>> to be removed in Sept.
>>
>> I thought at least older glibc was still using it? Did anyone check
>> what happens if it sees no sysctl(2)?
> It will fall back reading from /proc/sys.

First that's slow (but ok), but that will fail if there is no /proc.

-Andi