From: Hullen@t-online.de (Helmut Hullen)
To: util-linux@vger.kernel.org
Subject: Re: detecting SMP CPU
Date: 07 Nov 2013 18:24:00 +0100 [thread overview]
Message-ID: <ChQYyP0eCXB@helmut.hullen.de> (raw)
In-Reply-To: <20131107114556.GB2853@x2.net.home>
Hallo, Karel,
Du meintest am 07.11.13:
>> I want to detect the existence of an SMP CPU (multi core CPU). I've
>> tried the contents of "/proc/cpuinfo" and the output of "lscpu".
[...]
>> Is there any way to detect a multi core CPU under a kernel which is
>> compiled with "SMP=n"?
> If you don't want to rely on kernel information than you probably
> have to use CPUID and some assembler magic to get CPU topology
> http://wiki.osdev.org/Detecting_CPU_Topology_(80x86)
> or maybe you can use CPU flags from /proc/cpuinfo (I guess the flags
> does not depend on SMP=y/n.
> It's probably better to ask at lkml :-)
Thank you - i'm still (re-)searching.
Viele Gruesse!
Helmut
prev parent reply other threads:[~2013-11-07 17:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 15:04 detecting SMP CPU Helmut Hullen
2013-11-07 11:45 ` Karel Zak
2013-11-07 17:24 ` Helmut Hullen [this message]
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