linux-kernel - Re: /sys/devices/system/cpu/cpuX/online are missing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.64.0703122337350.25919@denise.shiny.it>
Date:	Mon, 12 Mar 2007 23:48:21 +0100 (CET)
From:	Giuliano Pochini <pochini@...ise.shiny.it>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: /sys/devices/system/cpu/cpuX/online are missing



On Mon, 12 Mar 2007, Heiko Carstens wrote:

> On Sun, Mar 11, 2007 at 10:26:52PM +0100, Giuliano Pochini wrote:
>>
>>
>> Since 2.6.20 /sys/devices/system/cpu/cpuX/online isn't there anymore. The
>> directories exist, though. I also tested linux-2.6.21rc3. I had a look at the
>> archives and I found nothing about the removal of that file, which is still
>> documented in Documentation/cpu-hotplug.txt. I don't know if other
>> architectures are affected.
>>
>> $ uname -a
>> Linux Jay 2.6.20 #1 SMP Mon Feb 5 22:42:18 CET 2007 ppc 7455, altivec supported PowerMac3,6 GNU/Linux
>>
>> No cpusets. CONFIG_HOTPLUG_CPU=y
>
> Somebody inverted the logic when and if the 'online' attribute for cpu devices
> appear. See 72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc.
> The fix for s390 is this: 6721f77810dfcb7cbf8e97be6fa43fe2740dd0aa.
> Looks like arch/ppc was left out as well.

I had a look at arch/powerpc/kernel/smp.c but I'm not familiar at all with 
those parts of the kernel. I'm cc'ing this message to linuxppc-dev.


--
Giuliano.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/