From: Dave Hansen <dave.hansen@intel.com>
To: Stephen Rothwell <sfr@canb.auug.org.au>,
LKML <linux-kernel@vger.kernel.org>
Subject: cpu hotplug broken in linux-next
Date: Tue, 28 May 2013 17:34:25 -0700 [thread overview]
Message-ID: <51A54D11.4050407@intel.com> (raw)
If I boot with: maxcpus=2 possible_cpus=4
I get
# grep . /sys/devices/system/cpu/cpu[0-9]*/online'
/sys/devices/system/cpu/cpu1/online:1
/sys/devices/system/cpu/cpu2/online:1
/sys/devices/system/cpu/cpu3/online:1
When 2 and 3 *should* be offline. I also get -EINVAL if I try to
re-offline them in this state. 2 and 3 don't show up in /proc/cpuinfo,
so sysfs just looks broken here.
I'm bisecting it at the moment, but won't get to finish until tomorrow.
Just thought I'd report early and often. :)
reply other threads:[~2013-05-29 0:34 UTC|newest]
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