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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-07 20:21:19 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-07 20:21:19 +0400 |
commit | 4293f20c19f44ca66e5ac836b411d25e14b9f185 (patch) | |
tree | 4f9ab09ca1f775907af2a78ebb8754b945570d39 /Documentation/input/elantech.txt | |
parent | dac12d1f5ef228e132c2457dc214e0703533b016 (diff) | |
download | linux-4293f20c19f44ca66e5ac836b411d25e14b9f185.tar.xz |
Revert "CPU hotplug, cpusets, suspend: Don't touch cpusets during suspend/resume"
This reverts commit 8f2f748b0656257153bcf0941df8d6060acc5ca6.
It causes some odd regression that we have not figured out, and it's too
late in the -rc series to try to figure it out now.
As reported by Konstantin Khlebnikov, it causes consistent hangs on his
laptop (Thinkpad x220: 2x cores + HT). They can be avoided by adding
calls to "rebuild_sched_domains();" in cpuset_cpu_[in]active() for the
CPU_{ONLINE/DOWN_FAILED/DOWN_PREPARE}_FROZEN cases, but it's not at all
clear why, and it makes no sense.
Konstantin's config doesn't even have CONFIG_CPUSETS enabled, just to
make things even more interesting. So it's not the cpusets, it's just
the scheduling domains.
So until this is understood, revert.
Bisected-reported-and-tested-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/input/elantech.txt')
0 files changed, 0 insertions, 0 deletions