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| author | Brian Norris <computersforpeace@gmail.com> | 2014-12-16 19:13:50 -0800 |
|---|---|---|
| committer | Florian Fainelli <f.fainelli@gmail.com> | 2015-01-12 14:59:29 -0800 |
| commit | a1ad3b94a7661b643fef2efbc6fc217bd148f462 (patch) | |
| tree | a4521ca95d0be701ab8ee4c92d5e0bcbaa0e1414 /tools/perf/scripts/python/sctop.py | |
| parent | 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff) | |
ARM: brcmstb: update CPU power management sequence
The automatic CPU power state machine for B15 CPUs does not work
reliably as-is. This patch implements a manual sequence in software to
replace it.
This was tested successfully with over 10,000 hotplug cycles of
something like this:
echo 0 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu1/online
whereas the existing sequence often locks up after a few hundred cycles.
Fixes: 62639c2f5332 ("ARM: brcmstb: reintroduce SMP support")
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/sctop.py')
0 files changed, 0 insertions, 0 deletions