Nick Piggin wrote:
Andrew Morton wrote:
- If a piece of kernel code is dealing with per-cpu data and cannot run
atomically then it should have its own cpu hotplug handlers anyway. It
is up to that code (ie: cpufreq) to provide its own locking against its
own CPU hotplug callback.
This still does not solve this cpufreq problem where it is trying to
take the same lock twice down the same call path. Whether it is the
lock_cpu_hotplug mutex or another one, the code must be just busted.
s/twice down the same call path/inverted with another lock
SUSE Labs, Novell Inc.
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