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f186b2dace
Remove the spinlock locking from intel_pstate_driver_cleanup() as it is not necessary because no other code accessing all_cpu_data[] can run in parallel with that function. Had the locking been necessary, though, it would have been incorrect because the lock in question is acquired from a hardirq handler and it cannot be acquired from thread context without disabling interrupts. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.