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| Filename | Latest commit message | Latest commit date |
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6319aee10e
The OPP core requires the virtual device pointers to set performance
state on behalf of the device, for the multiple power domain case. The
genpd API (dev_pm_domain_attach_by_name()) has evolved now to support
even the single power domain case and that lets us add common code for
handling both the cases more efficiently.
The virtual device structure returned by dev_pm_domain_attach_by_name()
isn't normally used by the cpufreq drivers as they don't manage power
on/off of the domains and so is only useful for the OPP core.
This patch moves all the complexity into the OPP core to make the end
drivers simple. The earlier APIs dev_pm_opp_{set|put}_genpd_virt_dev()
are reworked into dev_pm_opp_{attach|detach}_genpd(). The new helper
dev_pm_opp_attach_genpd() accepts a NULL terminated array of strings
which contains names of all the genpd's to attach. It then attaches all
the domains and saves the pointers to the virtual devices. The other
helper undo the work done by this helper.
Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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| README | ||
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 Restructured Text 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.