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irq_domain_create_simple() and irq_domain_create_legacy() use __irq_domain_instantiate(), but have extra handling of allocating interrupt descriptors and associating interrupts in them. Some of that is duplicated. There are also call sites which have conditonals to invoke different interrupt domain creator functions, where one of them is usually irq_domain_create_legacy(). Alternatively they associate the interrupts for the legacy case after creating the domain. Moving the extra logic of irq_domain_create_simple()/legacy() into __irq_domain_instantiate() allows to consolidate that. Introduce hwirq_base and virq_base members in the irq_domain_info structure, which allows to transport the required information and add the conditional interrupt descriptor allocation and interrupt association into __irq_domain_instantiate(). This reduces irq_domain_create_legacy() and irq_domain_create_simple() to trivial wrappers which fill in the info structure and allows call sites which must support the legacy case along with more modern mechanism to select the domain type via the parameters of the info struct. [ tglx: Massaged change log ] Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/32d07bd79eb2b5416e24da9e9e8fe5955423dcf9.1723120028.git.mazziesaccount@gmail.com |
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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.