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27d2afa3b4
The IRQ return value of irq_find_mapping() is only tested for existence, not used for anything else. So, this call can be replaced by a slightly simpler irq_resolve_mapping() call, which reduces generated code size a bit (x86-64 allmodconfig): text data bss dec hex filename 82142 38633 18048 138823 21e47 arch/x86/kernel/apic/io_apic.o.before 81932 38633 18048 138613 21d75 arch/x86/kernel/apic/io_apic.o.after [ mingo: Fixed & simplified the changelog ] Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kernel-janitors@vger.kernel.org Link: https://patch.msgid.link/cb3a4968538637aac3a5ae4f5ecc4f5eb43376ea.1760861877.git.christophe.jaillet@wanadoo.fr |
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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.