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__const_udelay is marked inline, and LTO will happily inline it everywhere Dropping the inline saves ~44k text in a LTO build. 13999560 1740864 1499136 17239560 1070e08 vmlinux-with-udelay-inline 13954764 1736768 1499136 17190668 1064f0c vmlinux-wo-udelay-inline Inlining it has no advantage in general, so its the right thing to do. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20171222001821.2157-2-andi@firstfloor.org
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.