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Linux kernel source tree
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Around 95% of memory is reserved by fadump/capture kernel. All this memory is freed, one page at a time, on writing '1' to the node /sys/kernel/fadump_release_mem. On systems with large memory, this can take a long time to complete, leading to soft lockup warning messages. To avoid this, add reschedule points at regular intervals. Also, while memblock_reserve() implicitly takes care of holes in the given memory range while reserving memory, those holes need to be taken care of while releasing memory as memory is freed one page at a time. Add support to skip holes while releasing memory. Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> |
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| README | ||
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.