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A mirror of the official Linux kernel repository just in case
7f1d23e607
Add a new flag that will read kpagecount for each PFN and print out the number of times the page is mapped along with the flags in the listing view. This information is useful in understanding and optimizing memory usage. Identifying pages which are not shared allows us to focus on adjusting the memory layout or access patterns for the sole owning process. Knowing the number of processes that share a page tells us how many other times we must make the same adjustments or how many processes to potentially disable. Truncated sample output: voffset map-cnt offset len flags 561a3591e 1 15fe8 1 ___U_lA____Ma_b___________________________ 561a3591f 1 2b103 1 ___U_lA____Ma_b___________________________ 561a36ca4 1 2cc78 1 ___U_lA____Ma_b___________________________ 7f588bb4e 14 2273c 1 __RU_lA____M______________________________ [akpm@linux-foundation.org: coding-style fixes] [chansen3@cisco.com: add documentation, tweak whitespace] Link: http://lkml.kernel.org/r/20180705181204.5529-1-chansen3@cisco.com Link: http://lkml.kernel.org/r/20180612153205.12879-1-chansen3@cisco.com Signed-off-by: Christian Hansen <chansen3@cisco.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.
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.