Kernel for Galaxy S24, rebased on CLO sources (WIP)
0bba9af03d
Remove an expensive and unnecessary operation as PCP pages are safely skipped when reading page owner.PCP pages can be skipped because PAGE_EXT_OWNER_ALLOCATED is cleared. With draining PCP pages, these pages are moved to buddy list so they can be identified as buddy pages and skipped quickly. Although it improved efficiency of PFN walker, the drain is guaranteed expensive that is unlikely to be offset by a slight increase in efficiency when skipping free pages. PAGE_EXT_OWNER_ALLOCATED is cleared in the page owner reset path below: free_unref_page -> free_unref_page_prepare -> free_pcp_prepare -> free_pages_prepare which do page owner reset -> free_unref_page_commit which add pages into pcp list Link: https://lkml.kernel.org/r/1662704326-15899-1-git-send-email-quic_zhenhuah@quicinc.com Link: https://lkml.kernel.org/r/1662633204-10044-1-git-send-email-quic_zhenhuah@quicinc.com Link: https://lkml.kernel.org/r/1662537673-9392-1-git-send-email-quic_zhenhuah@quicinc.com Signed-off-by: Zhenhua Huang <quic_zhenhuah@quicinc.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| 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.
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.