huangzq2
347882f665
We often see lost ram is still very high even we close the camera app. That's because camera's ion memory goes into ion cache after use, not buddy system. And this cache was not counted in proc/meminfo/memAvailable, so it can not reflect the true memAvailable in this state. It may affects some components l(CR) camera or lmkd which need evaluate true memAvailable in system. Take camera as example, while launching camera, camera app needs calcuate the available memory then call framework api to kill processes, without this patch, we will see overkill. This patch is only for 4.14 & 4.19, on kernel 5.4, ion cache will be counted in memAvailable, so memAvailable is always trustable. Change-Id: I4a9678530d387bd8da404d797f7d6e33bd258ac4 Signed-off-by: huangzq2 <huangzq2@motorola.com> Reviewed-on: https://gerrit.mot.com/1792299 SLTApproved: Slta Waiver SME-Granted: SME Approvals Granted Tested-by: Jira Key Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com> Submit-Approved: Jira Key (cherry picked from commit a9acaa732c7fcb5e9ec9eea08bb6bb390c316722) Reviewed-on: https://gerrit.mot.com/1795665
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.