mirror of
https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
c752733d47
To save energy, CASS may prefer non-idle CPUs for uclamp-boosted tasks in order to pack them onto a single performance domain rather than spreading them across multiple performance domains. This way, it is more likely for only one performance domain to be boosted a higher P-state when there is more than one uclamp-boosted task running. However, when a task has a uclamp boost value that is below a CPU's minimum capacity, it is nearly the same thing as not having a uclamp boost at all. In spite of that, CASS may still prefer non-idle CPUs for tasks with bogus uclamp boost values. This is not only worse for latency, but also energy efficiency since the load on the CPU is spread less evenly as a result. Therefore, don't pack tasks with uclamp boosts below a CPU's minimum configured capacity, since such tasks do not force the CPU to run at a higher P-state. Change-Id: Ide8f62162723dc0c509fa5cccf92b8124f20f4aa Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com> Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>
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.