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In order to complete a commit, we must first wait for the previous commit to finish up. This is done by sleeping, during which time the CPU can enter a deep idle state and take a while to finish processing the commit after the wait is over. We can alleviate this by optimistically assuming that the kthread this commit worker is running on won't migrate to another CPU partway through. We only do this for the non-blocking case where the commit completion is done in an asynchronous worker because the generic DRM code already does this for atomic ioctls. Change-Id: I55b822211b91f4a31c2bc6e65d7b31989e56aa7d Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com> Signed-off-by: Adithya R <gh0strider.2k18.reborn@gmail.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.