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kthread usually runs jobs on behalf of other threads. The jobs should be charged to cgroup of original threads. But the jobs run in a kthread, where we lose the cgroup context of original threads. The patch adds a machanism to record cgroup info of original threads in kthread context. Later we can retrieve the cgroup info and attach the cgroup info to jobs. Since this mechanism is only required by kthread, we store the cgroup info in kthread data instead of generic task_struct. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| README | ||
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.