0a53bc07f0
Currently i915 request structure and shadow ring buffer are allocated before command scan, so it will have to restore to previous states once any error happens afterwards in the long dispatch_workload path. This patch is to introduce a reserved ring buffer created at the beginning of vGPU initialization. Workload will be coped to this reserved buffer and be scanned first, the i915 request and shadow ring buffer are only allocated after the result of scan is successful. To balance the memory usage and buffer alloc time, the coming bigger ring buffer will be reallocated and kept until more bigger buffer is coming. v2: - use kmalloc for the smaller ring buffer, realloc if required. (Zhenyu) v3: - remove the dynamically allocated ring buffer. (Zhenyu) v4: - code style polish. - kfree previous allocated buffer once kmalloc failed. (Zhenyu) Signed-off-by: fred gao <fred.gao@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> |
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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.