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In order to support performance counters in a sane way we need to provide a method to sync the GPU with the CPU. The GPU can process multpile command buffers/events per irq. With the help of a 'sync point' we can trigger an event and stop the GPU/FE immediately. When the CPU is done with is processing it simply needs to restart the FE and the GPU will process the command stream. Changes from v1 -> v2: - process sync point with a work item to keep irq as fast as possible Changes from v4 -> v5: - renamed pmrs_* to sync_point_* - call event_free(..) in sync_point_worker(..) Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> |
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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.