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235d3e4fa1
Like with the drm-native vblank wait ioctl we can entirely rely on the spinlocks in drm_vblank.c, no need at all to take expensive mutexes. The only reason we had to take mode_config.mutex was to protect the fbdev helper's data-structures, but that's now done by fb_helper->lock. Cc: John Stultz <john.stultz@linaro.org> Cc: Thierry Reding <treding@nvidia.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170704151833.17304-6-daniel.vetter@ffwll.ch |
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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.