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If userspace asked for a timeout greater than zero, but less than a jiffy, they clearly weren't planning on spinning. So it is better to round up to one. This fixes an issue with supertuxkart that was (for some reason) spinning on a gl sync with 1ms timeout. CPU time for a demo lap drops from: 15.83user 20.98system 0:47.46elapsed 77%CPU drops to: 8.84user 2.30system 0:46.67elapsed 23%CPU Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/528725/ Link: https://lore.kernel.org/r/20230324220013.191795-1-robdclark@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> |
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