From: Daniel Vetter Date: Thu, 30 Aug 2012 11:26:48 +0000 (+0200) Subject: drm/i915: add a tracepoint for gpu frequency changes X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~20^2~15^2~14 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be2cde9a6d922e5e43efd2ad39bc43ce70a5d79b;p=pandora-kernel.git drm/i915: add a tracepoint for gpu frequency changes We've had and still have too many issues where the gpu turbo doesn't quite to what it's supposed to do (or what we want it to do). Adding a tracepoint to track when the desired gpu frequency changes should help a lot in characterizing and understanding problematic workloads. Also, this should be fairly interesting for power tuning (and especially noticing when the gpu is stuck in high frequencies, as has happened in the past) and hence for integration into powertop and similar tools. Cc: Arjan van de Ven Reviewed-by: Chris Wilson Acked-by: Paul Menzel Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed