[Bug 33512] radeon: lots of time spent in atombios_crtc_disable

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=33512





--- Comment #2 from Michel Dänzer <michel at daenzer.net>  2011-08-05 07:25:50 ---
My best guess is that it's page flipping related, but it would be good to
confirm that, e.g. by somehow triggering a backtrace from
atombios_crtc_disable.

It might also be interesting to add some debugging output to
atombios_crtc_disable to narrow down where it's spending so much time. But if
my assumption turns out to be true that it keeps getting called on page flips,
we might just need to somehow no-op repeated calls.

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