drm/nv50/gr: enable ctxprog xfer only when we need it to save power

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This patch adds instructions to ctxprog and by doing, impacts context
switching performance.  My testcase showed a 1% performance cost using
glxgears that is a context-switch bound application.

Please test and report bugs/performance/power/other.

Many thanks to Maxim Levitsky for his dedicated work on lowering power
consumption with nouveau.

More patches are coming thanks to his work:

https://bugs.freedesktop.org/show_bug.cgi?id=37922

Signed-off-by: Martin Peres <martin.peres@ensi-bourges.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Martin Peres 2011-07-30 23:08:45 +02:00 • committed by Ben Skeggs

parent c16a3a358b

commit fbba036a56

1 changed files with 5 additions and 0 deletions

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drivers/gpu/drm/nouveau/nv50_grctx.c

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