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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-04 07:52:39 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-04 08:09:28 +0100 |
| commit | 37db14700e995aa7b74e09b2a1bfe786f0db0121 (patch) | |
| tree | f49b1f073dc374e8cda5da35db6ef77ddf26d911 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | 7da844c5c6fcb7a3575dd20701b481fe86918ab0 (diff) | |
| download | op-kernel-dev-37db14700e995aa7b74e09b2a1bfe786f0db0121.zip op-kernel-dev-37db14700e995aa7b74e09b2a1bfe786f0db0121.tar.gz | |
drm/i915: Disable waitboosting for a saturated engine
If the user floods the GPU with so many requests that the engine stalls
waiting for free space, don't automatically promote the GPU to maximum
frequencies. If the GPU really is saturated with work, it will migrate
to high clocks by itself, otherwise it is merely a user flooding us with
busy-work.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470293567-10811-20-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 542cf58..4ab6d23 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2299,7 +2299,7 @@ static int wait_for_space(struct drm_i915_gem_request *req, int bytes) if (WARN_ON(&target->ring_link == &ring->request_list)) return -ENOSPC; - ret = __i915_wait_request(target, true, NULL, NULL); + ret = __i915_wait_request(target, true, NULL, NO_WAITBOOST); if (ret) return ret; |
