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drm/i915: Drop request retirement before reaping stale contexts

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Before we create a new context, we try and reap all the stale contexts
(i.e. those that are freed but waiting for a worker to come and return
their allocations to the system). Before we do this, we retire all
requests so that we clear any inflight no longer used contexts (who are
only being kept alived by those inflght requests). However, any context
that is finally unreferenced by this retirement is put onto an RCU list
and not available for immediately reaping, we stall for no immediate
benefit.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170705142634.18554-3-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Chris Wilson 2017-07-05 15:26:33 +01:00
parent ddfc925851
commit 6b6573d114
1 changed files with 0 additions and 1 deletions
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drivers/gpu/drm/i915/i915_gem_context.c
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@ -384,7 +384,6 @@ i915_gem_create_context(struct drm_i915_private *dev_priv,
lockdep_assert_held(&dev_priv->drm.struct_mutex);
/* Reap stale contexts */
i915_gem_retire_requests(dev_priv);
contexts_free(dev_priv);
ctx = __create_hw_context(dev_priv, file_priv);