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drm/i915: Drop i915_request.i915 backpointer

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We infrequently use the direct i915 backpointer from the i915_request,
so do we really need to waste the space in the struct for it? 8 bytes
from the most frequently allocated struct vs an 3 bytes and pointer
chasing in using rq->engine->i915?

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200602220953.21178-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2020-06-02 23:09:53 +01:00
parent 6783ebda63
commit 5a83399536
17 changed files with 43 additions and 49 deletions
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3
drivers/gpu/drm/i915/i915_request.h
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@@ -162,9 +162,6 @@ struct i915_request {
struct dma_fence fence;
spinlock_t lock;
/** On Which ring this request was generated */
struct drm_i915_private *i915;
/**
* Context and ring buffer related to this request
* Contexts are refcounted, so when this request is associated with a