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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 14:08:46 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 15:40:38 +0100 |
| commit | 5e5655c32de83a0151de0c4993d7783c22b6f9b4 (patch) | |
| tree | 3436e783ba56065ce254fc3ac3c4de9582fab0be /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915: Report the ring->space from intel_ring_update_space() (diff) | |
| download | linux-dev-5e5655c32de83a0151de0c4993d7783c22b6f9b4.tar.xz linux-dev-5e5655c32de83a0151de0c4993d7783c22b6f9b4.zip | |
drm/i915: Micro-optimise hotpath through intel_ring_begin()
Typically, there is space available within the ring and if not we have
to wait (by definition a slow path). Rearrange the code to reduce the
number of branches and stack size for the hotpath, accomodating a slight
growth for the wait.
v2: Fix the new assert that packets are not larger than the actual ring.
v3: Make the parameters unsigned as well to make usage.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170504130846.4807-3-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
0 files changed, 0 insertions, 0 deletions