diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-08 20:40:26 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2021-01-08 21:35:57 +0000 |
| commit | 9b3a8f558ddf8bd406b89698bc62cbaabe098b68 (patch) | |
| tree | 5f87db1d1157178fd6098224cfd1602eb3804c73 /drivers/gpu/drm/i915/gt/gen8_engine_cs.c | |
| parent | 751f82b353a6bacde791be29812b0018fddc35a6 (diff) | |
drm/i915/gt: Disable arbitration on no-preempt requests
If a request is submitted and known to require no preemption, disable
arbitration around the batch which prevents the HW from handling a
preemption request during the payload.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210108204026.20682-7-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/gen8_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c index 1972dd5dca00..2e36e0a9d8a6 100644 --- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c @@ -427,6 +427,9 @@ int gen8_emit_bb_start(struct i915_request *rq, { u32 *cs; + if (unlikely(i915_request_has_nopreempt(rq))) + return gen8_emit_bb_start_noarb(rq, offset, len, flags); + cs = intel_ring_begin(rq, 6); if (IS_ERR(cs)) return PTR_ERR(cs); |