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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 11:33:08 +0200 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-05-04 12:54:43 +0200 |
| commit | 266a240bf0abf1e00e72e571f3724ec753a35f19 (patch) | |
| tree | 9420a39973e08d49658dcfd958c816a33abf5c3e /drivers/gpu/drm/i915/i915_perf.c | |
| parent | drm/i915: Implement dma_buf_ops->kmap (diff) | |
| download | linux-266a240bf0abf1e00e72e571f3724ec753a35f19.tar.xz linux-266a240bf0abf1e00e72e571f3724ec753a35f19.zip | |
drm/i915: Use engine->context_pin() to report the intel_ring
Since unifying ringbuffer/execlist submission to use
engine->pin_context, we ensure that the intel_ring is available before
we start constructing the request. We can therefore move the assignment
of the request->ring to the central i915_gem_request_alloc() and not
require it in every engine->request_alloc() callback. Another small step
towards simplification (of the core, but at a cost of handling error
pointers in less important callers of engine->pin_context).
v2: Rearrange a few branches to reduce impact of PTR_ERR() on gcc's code
generation.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Oscar Mateo <oscar.mateo@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170504093308.4137-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_perf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_perf.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 060b171480d5..cdac68580cb1 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -744,6 +744,7 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) { struct drm_i915_private *dev_priv = stream->dev_priv; struct intel_engine_cs *engine = dev_priv->engine[RCS]; + struct intel_ring *ring; int ret; ret = i915_mutex_lock_interruptible(&dev_priv->drm); @@ -755,9 +756,10 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) * * NB: implied RCS engine... */ - ret = engine->context_pin(engine, stream->ctx); - if (ret) - goto unlock; + ring = engine->context_pin(engine, stream->ctx); + mutex_unlock(&dev_priv->drm.struct_mutex); + if (IS_ERR(ring)) + return PTR_ERR(ring); /* Explicitly track the ID (instead of calling i915_ggtt_offset() * on the fly) considering the difference with gen8+ and @@ -766,10 +768,7 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) dev_priv->perf.oa.specific_ctx_id = i915_ggtt_offset(stream->ctx->engine[engine->id].state); -unlock: - mutex_unlock(&dev_priv->drm.struct_mutex); - - return ret; + return 0; } /** |