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drm/i915/gt: Teach veng to defer the context allocation

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Since we added the context_alloc callback to intel_context_ops, we can
safely install a custom hook for the deferred virtual context allocation.
This means that all new contexts behave the same upon creation,
simplifying later code.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191219232932.189197-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-12-19 23:29:32 +00:00
parent 7d1ff0d9fa
commit d5e1935381
1 changed files with 9 additions and 6 deletions
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15
drivers/gpu/drm/i915/gt/intel_lrc.c
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@ -4240,6 +4240,13 @@ static void virtual_engine_initial_hint(struct virtual_engine *ve)
ve->siblings[0]);
}
static int virtual_context_alloc(struct intel_context *ce)
{
struct virtual_engine *ve = container_of(ce, typeof(*ve), context);
return __execlists_context_alloc(ce, ve->siblings[0]);
}
static int virtual_context_pin(struct intel_context *ce)
{
struct virtual_engine *ve = container_of(ce, typeof(*ve), context);
@ -4277,6 +4284,8 @@ static void virtual_context_exit(struct intel_context *ce)
}
static const struct intel_context_ops virtual_context_ops = {
.alloc = virtual_context_alloc,
.pin = virtual_context_pin,
.unpin = execlists_context_unpin,
@ -4593,12 +4602,6 @@ intel_execlists_create_virtual(struct i915_gem_context *ctx,
ve->base.flags |= I915_ENGINE_IS_VIRTUAL;
err = __execlists_context_alloc(&ve->context, siblings[0]);
if (err)
goto err_put;
__set_bit(CONTEXT_ALLOC_BIT, &ve->context.flags);
return &ve->context;
err_put: