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[RFC,1/2] drm/i915: Store LRC hardware id in the request

Message ID 1461162297-36694-1-git-send-email-tvrtko.ursulin@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Tvrtko Ursulin April 20, 2016, 2:24 p.m. UTC
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

This way in the following patch we can disconnect requests
from contexts.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h  | 2 ++
 drivers/gpu/drm/i915/intel_lrc.c | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

Comments

Chris Wilson April 20, 2016, 6:15 p.m. UTC | #1
On Wed, Apr 20, 2016 at 03:24:56PM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> This way in the following patch we can disconnect requests
> from contexts.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h  | 2 ++
>  drivers/gpu/drm/i915/intel_lrc.c | 3 ++-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index be98e9643072..c680dcdad828 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2349,6 +2349,8 @@ struct drm_i915_gem_request {
>  	/** Execlists no. of times this request has been sent to the ELSP */
>  	int elsp_submitted;
>  
> +	/** Execlists context hardware id. */
> +	unsigned ctx_hw_id;

I'm cringing because this add yet another execlists specific variable
that we can avoid... However, I have to admit that it is a simpler step
toward the same goal.
-Chris
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index be98e9643072..c680dcdad828 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2349,6 +2349,8 @@  struct drm_i915_gem_request {
 	/** Execlists no. of times this request has been sent to the ELSP */
 	int elsp_submitted;
 
+	/** Execlists context hardware id. */
+	unsigned ctx_hw_id;
 };
 
 struct drm_i915_gem_request * __must_check
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 67c369ae649b..833d8fd3343f 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -477,7 +477,7 @@  execlists_check_remove_request(struct intel_engine_cs *engine, u32 request_id)
 	if (!head_req)
 		return 0;
 
-	if (unlikely(head_req->ctx->hw_id != request_id))
+	if (unlikely(head_req->ctx_hw_id != request_id))
 		return 0;
 
 	WARN(head_req->elsp_submitted == 0, "Never submitted head request\n");
@@ -615,6 +615,7 @@  static void execlists_context_queue(struct drm_i915_gem_request *request)
 	}
 
 	list_add_tail(&request->execlist_link, &engine->execlist_queue);
+	request->ctx_hw_id = request->ctx->hw_id;
 	if (num_elements == 0)
 		execlists_context_unqueue(engine);