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From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 18/22] drm/i915: Use ww pinning for intel_context_create_request()
Date: Mon, 30 Mar 2020 16:09:21 +0200	[thread overview]
Message-ID: <20200330140925.3972034-18-maarten.lankhorst@linux.intel.com> (raw)
In-Reply-To: <20200330140925.3972034-1-maarten.lankhorst@linux.intel.com>

We want to get rid of intel_context_pin(), convert
intel_context_create_request() first. :)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_context.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c
index 5c7acddf9651..f70135685552 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -450,15 +450,25 @@ int intel_context_prepare_remote_request(struct intel_context *ce,
 
 struct i915_request *intel_context_create_request(struct intel_context *ce)
 {
+	struct i915_gem_ww_ctx ww;
 	struct i915_request *rq;
 	int err;
 
-	err = intel_context_pin(ce);
-	if (unlikely(err))
-		return ERR_PTR(err);
+	i915_gem_ww_ctx_init(&ww, true);
+retry:
+	err = intel_context_pin_ww(ce, &ww);
+	if (!err) {
+		rq = i915_request_create(ce);
+		intel_context_unpin(ce);
+	} else if (err == -EDEADLK) {
+		err = i915_gem_ww_ctx_backoff(&ww);
+		if (!err)
+			goto retry;
+	} else {
+		rq = ERR_PTR(err);
+	}
 
-	rq = i915_request_create(ce);
-	intel_context_unpin(ce);
+	i915_gem_ww_ctx_fini(&ww);
 
 	if (IS_ERR(rq))
 		return rq;
-- 
2.25.1

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  parent reply	other threads:[~2020-03-30 14:09 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-30 14:09 [Intel-gfx] [PATCH 01/22] Revert "drm/i915/gem: Drop relocation slowpath" Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] (For CI testing) [PATCH 02/22] perf/core: Only copy-to-user after completely unlocking all locks Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 03/22] drm/i915: Add an implementation for i915_gem_ww_ctx locking, v2 Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 04/22] drm/i915: Remove locking from i915_gem_object_prepare_read/write Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 05/22] drm/i915: Parse command buffer earlier in eb_relocate(slow) Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 06/22] drm/i915: Use per object locking in execbuf, v7 Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 07/22] drm/i915: Use ww locking in intel_renderstate Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 08/22] drm/i915: Add ww context handling to context_barrier_task Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 09/22] drm/i915: Nuke arguments to eb_pin_engine Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 10/22] drm/i915: Pin engine before pinning all objects, v3 Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 11/22] drm/i915: Rework intel_context pinning to do everything outside of pin_mutex Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 12/22] drm/i915: Make sure execbuffer always passes ww state to i915_vma_pin Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 13/22] drm/i915: Convert i915_gem_object/client_blt.c to use ww locking as well, v2 Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 14/22] drm/i915: Kill last user of intel_context_create_request outside of selftests Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 15/22] drm/i915: Convert i915_perf to ww locking as well Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 16/22] drm/i915: Dirty hack to fix selftests locking inversion Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 17/22] drm/i915/selftests: Fix locking inversion in lrc selftest Maarten Lankhorst
2020-03-30 14:09 ` Maarten Lankhorst [this message]
2020-03-30 14:09 ` [Intel-gfx] [PATCH 19/22] drm/i915: Move i915_vma_lock in the selftests to avoid lock inversion, v2 Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 20/22] drm/i915: Add ww locking to vm_fault_gtt Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 21/22] drm/i915: Add ww locking to pin_to_display_plane Maarten Lankhorst
2020-03-30 14:09 ` [Intel-gfx] [PATCH 22/22] drm/i915: Ensure we hold the pin mutex Maarten Lankhorst
  -- strict thread matches above, loose matches on Subject: below --
2020-03-30 14:35 [Intel-gfx] [PATCH 01/22] Revert "drm/i915/gem: Drop relocation slowpath" Maarten Lankhorst
2020-03-30 14:35 ` [Intel-gfx] [PATCH 18/22] drm/i915: Use ww pinning for intel_context_create_request() Maarten Lankhorst

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