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From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 14/25] drm/i915: use the new iterator in i915_gem_busy_ioctl v2
Date: Thu, 23 Sep 2021 09:55:57 +0200	[thread overview]
Message-ID: <20210923075608.2873-14-christian.koenig@amd.com> (raw)
In-Reply-To: <20210923075608.2873-1-christian.koenig@amd.com>

This makes the function much simpler since the complex
retry logic is now handled else where.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_busy.c | 35 ++++++++++--------------
 1 file changed, 14 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_busy.c b/drivers/gpu/drm/i915/gem/i915_gem_busy.c
index 6234e17259c1..dc72b36dae54 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_busy.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_busy.c
@@ -82,8 +82,8 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
 {
 	struct drm_i915_gem_busy *args = data;
 	struct drm_i915_gem_object *obj;
-	struct dma_resv_list *list;
-	unsigned int seq;
+	struct dma_resv_iter cursor;
+	struct dma_fence *fence;
 	int err;
 
 	err = -ENOENT;
@@ -109,27 +109,20 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
 	 * to report the overall busyness. This is what the wait-ioctl does.
 	 *
 	 */
-retry:
-	seq = raw_read_seqcount(&obj->base.resv->seq);
-
-	/* Translate the exclusive fence to the READ *and* WRITE engine */
-	args->busy = busy_check_writer(dma_resv_excl_fence(obj->base.resv));
-
-	/* Translate shared fences to READ set of engines */
-	list = dma_resv_shared_list(obj->base.resv);
-	if (list) {
-		unsigned int shared_count = list->shared_count, i;
-
-		for (i = 0; i < shared_count; ++i) {
-			struct dma_fence *fence =
-				rcu_dereference(list->shared[i]);
-
+	args->busy = 0;
+	dma_resv_iter_begin(&cursor, obj->base.resv, true);
+	dma_resv_for_each_fence_unlocked(&cursor, fence) {
+		if (dma_resv_iter_is_restarted(&cursor))
+			args->busy = 0;
+
+		if (dma_resv_iter_is_exclusive(&cursor))
+			/* Translate the exclusive fence to the READ *and* WRITE engine */
+			args->busy |= busy_check_writer(fence);
+		else
+			/* Translate shared fences to READ set of engines */
 			args->busy |= busy_check_reader(fence);
-		}
 	}
-
-	if (args->busy && read_seqcount_retry(&obj->base.resv->seq, seq))
-		goto retry;
+	dma_resv_iter_end(&cursor);
 
 	err = 0;
 out:
-- 
2.25.1


  parent reply	other threads:[~2021-09-23 11:57 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-23  7:55 [Intel-gfx] [PATCH 01/25] dma-buf: add dma_resv_for_each_fence_unlocked v5 Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 02/25] dma-buf: add dma_resv_for_each_fence Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 03/25] dma-buf: use new iterator in dma_resv_copy_fences Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 04/25] dma-buf: use new iterator in dma_resv_get_fences v3 Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 05/25] dma-buf: use new iterator in dma_resv_wait_timeout Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 06/25] dma-buf: use new iterator in dma_resv_test_signaled Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 07/25] drm/ttm: use the new iterator in ttm_bo_flush_all_fences Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 08/25] drm/amdgpu: use the new iterator in amdgpu_sync_resv Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 09/25] drm/amdgpu: use new iterator in amdgpu_ttm_bo_eviction_valuable Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 10/25] drm/amdgpu: use new iterator in amdgpu_vm_prt_fini Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 11/25] drm/msm: use new iterator in msm_gem_describe Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 12/25] drm/radeon: use new iterator in radeon_sync_resv Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 13/25] drm/scheduler: use new iterator in drm_sched_job_add_implicit_dependencies v2 Christian König
2021-09-23  7:55 ` Christian König [this message]
2021-09-24  9:08   ` [Intel-gfx] [PATCH 14/25] drm/i915: use the new iterator in i915_gem_busy_ioctl v2 Tvrtko Ursulin
2021-09-23  7:55 ` [Intel-gfx] [PATCH 15/25] drm/i915: use the new iterator in i915_sw_fence_await_reservation v3 Christian König
2021-09-23  7:55 ` [Intel-gfx] [PATCH 16/25] drm/i915: use the new iterator in i915_request_await_object v2 Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 17/25] drm/i915: use new iterator in i915_gem_object_wait_reservation Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 18/25] drm/i915: use new iterator in i915_gem_object_wait_priority Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 19/25] drm/i915: use new cursor in intel_prepare_plane_fb Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 20/25] drm: use new iterator in drm_gem_fence_array_add_implicit v3 Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 21/25] drm: use new iterator in drm_gem_plane_helper_prepare_fb Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 22/25] drm/nouveau: use the new iterator in nouveau_fence_sync Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 23/25] drm/nouveau: use the new interator in nv50_wndw_prepare_fb Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 24/25] drm/etnaviv: use new iterator in etnaviv_gem_describe Christian König
2021-09-23  7:56 ` [Intel-gfx] [PATCH 25/25] drm/etnaviv: replace dma_resv_get_excl_unlocked Christian König
2021-09-23 12:32 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/25] dma-buf: add dma_resv_for_each_fence_unlocked v5 Patchwork
2021-09-23 12:35 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-09-23 13:05 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2021-09-24  9:11   ` Tvrtko Ursulin
2021-09-24  9:13     ` Christian König
2021-09-24 10:08       ` Tvrtko Ursulin

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