From 7bc80a5462c37eab58a9ea386064307c0f447fd1 Mon Sep 17 00:00:00 2001
From: Christian König <christian.koenig@amd.com>
Date: Tue, 9 Nov 2021 11:08:18 +0100
Subject: dma-buf: add enum dma_resv_usage v4
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This change adds the dma_resv_usage enum and allows us to specify why a
dma_resv object is queried for its containing fences.
Additional to that a dma_resv_usage_rw() helper function is added to aid
retrieving the fences for a read or write userspace submission.
This is then deployed to the different query functions of the dma_resv
object and all of their users. When the write paratermer was previously
true we now use DMA_RESV_USAGE_WRITE and DMA_RESV_USAGE_READ otherwise.
v2: add KERNEL/OTHER in separate patch
v3: some kerneldoc suggestions by Daniel
v4: some more kerneldoc suggestions by Daniel, fix missing cases lost in
the rebase pointed out by Bas.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-2-christian.koenig@amd.com
---
drivers/gpu/drm/i915/display/intel_atomic_plane.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
(limited to 'drivers/gpu/drm/i915/display')
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 5712688232fb..03e86e836a17 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -997,7 +997,8 @@ intel_prepare_plane_fb(struct drm_plane *_plane,
if (ret < 0)
goto unpin_fb;
- dma_resv_iter_begin(&cursor, obj->base.resv, false);
+ dma_resv_iter_begin(&cursor, obj->base.resv,
+ DMA_RESV_USAGE_WRITE);
dma_resv_for_each_fence_unlocked(&cursor, fence) {
add_rps_boost_after_vblank(new_plane_state->hw.crtc,
fence);
--
cgit