From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org,
linux-media@vger.kernel.org, intel-gfx@lists.freedesktop.org
Cc: daniel@ffwll.ch, tvrtko.ursulin@linux.intel.com
Subject: [PATCH 06/27] dma-buf: use new iterator in dma_resv_wait_timeout
Date: Fri, 24 Sep 2021 17:30:52 +0200 [thread overview]
Message-ID: <20210924153113.2159-6-christian.koenig@amd.com> (raw)
In-Reply-To: <20210924153113.2159-1-christian.koenig@amd.com>
This makes the function much simpler since the complex
retry logic is now handled elsewhere.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/dma-buf/dma-resv.c | 69 +++++---------------------------------
1 file changed, 8 insertions(+), 61 deletions(-)
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 39a3eac28834..ce6d0ac43911 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -609,74 +609,21 @@ long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr,
unsigned long timeout)
{
long ret = timeout ? timeout : 1;
- unsigned int seq, shared_count;
+ struct dma_resv_iter cursor;
struct dma_fence *fence;
- int i;
-
-retry:
- shared_count = 0;
- seq = read_seqcount_begin(&obj->seq);
- rcu_read_lock();
- i = -1;
-
- fence = dma_resv_excl_fence(obj);
- if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) {
- if (!dma_fence_get_rcu(fence))
- goto unlock_retry;
-
- if (dma_fence_is_signaled(fence)) {
- dma_fence_put(fence);
- fence = NULL;
- }
-
- } else {
- fence = NULL;
- }
-
- if (wait_all) {
- struct dma_resv_list *fobj = dma_resv_shared_list(obj);
-
- if (fobj)
- shared_count = fobj->shared_count;
-
- for (i = 0; !fence && i < shared_count; ++i) {
- struct dma_fence *lfence;
-
- lfence = rcu_dereference(fobj->shared[i]);
- if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
- &lfence->flags))
- continue;
- if (!dma_fence_get_rcu(lfence))
- goto unlock_retry;
-
- if (dma_fence_is_signaled(lfence)) {
- dma_fence_put(lfence);
- continue;
- }
+ dma_resv_iter_begin(&cursor, obj, wait_all);
+ dma_resv_for_each_fence_unlocked(&cursor, fence) {
- fence = lfence;
- break;
+ ret = dma_fence_wait_timeout(fence, intr, ret);
+ if (ret <= 0) {
+ dma_resv_iter_end(&cursor);
+ return ret;
}
}
+ dma_resv_iter_end(&cursor);
- rcu_read_unlock();
- if (fence) {
- if (read_seqcount_retry(&obj->seq, seq)) {
- dma_fence_put(fence);
- goto retry;
- }
-
- ret = dma_fence_wait_timeout(fence, intr, ret);
- dma_fence_put(fence);
- if (ret > 0 && wait_all && (i + 1 < shared_count))
- goto retry;
- }
return ret;
-
-unlock_retry:
- rcu_read_unlock();
- goto retry;
}
EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);
--
2.25.1
next prev parent reply other threads:[~2021-09-24 15:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 15:30 [PATCH 01/27] dma-buf: add dma_resv_for_each_fence_unlocked v6 Christian König
2021-09-24 15:30 ` [PATCH 02/27] dma-buf: add dma_resv_for_each_fence Christian König
2021-09-24 15:30 ` [PATCH 03/27] dma-buf: add dma_resv selftest Christian König
2021-09-24 15:30 ` [PATCH 04/27] dma-buf: use new iterator in dma_resv_copy_fences Christian König
2021-09-24 15:30 ` [PATCH 05/27] dma-buf: use new iterator in dma_resv_get_fences v3 Christian König
2021-09-24 15:30 ` Christian König [this message]
2021-09-24 15:30 ` [PATCH 07/27] dma-buf: use new iterator in dma_resv_test_signaled Christian König
2021-09-24 15:30 ` [PATCH 08/27] dma-buf: use the new iterator in dma_buf_debug_show Christian König
2021-09-24 15:30 ` [PATCH 09/27] drm/ttm: use the new iterator in ttm_bo_flush_all_fences Christian König
2021-09-24 15:30 ` [PATCH 10/27] drm/amdgpu: use the new iterator in amdgpu_sync_resv Christian König
2021-09-24 15:30 ` [PATCH 11/27] drm/amdgpu: use new iterator in amdgpu_ttm_bo_eviction_valuable Christian König
2021-09-24 15:30 ` [PATCH 12/27] drm/amdgpu: use new iterator in amdgpu_vm_prt_fini Christian König
2021-09-24 15:30 ` [PATCH 13/27] drm/msm: use new iterator in msm_gem_describe Christian König
2021-09-24 15:31 ` [PATCH 14/27] drm/radeon: use new iterator in radeon_sync_resv Christian König
2021-09-24 15:31 ` [PATCH 15/27] drm/scheduler: use new iterator in drm_sched_job_add_implicit_dependencies v2 Christian König
2021-09-24 15:31 ` [PATCH 16/27] drm/i915: use the new iterator in i915_gem_busy_ioctl v2 Christian König
2021-09-24 15:31 ` [PATCH 17/27] drm/i915: use the new iterator in i915_sw_fence_await_reservation v3 Christian König
2021-09-24 15:31 ` [PATCH 18/27] drm/i915: use the new iterator in i915_request_await_object v2 Christian König
2021-09-24 15:31 ` [PATCH 19/27] drm/i915: use new iterator in i915_gem_object_wait_reservation Christian König
2021-09-24 15:31 ` [PATCH 20/27] drm/i915: use new iterator in i915_gem_object_wait_priority Christian König
2021-09-24 15:31 ` [PATCH 21/27] drm/i915: use new cursor in intel_prepare_plane_fb Christian König
2021-09-24 15:31 ` [PATCH 22/27] drm: use new iterator in drm_gem_fence_array_add_implicit v3 Christian König
2021-09-24 15:31 ` [PATCH 23/27] drm: use new iterator in drm_gem_plane_helper_prepare_fb Christian König
2021-09-24 15:31 ` [PATCH 24/27] drm/nouveau: use the new iterator in nouveau_fence_sync Christian König
2021-09-24 15:31 ` [PATCH 25/27] drm/nouveau: use the new interator in nv50_wndw_prepare_fb Christian König
2021-09-24 15:31 ` [PATCH 26/27] drm/etnaviv: use new iterator in etnaviv_gem_describe Christian König
2021-09-24 15:31 ` [PATCH 27/27] drm/etnaviv: replace dma_resv_get_excl_unlocked Christian König
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