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drm/xe: Make TLB invalidation fences unordered

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They can actually complete out-of-order, so allocate a unique
fence context for each fence.

Fixes: 5387e865d9 ("drm/xe: Add TLB invalidation fence after rebinds issued from execs")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: <stable@vger.kernel.org> # v6.8+
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240327091136.3271-4-thomas.hellstrom@linux.intel.com
This commit is contained in:
Thomas Hellström 2024-03-27 10:11:35 +01:00
parent 5a091aff50
commit 0453f17575
3 changed files with 1 additions and 10 deletions
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1
drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c
View File

@ -63,7 +63,6 @@ int xe_gt_tlb_invalidation_init(struct xe_gt *gt)
INIT_LIST_HEAD(&gt->tlb_invalidation.pending_fences);
spin_lock_init(&gt->tlb_invalidation.pending_lock);
spin_lock_init(&gt->tlb_invalidation.lock);
gt->tlb_invalidation.fence_context = dma_fence_context_alloc(1);
INIT_DELAYED_WORK(&gt->tlb_invalidation.fence_tdr,
xe_gt_tlb_fence_timeout);

7
drivers/gpu/drm/xe/xe_gt_types.h
View File

@ -179,13 +179,6 @@ struct xe_gt {
* xe_gt_tlb_fence_timeout after the timeut interval is over.
*/
struct delayed_work fence_tdr;
/** @tlb_invalidation.fence_context: context for TLB invalidation fences */
u64 fence_context;
/**
* @tlb_invalidation.fence_seqno: seqno to TLB invalidation fences, protected by
* tlb_invalidation.lock
*/
u32 fence_seqno;
/** @tlb_invalidation.lock: protects TLB invalidation fences */
spinlock_t lock;
} tlb_invalidation;

3
drivers/gpu/drm/xe/xe_pt.c
View File

@ -1135,8 +1135,7 @@ static int invalidation_fence_init(struct xe_gt *gt,
spin_lock_irq(&gt->tlb_invalidation.lock);
dma_fence_init(&ifence->base.base, &invalidation_fence_ops,
&gt->tlb_invalidation.lock,
gt->tlb_invalidation.fence_context,
++gt->tlb_invalidation.fence_seqno);
dma_fence_context_alloc(1), 1);
spin_unlock_irq(&gt->tlb_invalidation.lock);
INIT_LIST_HEAD(&ifence->base.link);