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drm/xe: add XE_BO_FLAG_PINNED_LATE_RESTORE

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With the idea of having more pinned objects using the blitter engine
where possible, during suspend/resume, mark the pinned objects which
can be done during the late phase once submission/migration has been
setup. Start out simple with lrc and page-tables from userspace.

v2:
 - s/early_restore/late_restore; early restore was way too bold with too
   many places being impacted at once.
v3:
 - Split late vs early into separate lists, to align with newly added
   apply-to-pinned infra.
v4:
 - Rebase.
v5:
 - Make sure we restore the late phase kernel_bo_present in igpu.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Link: https://lore.kernel.org/r/20250403102440.266113-13-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2025-04-03 11:24:45 +01:00
parent 58fa61ce4a
commit 7f387e6012
9 changed files with 93 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/xe/tests/xe_bo.c
View File

@ -252,7 +252,7 @@ static int evict_test_run_tile(struct xe_device *xe, struct xe_tile *tile, struc
for_each_gt(__gt, xe, id)
xe_gt_sanitize(__gt);
err = xe_bo_restore_kernel(xe);
err = xe_bo_restore_early(xe);
/*
* Snapshotting the CTB and copying back a potentially old
* version seems risky, depending on what might have been
@ -273,7 +273,7 @@ static int evict_test_run_tile(struct xe_device *xe, struct xe_tile *tile, struc
goto cleanup_all;
}
err = xe_bo_restore_user(xe);
err = xe_bo_restore_late(xe);
if (err) {
KUNIT_FAIL(test, "restore user err=%pe\n", ERR_PTR(err));
goto cleanup_all;

11
drivers/gpu/drm/xe/xe_bo.c
View File

@ -1121,7 +1121,7 @@ int xe_bo_evict_pinned(struct xe_bo *bo)
goto out_unlock_bo;
}
if (xe_bo_is_user(bo)) {
if (xe_bo_is_user(bo) || (bo->flags & XE_BO_FLAG_PINNED_LATE_RESTORE)) {
struct xe_migrate *migrate;
struct dma_fence *fence;
@ -1216,7 +1216,7 @@ int xe_bo_restore_pinned(struct xe_bo *bo)
goto out_backup;
}
if (xe_bo_is_user(bo)) {
if (xe_bo_is_user(bo) || (bo->flags & XE_BO_FLAG_PINNED_LATE_RESTORE)) {
struct xe_migrate *migrate;
struct dma_fence *fence;
@ -2187,7 +2187,7 @@ int xe_bo_pin_external(struct xe_bo *bo)
return err;
spin_lock(&xe->pinned.lock);
list_add_tail(&bo->pinned_link, &xe->pinned.external);
list_add_tail(&bo->pinned_link, &xe->pinned.late.external);
spin_unlock(&xe->pinned.lock);
}
@ -2232,7 +2232,10 @@ int xe_bo_pin(struct xe_bo *bo)
if (mem_type_is_vram(place->mem_type) || bo->flags & XE_BO_FLAG_GGTT) {
spin_lock(&xe->pinned.lock);
list_add_tail(&bo->pinned_link, &xe->pinned.kernel_bo_present);
if (bo->flags & XE_BO_FLAG_PINNED_LATE_RESTORE)
list_add_tail(&bo->pinned_link, &xe->pinned.late.kernel_bo_present);
else
list_add_tail(&bo->pinned_link, &xe->pinned.early.kernel_bo_present);
spin_unlock(&xe->pinned.lock);
}

9
drivers/gpu/drm/xe/xe_bo.h
View File

@ -40,10 +40,11 @@
#define XE_BO_FLAG_NEEDS_2M BIT(16)
#define XE_BO_FLAG_GGTT_INVALIDATE BIT(17)
#define XE_BO_FLAG_PINNED_NORESTORE BIT(18)
#define XE_BO_FLAG_GGTT0 BIT(19)
#define XE_BO_FLAG_GGTT1 BIT(20)
#define XE_BO_FLAG_GGTT2 BIT(21)
#define XE_BO_FLAG_GGTT3 BIT(22)
#define XE_BO_FLAG_PINNED_LATE_RESTORE BIT(19)
#define XE_BO_FLAG_GGTT0 BIT(20)
#define XE_BO_FLAG_GGTT1 BIT(21)
#define XE_BO_FLAG_GGTT2 BIT(22)
#define XE_BO_FLAG_GGTT3 BIT(23)
#define XE_BO_FLAG_GGTT_ALL (XE_BO_FLAG_GGTT0 | \
XE_BO_FLAG_GGTT1 | \
XE_BO_FLAG_GGTT2 | \

64
drivers/gpu/drm/xe/xe_bo_evict.c
View File

@ -91,10 +91,14 @@ int xe_bo_evict_all(struct xe_device *xe)
}
}
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.external,
&xe->pinned.external,
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.late.external,
&xe->pinned.late.external,
xe_bo_evict_pinned);
if (!ret)
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.late.kernel_bo_present,
&xe->pinned.late.evicted, xe_bo_evict_pinned);
/*
* Wait for all user BO to be evicted as those evictions depend on the
* memory moved below.
@ -105,8 +109,8 @@ int xe_bo_evict_all(struct xe_device *xe)
if (ret)
return ret;
return xe_bo_apply_to_pinned(xe, &xe->pinned.kernel_bo_present,
&xe->pinned.evicted,
return xe_bo_apply_to_pinned(xe, &xe->pinned.early.kernel_bo_present,
&xe->pinned.early.evicted,
xe_bo_evict_pinned);
}
@ -137,13 +141,14 @@ static int xe_bo_restore_and_map_ggtt(struct xe_bo *bo)
* We expect validate to trigger a move VRAM and our move code
* should setup the iosys map.
*/
xe_assert(xe, !iosys_map_is_null(&bo->vmap));
xe_assert(xe, !(bo->flags & XE_BO_FLAG_PINNED_LATE_RESTORE) ||
!iosys_map_is_null(&bo->vmap));
return 0;
}
/**
* xe_bo_restore_kernel - restore kernel BOs to VRAM
* xe_bo_restore_early - restore early phase kernel BOs to VRAM
*
* @xe: xe device
*
@ -153,34 +158,44 @@ static int xe_bo_restore_and_map_ggtt(struct xe_bo *bo)
* This function should be called early, before trying to init the GT, on device
* resume.
*/
int xe_bo_restore_kernel(struct xe_device *xe)
int xe_bo_restore_early(struct xe_device *xe)
{
return xe_bo_apply_to_pinned(xe, &xe->pinned.evicted,
&xe->pinned.kernel_bo_present,
return xe_bo_apply_to_pinned(xe, &xe->pinned.early.evicted,
&xe->pinned.early.kernel_bo_present,
xe_bo_restore_and_map_ggtt);
}
/**
* xe_bo_restore_user - restore pinned user BOs to VRAM
* xe_bo_restore_late - restore pinned late phase BOs
*
* @xe: xe device
*
* Move pinned user BOs from temporary (typically system) memory to VRAM via
* CPU. All moves done via TTM calls.
* Move pinned user and kernel BOs which can use blitter from temporary
* (typically system) memory to VRAM. All moves done via TTM calls.
*
* This function should be called late, after GT init, on device resume.
*/
int xe_bo_restore_user(struct xe_device *xe)
int xe_bo_restore_late(struct xe_device *xe)
{
struct xe_tile *tile;
int ret, id;
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.late.evicted,
&xe->pinned.late.kernel_bo_present,
xe_bo_restore_and_map_ggtt);
for_each_tile(tile, xe, id)
xe_tile_migrate_wait(tile);
if (ret)
return ret;
if (!IS_DGFX(xe))
return 0;
/* Pinned user memory in VRAM should be validated on resume */
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.external,
&xe->pinned.external,
ret = xe_bo_apply_to_pinned(xe, &xe->pinned.late.external,
&xe->pinned.late.external,
xe_bo_restore_pinned);
/* Wait for restore to complete */
@ -195,8 +210,8 @@ static void xe_bo_pci_dev_remove_pinned(struct xe_device *xe)
struct xe_tile *tile;
unsigned int id;
(void)xe_bo_apply_to_pinned(xe, &xe->pinned.external,
&xe->pinned.external,
(void)xe_bo_apply_to_pinned(xe, &xe->pinned.late.external,
&xe->pinned.late.external,
xe_bo_dma_unmap_pinned);
for_each_tile(tile, xe, id)
xe_tile_migrate_wait(tile);
@ -241,8 +256,11 @@ static void xe_bo_pinned_fini(void *arg)
{
struct xe_device *xe = arg;
(void)xe_bo_apply_to_pinned(xe, &xe->pinned.kernel_bo_present,
&xe->pinned.kernel_bo_present,
(void)xe_bo_apply_to_pinned(xe, &xe->pinned.late.kernel_bo_present,
&xe->pinned.late.kernel_bo_present,
xe_bo_dma_unmap_pinned);
(void)xe_bo_apply_to_pinned(xe, &xe->pinned.early.kernel_bo_present,
&xe->pinned.early.kernel_bo_present,
xe_bo_dma_unmap_pinned);
}
@ -259,9 +277,11 @@ static void xe_bo_pinned_fini(void *arg)
int xe_bo_pinned_init(struct xe_device *xe)
{
spin_lock_init(&xe->pinned.lock);
INIT_LIST_HEAD(&xe->pinned.kernel_bo_present);
INIT_LIST_HEAD(&xe->pinned.external);
INIT_LIST_HEAD(&xe->pinned.evicted);
INIT_LIST_HEAD(&xe->pinned.early.kernel_bo_present);
INIT_LIST_HEAD(&xe->pinned.early.evicted);
INIT_LIST_HEAD(&xe->pinned.late.kernel_bo_present);
INIT_LIST_HEAD(&xe->pinned.late.evicted);
INIT_LIST_HEAD(&xe->pinned.late.external);
return devm_add_action_or_reset(xe->drm.dev, xe_bo_pinned_fini, xe);
}

4
drivers/gpu/drm/xe/xe_bo_evict.h
View File

@ -9,8 +9,8 @@
struct xe_device;
int xe_bo_evict_all(struct xe_device *xe);
int xe_bo_restore_kernel(struct xe_device *xe);
int xe_bo_restore_user(struct xe_device *xe);
int xe_bo_restore_early(struct xe_device *xe);
int xe_bo_restore_late(struct xe_device *xe);
void xe_bo_pci_dev_remove_all(struct xe_device *xe);

22
drivers/gpu/drm/xe/xe_device_types.h
View File

@ -422,12 +422,22 @@ struct xe_device {
struct {
/** @pinned.lock: protected pinned BO list state */
spinlock_t lock;
/** @pinned.kernel_bo_present: pinned kernel BO that are present */
struct list_head kernel_bo_present;
/** @pinned.evicted: pinned BO that have been evicted */
struct list_head evicted;
/** @pinned.external: pinned external and dma-buf. */
struct list_head external;
/** @pinned.early: early pinned lists */
struct {
/** @pinned.early.kernel_bo_present: pinned kernel BO that are present */
struct list_head kernel_bo_present;
/** @pinned.early.evicted: pinned BO that have been evicted */
struct list_head evicted;
} early;
/** @pinned.late: late pinned lists */
struct {
/** @pinned.late.kernel_bo_present: pinned kernel BO that are present */
struct list_head kernel_bo_present;
/** @pinned.late.evicted: pinned BO that have been evicted */
struct list_head evicted;
/** @pinned.external: pinned external and dma-buf. */
struct list_head external;
} late;
} pinned;
/** @ufence_wq: user fence wait queue */

10
drivers/gpu/drm/xe/xe_lrc.c
View File

@ -896,6 +896,7 @@ static int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
void *init_data = NULL;
u32 arb_enable;
u32 lrc_size;
u32 bo_flags;
int err;
kref_init(&lrc->refcount);
@ -904,15 +905,18 @@ static int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
if (xe_gt_has_indirect_ring_state(gt))
lrc->flags |= XE_LRC_FLAG_INDIRECT_RING_STATE;
bo_flags = XE_BO_FLAG_VRAM_IF_DGFX(tile) | XE_BO_FLAG_GGTT |
XE_BO_FLAG_GGTT_INVALIDATE;
if (vm && vm->xef) /* userspace */
bo_flags |= XE_BO_FLAG_PINNED_LATE_RESTORE;
/*
* FIXME: Perma-pinning LRC as we don't yet support moving GGTT address
* via VM bind calls.
*/
lrc->bo = xe_bo_create_pin_map(xe, tile, vm, lrc_size,
ttm_bo_type_kernel,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_GGTT |
XE_BO_FLAG_GGTT_INVALIDATE);
bo_flags);
if (IS_ERR(lrc->bo))
return PTR_ERR(lrc->bo);

8
drivers/gpu/drm/xe/xe_pm.c
View File

@ -188,7 +188,7 @@ int xe_pm_resume(struct xe_device *xe)
* This only restores pinned memory which is the memory required for the
* GT(s) to resume.
*/
err = xe_bo_restore_kernel(xe);
err = xe_bo_restore_early(xe);
if (err)
goto err;
@ -199,7 +199,7 @@ int xe_pm_resume(struct xe_device *xe)
xe_display_pm_resume(xe);
err = xe_bo_restore_user(xe);
err = xe_bo_restore_late(xe);
if (err)
goto err;
@ -484,7 +484,7 @@ int xe_pm_runtime_resume(struct xe_device *xe)
* This only restores pinned memory which is the memory
* required for the GT(s) to resume.
*/
err = xe_bo_restore_kernel(xe);
err = xe_bo_restore_early(xe);
if (err)
goto out;
}
@ -497,7 +497,7 @@ int xe_pm_runtime_resume(struct xe_device *xe)
xe_display_pm_runtime_resume(xe);
if (xe->d3cold.allowed) {
err = xe_bo_restore_user(xe);
err = xe_bo_restore_late(xe);
if (err)
goto out;
}

13
drivers/gpu/drm/xe/xe_pt.c
View File

@ -103,6 +103,7 @@ struct xe_pt *xe_pt_create(struct xe_vm *vm, struct xe_tile *tile,
{
struct xe_pt *pt;
struct xe_bo *bo;
u32 bo_flags;
int err;
if (level) {
@ -115,14 +116,16 @@ struct xe_pt *xe_pt_create(struct xe_vm *vm, struct xe_tile *tile,
if (!pt)
return ERR_PTR(-ENOMEM);
bo_flags = XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_IGNORE_MIN_PAGE_SIZE | XE_BO_FLAG_PINNED |
XE_BO_FLAG_NO_RESV_EVICT | XE_BO_FLAG_PAGETABLE;
if (vm->xef) /* userspace */
bo_flags |= XE_BO_FLAG_PINNED_LATE_RESTORE;
pt->level = level;
bo = xe_bo_create_pin_map(vm->xe, tile, vm, SZ_4K,
ttm_bo_type_kernel,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_IGNORE_MIN_PAGE_SIZE |
XE_BO_FLAG_PINNED |
XE_BO_FLAG_NO_RESV_EVICT |
XE_BO_FLAG_PAGETABLE);
bo_flags);
if (IS_ERR(bo)) {
err = PTR_ERR(bo);
goto err_kfree;