From: Maarten Lankhorst <dev@lankhorst.se>
To: intel-xe@lists.freedesktop.org
Cc: Maarten Lankhorst <dev@lankhorst.se>,
Matthew Brost <matthew.brost@intel.com>,
Michal Wajdeczko <michal.wajdeczko@intel.com>
Subject: [PATCH v8 4/5] drm/xe: Make xe_ggtt_node_insert return a node
Date: Fri, 6 Feb 2026 12:21:13 +0100 [thread overview]
Message-ID: <20260206112108.1453809-11-dev@lankhorst.se> (raw)
In-Reply-To: <20260206112108.1453809-7-dev@lankhorst.se>
This extra step is easier to handle inside xe_ggtt.c and makes
xe_ggtt_node_allocated a simple null check instead, as the intermediate
state 'allocated but not inserted' is no longer used.
Privatize xe_ggtt_node_fini() and init() as they're no longer used
outside of xe_ggtt.c
Reviewed-by: Matthew Brost <matthew.brost@intel.com> #v1
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
---
drivers/gpu/drm/xe/display/xe_fb_pin.c | 2 +-
drivers/gpu/drm/xe/tests/xe_guc_buf_kunit.c | 6 +-
drivers/gpu/drm/xe/xe_ggtt.c | 97 +++++++++------------
drivers/gpu/drm/xe/xe_ggtt.h | 7 +-
drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c | 24 +----
5 files changed, 48 insertions(+), 88 deletions(-)
diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c
index d2c4e94180fa3..5ff583699325c 100644
--- a/drivers/gpu/drm/xe/display/xe_fb_pin.c
+++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c
@@ -256,7 +256,7 @@ static int __xe_pin_fb_vma_ggtt(const struct intel_framebuffer *fb,
size = intel_rotation_info_size(&view->rotated) * XE_PAGE_SIZE;
pte = xe_ggtt_encode_pte_flags(ggtt, bo, xe->pat.idx[XE_CACHE_NONE]);
- vma->node = xe_ggtt_node_insert_transform(ggtt, bo, pte,
+ vma->node = xe_ggtt_insert_node_transform(ggtt, bo, pte,
ALIGN(size, align), align,
view->type == I915_GTT_VIEW_NORMAL ?
NULL : write_ggtt_rotated_node,
diff --git a/drivers/gpu/drm/xe/tests/xe_guc_buf_kunit.c b/drivers/gpu/drm/xe/tests/xe_guc_buf_kunit.c
index acddbedcf17cb..51e1e04001ace 100644
--- a/drivers/gpu/drm/xe/tests/xe_guc_buf_kunit.c
+++ b/drivers/gpu/drm/xe/tests/xe_guc_buf_kunit.c
@@ -38,12 +38,8 @@ static struct xe_bo *replacement_xe_managed_bo_create_pin_map(struct xe_device *
if (flags & XE_BO_FLAG_GGTT) {
struct xe_ggtt *ggtt = tile->mem.ggtt;
- bo->ggtt_node[tile->id] = xe_ggtt_node_init(ggtt);
+ bo->ggtt_node[tile->id] = xe_ggtt_insert_node(ggtt, xe_bo_size(bo), SZ_4K);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bo->ggtt_node[tile->id]);
-
- KUNIT_ASSERT_EQ(test, 0,
- xe_ggtt_node_insert(bo->ggtt_node[tile->id],
- xe_bo_size(bo), SZ_4K));
}
return bo;
diff --git a/drivers/gpu/drm/xe/xe_ggtt.c b/drivers/gpu/drm/xe/xe_ggtt.c
index 581c7c0c57432..d2d00ba2aae6a 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.c
+++ b/drivers/gpu/drm/xe/xe_ggtt.c
@@ -69,9 +69,8 @@
/**
* struct xe_ggtt_node - A node in GGTT.
*
- * This struct needs to be initialized (only-once) with xe_ggtt_node_init() before any node
- * insertion or reservation.
- * It will, then, be finalized by xe_ggtt_node_remove().
+ * This struct is allocated with xe_ggtt_insert_node(,_transform) or xe_ggtt_insert_bo(,_at).
+ * It will be deallocated using xe_ggtt_node_remove().
*/
struct xe_ggtt_node {
/** @ggtt: Back pointer to xe_ggtt where this region will be inserted at */
@@ -458,6 +457,11 @@ static void xe_ggtt_initial_clear(struct xe_ggtt *ggtt)
mutex_unlock(&ggtt->lock);
}
+static void ggtt_node_fini(struct xe_ggtt_node *node)
+{
+ kfree(node);
+}
+
static void ggtt_node_remove(struct xe_ggtt_node *node)
{
struct xe_ggtt *ggtt = node->ggtt;
@@ -483,7 +487,7 @@ static void ggtt_node_remove(struct xe_ggtt_node *node)
drm_dev_exit(idx);
free_node:
- xe_ggtt_node_fini(node);
+ ggtt_node_fini(node);
}
static void ggtt_node_remove_work_func(struct work_struct *work)
@@ -613,50 +617,14 @@ void xe_ggtt_shift_nodes(struct xe_ggtt *ggtt, u64 new_start)
WRITE_ONCE(ggtt->start, new_start);
}
-static int xe_ggtt_node_insert_locked(struct xe_ggtt_node *node,
+static int xe_ggtt_insert_node_locked(struct xe_ggtt_node *node,
u32 size, u32 align, u32 mm_flags)
{
return drm_mm_insert_node_generic(&node->ggtt->mm, &node->base, size, align, 0,
mm_flags);
}
-/**
- * xe_ggtt_node_insert - Insert a &xe_ggtt_node into the GGTT
- * @node: the &xe_ggtt_node to be inserted
- * @size: size of the node
- * @align: alignment constrain of the node
- *
- * It cannot be called without first having called xe_ggtt_init() once.
- *
- * Return: 0 on success or a negative error code on failure.
- */
-int xe_ggtt_node_insert(struct xe_ggtt_node *node, u32 size, u32 align)
-{
- int ret;
-
- if (!node || !node->ggtt)
- return -ENOENT;
-
- mutex_lock(&node->ggtt->lock);
- ret = xe_ggtt_node_insert_locked(node, size, align,
- DRM_MM_INSERT_HIGH);
- mutex_unlock(&node->ggtt->lock);
-
- return ret;
-}
-
-/**
- * xe_ggtt_node_init - Initialize %xe_ggtt_node struct
- * @ggtt: the &xe_ggtt where the new node will later be inserted/reserved.
- *
- * This function will allocate the struct %xe_ggtt_node and return its pointer.
- * This struct will then be freed after the node removal upon xe_ggtt_node_remove()
- * Having %xe_ggtt_node struct allocated doesn't mean that the node is already allocated
- * in GGTT. Only xe_ggtt_node_insert() will ensure the node is inserted or reserved in GGTT.
- *
- * Return: A pointer to %xe_ggtt_node struct on success. An ERR_PTR otherwise.
- **/
-struct xe_ggtt_node *xe_ggtt_node_init(struct xe_ggtt *ggtt)
+static struct xe_ggtt_node *ggtt_node_init(struct xe_ggtt *ggtt)
{
struct xe_ggtt_node *node = kzalloc(sizeof(*node), GFP_NOFS);
@@ -670,16 +638,31 @@ struct xe_ggtt_node *xe_ggtt_node_init(struct xe_ggtt *ggtt)
}
/**
- * xe_ggtt_node_fini - Forcebly finalize %xe_ggtt_node struct
- * @node: the &xe_ggtt_node to be freed
+ * xe_ggtt_insert_node - Insert a &xe_ggtt_node into the GGTT
+ * @ggtt: the &xe_ggtt into which the node should be inserted.
+ * @size: size of the node
+ * @align: alignment constrain of the node
*
- * If anything went wrong with either xe_ggtt_node_insert() and this @node is
- * not going to be reused, then this function needs to be called to free the
- * %xe_ggtt_node struct
- **/
-void xe_ggtt_node_fini(struct xe_ggtt_node *node)
+ * Return: &xe_ggtt_node on success or a ERR_PTR on failure.
+ */
+struct xe_ggtt_node *xe_ggtt_insert_node(struct xe_ggtt *ggtt, u32 size, u32 align)
{
- kfree(node);
+ struct xe_ggtt_node *node;
+ int ret;
+
+ node = ggtt_node_init(ggtt);
+ if (IS_ERR(node))
+ return node;
+
+ guard(mutex)(&ggtt->lock);
+ ret = xe_ggtt_insert_node_locked(node, size, align,
+ DRM_MM_INSERT_HIGH);
+ if (ret) {
+ ggtt_node_fini(node);
+ return ERR_PTR(ret);
+ }
+
+ return node;
}
/**
@@ -767,7 +750,7 @@ void xe_ggtt_map_bo_unlocked(struct xe_ggtt *ggtt, struct xe_bo *bo)
}
/**
- * xe_ggtt_node_insert_transform - Insert a newly allocated &xe_ggtt_node into the GGTT
+ * xe_ggtt_insert_node_transform - Insert a newly allocated &xe_ggtt_node into the GGTT
* @ggtt: the &xe_ggtt where the node will inserted/reserved.
* @bo: The bo to be transformed
* @pte_flags: The extra GGTT flags to add to mapping.
@@ -781,7 +764,7 @@ void xe_ggtt_map_bo_unlocked(struct xe_ggtt *ggtt, struct xe_bo *bo)
*
* Return: A pointer to %xe_ggtt_node struct on success. An ERR_PTR otherwise.
*/
-struct xe_ggtt_node *xe_ggtt_node_insert_transform(struct xe_ggtt *ggtt,
+struct xe_ggtt_node *xe_ggtt_insert_node_transform(struct xe_ggtt *ggtt,
struct xe_bo *bo, u64 pte_flags,
u64 size, u32 align,
xe_ggtt_transform_cb transform, void *arg)
@@ -789,7 +772,7 @@ struct xe_ggtt_node *xe_ggtt_node_insert_transform(struct xe_ggtt *ggtt,
struct xe_ggtt_node *node;
int ret;
- node = xe_ggtt_node_init(ggtt);
+ node = ggtt_node_init(ggtt);
if (IS_ERR(node))
return ERR_CAST(node);
@@ -798,7 +781,7 @@ struct xe_ggtt_node *xe_ggtt_node_insert_transform(struct xe_ggtt *ggtt,
goto err;
}
- ret = xe_ggtt_node_insert_locked(node, size, align, 0);
+ ret = xe_ggtt_insert_node_locked(node, size, align, 0);
if (ret)
goto err_unlock;
@@ -813,7 +796,7 @@ struct xe_ggtt_node *xe_ggtt_node_insert_transform(struct xe_ggtt *ggtt,
err_unlock:
mutex_unlock(&ggtt->lock);
err:
- xe_ggtt_node_fini(node);
+ ggtt_node_fini(node);
return ERR_PTR(ret);
}
@@ -839,7 +822,7 @@ static int __xe_ggtt_insert_bo_at(struct xe_ggtt *ggtt, struct xe_bo *bo,
xe_pm_runtime_get_noresume(tile_to_xe(ggtt->tile));
- bo->ggtt_node[tile_id] = xe_ggtt_node_init(ggtt);
+ bo->ggtt_node[tile_id] = ggtt_node_init(ggtt);
if (IS_ERR(bo->ggtt_node[tile_id])) {
err = PTR_ERR(bo->ggtt_node[tile_id]);
bo->ggtt_node[tile_id] = NULL;
@@ -870,7 +853,7 @@ static int __xe_ggtt_insert_bo_at(struct xe_ggtt *ggtt, struct xe_bo *bo,
err = drm_mm_insert_node_in_range(&ggtt->mm, &bo->ggtt_node[tile_id]->base,
xe_bo_size(bo), alignment, 0, start, end, 0);
if (err) {
- xe_ggtt_node_fini(bo->ggtt_node[tile_id]);
+ ggtt_node_fini(bo->ggtt_node[tile_id]);
bo->ggtt_node[tile_id] = NULL;
} else {
u16 cache_mode = bo->flags & XE_BO_FLAG_NEEDS_UC ? XE_CACHE_NONE : XE_CACHE_WB;
diff --git a/drivers/gpu/drm/xe/xe_ggtt.h b/drivers/gpu/drm/xe/xe_ggtt.h
index 403eb5c0db49d..9e6210c6f44ea 100644
--- a/drivers/gpu/drm/xe/xe_ggtt.h
+++ b/drivers/gpu/drm/xe/xe_ggtt.h
@@ -18,15 +18,14 @@ int xe_ggtt_init_early(struct xe_ggtt *ggtt);
int xe_ggtt_init_kunit(struct xe_ggtt *ggtt, u32 reserved, u32 size);
int xe_ggtt_init(struct xe_ggtt *ggtt);
-struct xe_ggtt_node *xe_ggtt_node_init(struct xe_ggtt *ggtt);
-void xe_ggtt_node_fini(struct xe_ggtt_node *node);
void xe_ggtt_shift_nodes(struct xe_ggtt *ggtt, u64 new_base);
u64 xe_ggtt_start(struct xe_ggtt *ggtt);
u64 xe_ggtt_size(struct xe_ggtt *ggtt);
-int xe_ggtt_node_insert(struct xe_ggtt_node *node, u32 size, u32 align);
struct xe_ggtt_node *
-xe_ggtt_node_insert_transform(struct xe_ggtt *ggtt,
+xe_ggtt_insert_node(struct xe_ggtt *ggtt, u32 size, u32 align);
+struct xe_ggtt_node *
+xe_ggtt_insert_node_transform(struct xe_ggtt *ggtt,
struct xe_bo *bo, u64 pte,
u64 size, u32 align,
xe_ggtt_transform_cb transform, void *arg);
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
index 23601ce79348a..3fe664cd3b88c 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
@@ -482,23 +482,9 @@ static int pf_distribute_config_ggtt(struct xe_tile *tile, unsigned int vfid, u6
return err ?: err2;
}
-static void pf_release_ggtt(struct xe_tile *tile, struct xe_ggtt_node *node)
-{
- if (xe_ggtt_node_allocated(node)) {
- /*
- * explicit GGTT PTE assignment to the PF using xe_ggtt_assign()
- * is redundant, as PTE will be implicitly re-assigned to PF by
- * the xe_ggtt_clear() called by below xe_ggtt_remove_node().
- */
- xe_ggtt_node_remove(node, false);
- } else {
- xe_ggtt_node_fini(node);
- }
-}
-
static void pf_release_vf_config_ggtt(struct xe_gt *gt, struct xe_gt_sriov_config *config)
{
- pf_release_ggtt(gt_to_tile(gt), config->ggtt_region);
+ xe_ggtt_node_remove(config->ggtt_region, false);
config->ggtt_region = NULL;
}
@@ -533,14 +519,10 @@ static int pf_provision_vf_ggtt(struct xe_gt *gt, unsigned int vfid, u64 size)
if (!size)
return 0;
- node = xe_ggtt_node_init(ggtt);
+ node = xe_ggtt_insert_node(ggtt, size, alignment);
if (IS_ERR(node))
return PTR_ERR(node);
- err = xe_ggtt_node_insert(node, size, alignment);
- if (unlikely(err))
- goto err;
-
xe_ggtt_assign(node, vfid);
xe_gt_sriov_dbg_verbose(gt, "VF%u assigned GGTT %llx-%llx\n",
vfid, xe_ggtt_node_addr(node), xe_ggtt_node_addr(node) + size - 1);
@@ -552,7 +534,7 @@ static int pf_provision_vf_ggtt(struct xe_gt *gt, unsigned int vfid, u64 size)
config->ggtt_region = node;
return 0;
err:
- pf_release_ggtt(tile, node);
+ xe_ggtt_node_remove(node, false);
return err;
}
--
2.51.0
next prev parent reply other threads:[~2026-02-06 11:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-06 11:21 [PATCH v8 0/5] drm/xe: Privatize struct xe_ggtt Maarten Lankhorst
2026-02-06 11:21 ` [PATCH v8 1/5] drm/xe: Make xe_ggtt_node offset relative to starting offset Maarten Lankhorst
2026-02-06 11:21 ` [PATCH v8 2/5] drm/xe: Rewrite GGTT VF initialization Maarten Lankhorst
2026-02-06 11:36 ` [PATCH v8.1] " Maarten Lankhorst
2026-02-06 11:21 ` [PATCH v8 3/5] drm/xe: Move struct xe_ggtt to xe_ggtt.c Maarten Lankhorst
2026-02-06 11:21 ` Maarten Lankhorst [this message]
2026-02-06 11:21 ` [PATCH v8 5/5] drm/xe: Remove xe_ggtt_node_allocated Maarten Lankhorst
2026-02-06 11:41 ` ✗ CI.checkpatch: warning for drm/xe: Privatize struct xe_ggtt. (rev7) Patchwork
2026-02-06 11:42 ` ✓ CI.KUnit: success " Patchwork
2026-02-06 12:16 ` ✓ Xe.CI.BAT: " Patchwork
2026-02-07 13:22 ` ✗ Xe.CI.FULL: failure " Patchwork
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