From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c | 490 ++++++------------------------------------------------
1 files changed, 55 insertions(+), 435 deletions(-)
diff --git a/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c b/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
index e55508b..828b516 100644
--- a/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+++ b/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
@@ -45,393 +45,81 @@
#include <linux/firmware.h>
#include <linux/module.h>
-#include <linux/mmu_notifier.h>
-#include <linux/interval_tree.h>
-#include <drm/drmP.h>
#include <drm/drm.h>
#include "amdgpu.h"
#include "amdgpu_amdkfd.h"
/**
- * struct amdgpu_mn
+ * amdgpu_mn_invalidate_gfx - callback to notify about mm change
*
- * @adev: amdgpu device pointer
- * @mm: process address space
- * @mn: MMU notifier structure
- * @type: type of MMU notifier
- * @work: destruction work item
- * @node: hash table node to find structure by adev and mn
- * @lock: rw semaphore protecting the notifier nodes
- * @objects: interval tree containing amdgpu_mn_nodes
- * @read_lock: mutex for recursive locking of @lock
- * @recursion: depth of recursion
- *
- * Data for each amdgpu device and process address space.
- */
-struct amdgpu_mn {
- /* constant after initialisation */
- struct amdgpu_device *adev;
- struct mm_struct *mm;
- struct mmu_notifier mn;
- enum amdgpu_mn_type type;
-
- /* only used on destruction */
- struct work_struct work;
-
- /* protected by adev->mn_lock */
- struct hlist_node node;
-
- /* objects protected by lock */
- struct rw_semaphore lock;
- struct rb_root_cached objects;
- struct mutex read_lock;
- atomic_t recursion;
-};
-
-/**
- * struct amdgpu_mn_node
- *
- * @it: interval node defining start-last of the affected address range
- * @bos: list of all BOs in the affected address range
- *
- * Manages all BOs which are affected of a certain range of address space.
- */
-struct amdgpu_mn_node {
- struct interval_tree_node it;
- struct list_head bos;
-};
-
-/**
- * amdgpu_mn_destroy - destroy the MMU notifier
- *
- * @work: previously sheduled work item
- *
- * Lazy destroys the notifier from a work item
- */
-static void amdgpu_mn_destroy(struct work_struct *work)
-{
- struct amdgpu_mn *amn = container_of(work, struct amdgpu_mn, work);
- struct amdgpu_device *adev = amn->adev;
- struct amdgpu_mn_node *node, *next_node;
- struct amdgpu_bo *bo, *next_bo;
-
- mutex_lock(&adev->mn_lock);
- down_write(&amn->lock);
- hash_del(&amn->node);
- rbtree_postorder_for_each_entry_safe(node, next_node,
- &amn->objects.rb_root, it.rb) {
- list_for_each_entry_safe(bo, next_bo, &node->bos, mn_list) {
- bo->mn = NULL;
- list_del_init(&bo->mn_list);
- }
- kfree(node);
- }
- up_write(&amn->lock);
- mutex_unlock(&adev->mn_lock);
- mmu_notifier_unregister_no_release(&amn->mn, amn->mm);
- kfree(amn);
-}
-
-/**
- * amdgpu_mn_release - callback to notify about mm destruction
- *
- * @mn: our notifier
- * @mm: the mm this callback is about
- *
- * Shedule a work item to lazy destroy our notifier.
- */
-static void amdgpu_mn_release(struct mmu_notifier *mn,
- struct mm_struct *mm)
-{
- struct amdgpu_mn *amn = container_of(mn, struct amdgpu_mn, mn);
-
- INIT_WORK(&amn->work, amdgpu_mn_destroy);
- schedule_work(&amn->work);
-}
-
-
-/**
- * amdgpu_mn_lock - take the write side lock for this notifier
- *
- * @mn: our notifier
- */
-void amdgpu_mn_lock(struct amdgpu_mn *mn)
-{
- if (mn)
- down_write(&mn->lock);
-}
-
-/**
- * amdgpu_mn_unlock - drop the write side lock for this notifier
- *
- * @mn: our notifier
- */
-void amdgpu_mn_unlock(struct amdgpu_mn *mn)
-{
- if (mn)
- up_write(&mn->lock);
-}
-
-/**
- * amdgpu_mn_read_lock - take the read side lock for this notifier
- *
- * @amn: our notifier
- */
-static int amdgpu_mn_read_lock(struct amdgpu_mn *amn, bool blockable)
-{
- if (blockable)
- mutex_lock(&amn->read_lock);
- else if (!mutex_trylock(&amn->read_lock))
- return -EAGAIN;
-
- if (atomic_inc_return(&amn->recursion) == 1)
- down_read_non_owner(&amn->lock);
- mutex_unlock(&amn->read_lock);
-
- return 0;
-}
-
-/**
- * amdgpu_mn_read_unlock - drop the read side lock for this notifier
- *
- * @amn: our notifier
- */
-static void amdgpu_mn_read_unlock(struct amdgpu_mn *amn)
-{
- if (atomic_dec_return(&amn->recursion) == 0)
- up_read_non_owner(&amn->lock);
-}
-
-/**
- * amdgpu_mn_invalidate_node - unmap all BOs of a node
- *
- * @node: the node with the BOs to unmap
- * @start: start of address range affected
- * @end: end of address range affected
+ * @mni: the range (mm) is about to update
+ * @range: details on the invalidation
+ * @cur_seq: Value to pass to mmu_interval_set_seq()
*
* Block for operations on BOs to finish and mark pages as accessed and
* potentially dirty.
*/
-static void amdgpu_mn_invalidate_node(struct amdgpu_mn_node *node,
- unsigned long start,
- unsigned long end)
+static bool amdgpu_mn_invalidate_gfx(struct mmu_interval_notifier *mni,
+ const struct mmu_notifier_range *range,
+ unsigned long cur_seq)
{
- struct amdgpu_bo *bo;
+ struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier);
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
long r;
- list_for_each_entry(bo, &node->bos, mn_list) {
+ if (!mmu_notifier_range_blockable(range))
+ return false;
- if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, end))
- continue;
+ mutex_lock(&adev->notifier_lock);
- r = reservation_object_wait_timeout_rcu(bo->tbo.resv,
- true, false, MAX_SCHEDULE_TIMEOUT);
- if (r <= 0)
- DRM_ERROR("(%ld) failed to wait for user bo\n", r);
+ mmu_interval_set_seq(mni, cur_seq);
- amdgpu_ttm_tt_mark_user_pages(bo->tbo.ttm);
- }
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, true, false,
+ MAX_SCHEDULE_TIMEOUT);
+ mutex_unlock(&adev->notifier_lock);
+ if (r <= 0)
+ DRM_ERROR("(%ld) failed to wait for user bo\n", r);
+ return true;
}
-/**
- * amdgpu_mn_invalidate_range_start_gfx - callback to notify about mm change
- *
- * @mn: our notifier
- * @mm: the mm this callback is about
- * @start: start of updated range
- * @end: end of updated range
- *
- * Block for operations on BOs to finish and mark pages as accessed and
- * potentially dirty.
- */
-static int amdgpu_mn_invalidate_range_start_gfx(struct mmu_notifier *mn,
- struct mm_struct *mm,
- unsigned long start,
- unsigned long end,
- bool blockable)
-{
- struct amdgpu_mn *amn = container_of(mn, struct amdgpu_mn, mn);
- struct interval_tree_node *it;
-
- /* notification is exclusive, but interval is inclusive */
- end -= 1;
-
- /* TODO we should be able to split locking for interval tree and
- * amdgpu_mn_invalidate_node
- */
- if (amdgpu_mn_read_lock(amn, blockable))
- return -EAGAIN;
-
- it = interval_tree_iter_first(&amn->objects, start, end);
- while (it) {
- struct amdgpu_mn_node *node;
-
- if (!blockable) {
- amdgpu_mn_read_unlock(amn);
- return -EAGAIN;
- }
-
- node = container_of(it, struct amdgpu_mn_node, it);
- it = interval_tree_iter_next(it, start, end);
-
- amdgpu_mn_invalidate_node(node, start, end);
- }
-
- return 0;
-}
-
-/**
- * amdgpu_mn_invalidate_range_start_hsa - callback to notify about mm change
- *
- * @mn: our notifier
- * @mm: the mm this callback is about
- * @start: start of updated range
- * @end: end of updated range
- *
- * We temporarily evict all BOs between start and end. This
- * necessitates evicting all user-mode queues of the process. The BOs
- * are restorted in amdgpu_mn_invalidate_range_end_hsa.
- */
-static int amdgpu_mn_invalidate_range_start_hsa(struct mmu_notifier *mn,
- struct mm_struct *mm,
- unsigned long start,
- unsigned long end,
- bool blockable)
-{
- struct amdgpu_mn *amn = container_of(mn, struct amdgpu_mn, mn);
- struct interval_tree_node *it;
-
- /* notification is exclusive, but interval is inclusive */
- end -= 1;
-
- if (amdgpu_mn_read_lock(amn, blockable))
- return -EAGAIN;
-
- it = interval_tree_iter_first(&amn->objects, start, end);
- while (it) {
- struct amdgpu_mn_node *node;
- struct amdgpu_bo *bo;
-
- if (!blockable) {
- amdgpu_mn_read_unlock(amn);
- return -EAGAIN;
- }
-
- node = container_of(it, struct amdgpu_mn_node, it);
- it = interval_tree_iter_next(it, start, end);
-
- list_for_each_entry(bo, &node->bos, mn_list) {
- struct kgd_mem *mem = bo->kfd_bo;
-
- if (amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm,
- start, end))
- amdgpu_amdkfd_evict_userptr(mem, mm);
- }
- }
-
- return 0;
-}
-
-/**
- * amdgpu_mn_invalidate_range_end - callback to notify about mm change
- *
- * @mn: our notifier
- * @mm: the mm this callback is about
- * @start: start of updated range
- * @end: end of updated range
- *
- * Release the lock again to allow new command submissions.
- */
-static void amdgpu_mn_invalidate_range_end(struct mmu_notifier *mn,
- struct mm_struct *mm,
- unsigned long start,
- unsigned long end)
-{
- struct amdgpu_mn *amn = container_of(mn, struct amdgpu_mn, mn);
-
- amdgpu_mn_read_unlock(amn);
-}
-
-static const struct mmu_notifier_ops amdgpu_mn_ops[] = {
- [AMDGPU_MN_TYPE_GFX] = {
- .release = amdgpu_mn_release,
- .invalidate_range_start = amdgpu_mn_invalidate_range_start_gfx,
- .invalidate_range_end = amdgpu_mn_invalidate_range_end,
- },
- [AMDGPU_MN_TYPE_HSA] = {
- .release = amdgpu_mn_release,
- .invalidate_range_start = amdgpu_mn_invalidate_range_start_hsa,
- .invalidate_range_end = amdgpu_mn_invalidate_range_end,
- },
+static const struct mmu_interval_notifier_ops amdgpu_mn_gfx_ops = {
+ .invalidate = amdgpu_mn_invalidate_gfx,
};
-/* Low bits of any reasonable mm pointer will be unused due to struct
- * alignment. Use these bits to make a unique key from the mm pointer
- * and notifier type.
- */
-#define AMDGPU_MN_KEY(mm, type) ((unsigned long)(mm) + (type))
-
/**
- * amdgpu_mn_get - create notifier context
+ * amdgpu_mn_invalidate_hsa - callback to notify about mm change
*
- * @adev: amdgpu device pointer
- * @type: type of MMU notifier context
+ * @mni: the range (mm) is about to update
+ * @range: details on the invalidation
+ * @cur_seq: Value to pass to mmu_interval_set_seq()
*
- * Creates a notifier context for current->mm.
+ * We temporarily evict the BO attached to this range. This necessitates
+ * evicting all user-mode queues of the process.
*/
-struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
- enum amdgpu_mn_type type)
+static bool amdgpu_mn_invalidate_hsa(struct mmu_interval_notifier *mni,
+ const struct mmu_notifier_range *range,
+ unsigned long cur_seq)
{
- struct mm_struct *mm = current->mm;
- struct amdgpu_mn *amn;
- unsigned long key = AMDGPU_MN_KEY(mm, type);
- int r;
+ struct amdgpu_bo *bo = container_of(mni, struct amdgpu_bo, notifier);
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
- mutex_lock(&adev->mn_lock);
- if (down_write_killable(&mm->mmap_sem)) {
- mutex_unlock(&adev->mn_lock);
- return ERR_PTR(-EINTR);
- }
+ if (!mmu_notifier_range_blockable(range))
+ return false;
- hash_for_each_possible(adev->mn_hash, amn, node, key)
- if (AMDGPU_MN_KEY(amn->mm, amn->type) == key)
- goto release_locks;
+ mutex_lock(&adev->notifier_lock);
- amn = kzalloc(sizeof(*amn), GFP_KERNEL);
- if (!amn) {
- amn = ERR_PTR(-ENOMEM);
- goto release_locks;
- }
+ mmu_interval_set_seq(mni, cur_seq);
- amn->adev = adev;
- amn->mm = mm;
- init_rwsem(&amn->lock);
- amn->type = type;
- amn->mn.ops = &amdgpu_mn_ops[type];
- amn->objects = RB_ROOT_CACHED;
- mutex_init(&amn->read_lock);
- atomic_set(&amn->recursion, 0);
+ amdgpu_amdkfd_evict_userptr(bo->kfd_bo, bo->notifier.mm);
+ mutex_unlock(&adev->notifier_lock);
- r = __mmu_notifier_register(&amn->mn, mm);
- if (r)
- goto free_amn;
-
- hash_add(adev->mn_hash, &amn->node, AMDGPU_MN_KEY(mm, type));
-
-release_locks:
- up_write(&mm->mmap_sem);
- mutex_unlock(&adev->mn_lock);
-
- return amn;
-
-free_amn:
- up_write(&mm->mmap_sem);
- mutex_unlock(&adev->mn_lock);
- kfree(amn);
-
- return ERR_PTR(r);
+ return true;
}
+
+static const struct mmu_interval_notifier_ops amdgpu_mn_hsa_ops = {
+ .invalidate = amdgpu_mn_invalidate_hsa,
+};
/**
* amdgpu_mn_register - register a BO for notifier updates
@@ -439,59 +127,18 @@
* @bo: amdgpu buffer object
* @addr: userptr addr we should monitor
*
- * Registers an MMU notifier for the given BO at the specified address.
+ * Registers a mmu_notifier for the given BO at the specified address.
* Returns 0 on success, -ERRNO if anything goes wrong.
*/
int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
{
- unsigned long end = addr + amdgpu_bo_size(bo) - 1;
- struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
- enum amdgpu_mn_type type =
- bo->kfd_bo ? AMDGPU_MN_TYPE_HSA : AMDGPU_MN_TYPE_GFX;
- struct amdgpu_mn *amn;
- struct amdgpu_mn_node *node = NULL, *new_node;
- struct list_head bos;
- struct interval_tree_node *it;
-
- amn = amdgpu_mn_get(adev, type);
- if (IS_ERR(amn))
- return PTR_ERR(amn);
-
- new_node = kmalloc(sizeof(*new_node), GFP_KERNEL);
- if (!new_node)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&bos);
-
- down_write(&amn->lock);
-
- while ((it = interval_tree_iter_first(&amn->objects, addr, end))) {
- kfree(node);
- node = container_of(it, struct amdgpu_mn_node, it);
- interval_tree_remove(&node->it, &amn->objects);
- addr = min(it->start, addr);
- end = max(it->last, end);
- list_splice(&node->bos, &bos);
- }
-
- if (!node)
- node = new_node;
- else
- kfree(new_node);
-
- bo->mn = amn;
-
- node->it.start = addr;
- node->it.last = end;
- INIT_LIST_HEAD(&node->bos);
- list_splice(&bos, &node->bos);
- list_add(&bo->mn_list, &node->bos);
-
- interval_tree_insert(&node->it, &amn->objects);
-
- up_write(&amn->lock);
-
- return 0;
+ if (bo->kfd_bo)
+ return mmu_interval_notifier_insert(&bo->notifier, current->mm,
+ addr, amdgpu_bo_size(bo),
+ &amdgpu_mn_hsa_ops);
+ return mmu_interval_notifier_insert(&bo->notifier, current->mm, addr,
+ amdgpu_bo_size(bo),
+ &amdgpu_mn_gfx_ops);
}
/**
@@ -499,39 +146,12 @@
*
* @bo: amdgpu buffer object
*
- * Remove any registration of MMU notifier updates from the buffer object.
+ * Remove any registration of mmu notifier updates from the buffer object.
*/
void amdgpu_mn_unregister(struct amdgpu_bo *bo)
{
- struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
- struct amdgpu_mn *amn;
- struct list_head *head;
-
- mutex_lock(&adev->mn_lock);
-
- amn = bo->mn;
- if (amn == NULL) {
- mutex_unlock(&adev->mn_lock);
+ if (!bo->notifier.mm)
return;
- }
-
- down_write(&amn->lock);
-
- /* save the next list entry for later */
- head = bo->mn_list.next;
-
- bo->mn = NULL;
- list_del_init(&bo->mn_list);
-
- if (list_empty(head)) {
- struct amdgpu_mn_node *node;
-
- node = container_of(head, struct amdgpu_mn_node, bos);
- interval_tree_remove(&node->it, &amn->objects);
- kfree(node);
- }
-
- up_write(&amn->lock);
- mutex_unlock(&adev->mn_lock);
+ mmu_interval_notifier_remove(&bo->notifier);
+ bo->notifier.mm = NULL;
}
-
--
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