The scan state occupies a large proportion of the struct drm_mm and is
rarely used and only contains temporary state. That makes it suitable to
moving to its struct and onto the stack of the callers.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/drm_mm.c | 128 ++++++++++++++++++--------------
drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 7 +-
drivers/gpu/drm/i915/i915_gem_evict.c | 20 +++--
drivers/gpu/drm/selftests/test-drm_mm.c | 85 +++++++++++----------
include/drm/drm_mm.h | 43 +++++++----
5 files changed, 166 insertions(+), 117 deletions(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index 38b680b68e47..2a636e838bad 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -574,7 +574,7 @@ static struct drm_mm_node *drm_mm_search_free_generic(const
struct drm_mm *mm,
u64 adj_end;
u64 best_size;
- DRM_MM_BUG_ON(mm->scanned_blocks);
+ DRM_MM_BUG_ON(mm->scan_active);
best = NULL;
best_size = ~0UL;
@@ -618,7 +618,7 @@ static struct drm_mm_node
*drm_mm_search_free_in_range_generic(const struct drm_
u64 adj_end;
u64 best_size;
- DRM_MM_BUG_ON(mm->scanned_blocks);
+ DRM_MM_BUG_ON(mm->scan_active);
best = NULL;
best_size = ~0UL;
@@ -693,7 +693,7 @@ EXPORT_SYMBOL(drm_mm_replace_node);
*
* The DRM range allocator supports this use-case through the scanning
* interfaces. First a scan operation needs to be initialized with
- * drm_mm_init_scan() or drm_mm_init_scan_with_range(). The the driver adds
+ * drm_mm_scan_init() or drm_mm_scan_init_with_range(). The the driver adds
* objects to the roaster (probably by walking an LRU list, but this can be
* freely implemented) until a suitable hole is found or there's no further
* evitable object.
@@ -710,7 +710,8 @@ EXPORT_SYMBOL(drm_mm_replace_node);
*/
/**
- * drm_mm_init_scan - initialize lru scanning
+ * drm_mm_scan_init - initialize lru scanning
+ * @scan: scan state
* @mm: drm_mm to scan
* @size: size of the allocation
* @alignment: alignment of the allocation
@@ -724,24 +725,33 @@ EXPORT_SYMBOL(drm_mm_replace_node);
* As long as the scan list is non-empty, no other operations than
* adding/removing nodes to/from the scan list are allowed.
*/
-void drm_mm_init_scan(struct drm_mm *mm,
+void drm_mm_scan_init(struct drm_mm_scan *scan,
+ struct drm_mm *mm,
u64 size,
u64 alignment,
unsigned long color)
{
- mm->scan_color = color;
- mm->scan_alignment = alignment;
- mm->scan_size = size;
- mm->scanned_blocks = 0;
- mm->scan_hit_start = 0;
- mm->scan_hit_end = 0;
- mm->scan_check_range = 0;
- mm->prev_scanned_node = NULL;
+ DRM_MM_BUG_ON(size == 0);
+ DRM_MM_BUG_ON(mm->scan_active);
+
+ scan->mm = mm;
+
+ scan->color = color;
+ scan->alignment = alignment;
+ scan->size = size;
+
+ scan->check_range = 0;
+
+ scan->hit_start = 0;
+ scan->hit_end = 0;
+
+ scan->prev_scanned_node = NULL;
}
-EXPORT_SYMBOL(drm_mm_init_scan);
+EXPORT_SYMBOL(drm_mm_scan_init);
/**
- * drm_mm_init_scan - initialize range-restricted lru scanning
+ * drm_mm_scan_init_with_range - initialize range-restricted lru scanning
+ * @scan: scan state
* @mm: drm_mm to scan
* @size: size of the allocation
* @alignment: alignment of the allocation
@@ -757,25 +767,34 @@ EXPORT_SYMBOL(drm_mm_init_scan);
* As long as the scan list is non-empty, no other operations than
* adding/removing nodes to/from the scan list are allowed.
*/
-void drm_mm_init_scan_with_range(struct drm_mm *mm,
+void drm_mm_scan_init_with_range(struct drm_mm_scan *scan,
+ struct drm_mm *mm,
u64 size,
u64 alignment,
unsigned long color,
u64 start,
u64 end)
{
- mm->scan_color = color;
- mm->scan_alignment = alignment;
- mm->scan_size = size;
- mm->scanned_blocks = 0;
- mm->scan_hit_start = 0;
- mm->scan_hit_end = 0;
- mm->scan_start = start;
- mm->scan_end = end;
- mm->scan_check_range = 1;
- mm->prev_scanned_node = NULL;
+ DRM_MM_BUG_ON(size == 0);
+ DRM_MM_BUG_ON(mm->scan_active);
+
+ scan->mm = mm;
+
+ scan->color = color;
+ scan->alignment = alignment;
+ scan->size = size;
+
+ DRM_MM_BUG_ON(end <= start);
+ scan->range_start = start;
+ scan->range_end = end;
+ scan->check_range = 1;
+
+ scan->hit_start = 0;
+ scan->hit_end = 0;
+
+ scan->prev_scanned_node = NULL;
}
-EXPORT_SYMBOL(drm_mm_init_scan_with_range);
+EXPORT_SYMBOL(drm_mm_scan_init_with_range);
/**
* drm_mm_scan_add_block - add a node to the scan list
@@ -787,46 +806,46 @@ EXPORT_SYMBOL(drm_mm_init_scan_with_range);
* Returns:
* True if a hole has been found, false otherwise.
*/
-bool drm_mm_scan_add_block(struct drm_mm_node *node)
+bool drm_mm_scan_add_block(struct drm_mm_scan *scan,
+ struct drm_mm_node *node)
{
- struct drm_mm *mm = node->mm;
+ struct drm_mm *mm = scan->mm;
struct drm_mm_node *prev_node;
u64 hole_start, hole_end;
u64 adj_start, adj_end;
- mm->scanned_blocks++;
-
+ DRM_MM_BUG_ON(node->mm != mm);
+ DRM_MM_BUG_ON(!node->allocated);
DRM_MM_BUG_ON(node->scanned_block);
node->scanned_block = 1;
+ mm->scan_active++;
- prev_node = list_entry(node->node_list.prev, struct drm_mm_node,
- node_list);
+ prev_node = list_prev_entry(node, node_list);
node->scanned_preceeds_hole = prev_node->hole_follows;
prev_node->hole_follows = 1;
list_del(&node->node_list);
node->node_list.prev = &prev_node->node_list;
- node->node_list.next = &mm->prev_scanned_node->node_list;
- mm->prev_scanned_node = node;
+ node->node_list.next = &scan->prev_scanned_node->node_list;
+ scan->prev_scanned_node = node;
adj_start = hole_start = drm_mm_hole_node_start(prev_node);
adj_end = hole_end = drm_mm_hole_node_end(prev_node);
- if (mm->scan_check_range) {
- if (adj_start < mm->scan_start)
- adj_start = mm->scan_start;
- if (adj_end > mm->scan_end)
- adj_end = mm->scan_end;
+ if (scan->check_range) {
+ if (adj_start < scan->range_start)
+ adj_start = scan->range_start;
+ if (adj_end > scan->range_end)
+ adj_end = scan->range_end;
}
if (mm->color_adjust)
- mm->color_adjust(prev_node, mm->scan_color,
- &adj_start, &adj_end);
+ mm->color_adjust(prev_node, scan->color, &adj_start, &adj_end);
if (check_free_hole(adj_start, adj_end,
- mm->scan_size, mm->scan_alignment)) {
- mm->scan_hit_start = hole_start;
- mm->scan_hit_end = hole_end;
+ scan->size, scan->alignment)) {
+ scan->hit_start = hole_start;
+ scan->hit_end = hole_end;
return true;
}
@@ -850,24 +869,25 @@ EXPORT_SYMBOL(drm_mm_scan_add_block);
* True if this block should be evicted, false otherwise. Will always
* return false when no hole has been found.
*/
-bool drm_mm_scan_remove_block(struct drm_mm_node *node)
+bool drm_mm_scan_remove_block(struct drm_mm_scan *scan,
+ struct drm_mm_node *node)
{
- struct drm_mm *mm = node->mm;
struct drm_mm_node *prev_node;
- mm->scanned_blocks--;
-
+ DRM_MM_BUG_ON(node->mm != scan->mm);
DRM_MM_BUG_ON(!node->scanned_block);
node->scanned_block = 0;
- prev_node = list_entry(node->node_list.prev, struct drm_mm_node,
- node_list);
+ DRM_MM_BUG_ON(!node->mm->scan_active);
+ node->mm->scan_active--;
+
+ prev_node = list_prev_entry(node, node_list);
prev_node->hole_follows = node->scanned_preceeds_hole;
list_add(&node->node_list, &prev_node->node_list);
- return (drm_mm_hole_node_end(node) > mm->scan_hit_start &&
- node->start < mm->scan_hit_end);
+ return (drm_mm_hole_node_end(node) > scan->hit_start &&
+ node->start < scan->hit_end);
}
EXPORT_SYMBOL(drm_mm_scan_remove_block);
@@ -882,7 +902,7 @@ EXPORT_SYMBOL(drm_mm_scan_remove_block);
void drm_mm_init(struct drm_mm *mm, u64 start, u64 size)
{
INIT_LIST_HEAD(&mm->hole_stack);
- mm->scanned_blocks = 0;
+ mm->scan_active = 0;
/* Clever trick to avoid a special case in the free hole tracking. */
INIT_LIST_HEAD(&mm->head_node.node_list);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index 169ac96e8f08..fe1e886dcabb 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -113,6 +113,7 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu
*mmu,
while (1) {
struct etnaviv_vram_mapping *m, *n;
+ struct drm_mm_scan scan;
struct list_head list;
bool found;
@@ -134,7 +135,7 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu
*mmu,
}
/* Try to retire some entries */
- drm_mm_init_scan(&mmu->mm, size, 0, 0);
+ drm_mm_scan_init(&scan, &mmu->mm, size, 0, 0);
found = 0;
INIT_LIST_HEAD(&list);
@@ -151,7 +152,7 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu
*mmu,
continue;
list_add(&free->scan_node, &list);
- if (drm_mm_scan_add_block(&free->vram_node)) {
+ if (drm_mm_scan_add_block(&scan, &free->vram_node)) {
found = true;
break;
}
@@ -171,7 +172,7 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu
*mmu,
* can leave the block pinned.
*/
list_for_each_entry_safe(m, n, &list, scan_node)
- if (!drm_mm_scan_remove_block(&m->vram_node))
+ if (!drm_mm_scan_remove_block(&scan, &m->vram_node))
list_del_init(&m->scan_node);
/*
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c
b/drivers/gpu/drm/i915/i915_gem_evict.c
index fa40100146ea..096038ef0033 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -51,7 +51,10 @@ static bool ggtt_is_idle(struct drm_i915_private *dev_priv)
}
static bool
-mark_free(struct i915_vma *vma, unsigned int flags, struct list_head *unwind)
+mark_free(struct drm_mm_scan *scan,
+ struct i915_vma *vma,
+ unsigned int flags,
+ struct list_head *unwind)
{
if (i915_vma_is_pinned(vma))
return false;
@@ -63,7 +66,7 @@ mark_free(struct i915_vma *vma, unsigned int flags, struct
list_head *unwind)
return false;
list_add(&vma->exec_list, unwind);
- return drm_mm_scan_add_block(&vma->node);
+ return drm_mm_scan_add_block(scan, &vma->node);
}
/**
@@ -97,6 +100,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
unsigned flags)
{
struct drm_i915_private *dev_priv = vm->i915;
+ struct drm_mm_scan scan;
struct list_head eviction_list;
struct list_head *phases[] = {
&vm->inactive_list,
@@ -123,11 +127,12 @@ i915_gem_evict_something(struct i915_address_space *vm,
* object on the TAIL.
*/
if (start != 0 || end != vm->total) {
- drm_mm_init_scan_with_range(&vm->mm, min_size,
+ drm_mm_scan_init_with_range(&scan, &vm->mm, min_size,
alignment, cache_level,
start, end);
} else
- drm_mm_init_scan(&vm->mm, min_size, alignment, cache_level);
+ drm_mm_scan_init(&scan, &vm->mm, min_size,
+ alignment, cache_level);
if (flags & PIN_NONBLOCK)
phases[1] = NULL;
@@ -137,13 +142,13 @@ i915_gem_evict_something(struct i915_address_space *vm,
phase = phases;
do {
list_for_each_entry(vma, *phase, vm_link)
- if (mark_free(vma, flags, &eviction_list))
+ if (mark_free(&scan, vma, flags, &eviction_list))
goto found;
} while (*++phase);
/* Nothing found, clean up and bail out! */
list_for_each_entry_safe(vma, next, &eviction_list, exec_list) {
- ret = drm_mm_scan_remove_block(&vma->node);
+ ret = drm_mm_scan_remove_block(&scan, &vma->node);
BUG_ON(ret);
INIT_LIST_HEAD(&vma->exec_list);
@@ -192,7 +197,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
* of any of our objects, thus corrupting the list).
*/
list_for_each_entry_safe(vma, next, &eviction_list, exec_list) {
- if (drm_mm_scan_remove_block(&vma->node))
+ if (drm_mm_scan_remove_block(&scan, &vma->node))
__i915_vma_pin(vma);
else
list_del_init(&vma->exec_list);
@@ -209,6 +214,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
if (ret == 0)
ret = i915_vma_unbind(vma);
}
+
return ret;
}
diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c
b/drivers/gpu/drm/selftests/test-drm_mm.c
index 4758062fee17..1180033f8a65 100644
--- a/drivers/gpu/drm/selftests/test-drm_mm.c
+++ b/drivers/gpu/drm/selftests/test-drm_mm.c
@@ -773,11 +773,11 @@ static int igt_align64(void *ignored)
return igt_align_pot(64);
}
-static void show_scan(const struct drm_mm *scan)
+static void show_scan(const struct drm_mm_scan *scan)
{
pr_info("scan: hit [%llx, %llx], size=%lld, align=%lld, color=%ld\n",
- scan->scan_hit_start, scan->scan_hit_end,
- scan->scan_size, scan->scan_alignment, scan->scan_color);
+ scan->hit_start, scan->hit_end,
+ scan->size, scan->alignment, scan->color);
}
static void show_holes(const struct drm_mm *mm, int count)
@@ -852,15 +852,16 @@ static int igt_evict(void *ignored)
if (1) {
LIST_HEAD(evict_list);
struct evict_node *e;
+ struct drm_mm_scan scan;
- drm_mm_init_scan(&mm, 1, 0, 0);
+ drm_mm_scan_init(&scan, &mm, 1, 0, 0);
for (m = 0; m < size; m++) {
e = &nodes[m];
list_add(&e->link, &evict_list);
- drm_mm_scan_add_block(&e->node);
+ drm_mm_scan_add_block(&scan, &e->node);
}
list_for_each_entry(e, &evict_list, link)
- drm_mm_scan_remove_block(&e->node);
+ drm_mm_scan_remove_block(&scan, &e->node);
for (m = 0; m < size; m++) {
e = &nodes[m];
@@ -897,19 +898,20 @@ static int igt_evict(void *ignored)
const int nsize = size / 2;
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int err;
- drm_mm_init_scan(&mm, nsize, n, 0);
+ drm_mm_scan_init(&scan, &mm, nsize, n, 0);
drm_random_reorder(order, size, &lcg_state);
for (m = 0; m < size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -927,7 +929,7 @@ static int igt_evict(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d\n",
nsize, n);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -956,20 +958,21 @@ static int igt_evict(void *ignored)
drm_for_each_prime(n, size) {
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int nsize = (size - n + 1) / 2;
int err;
- drm_mm_init_scan(&mm, nsize, n, 0);
+ drm_mm_scan_init(&scan, &mm, nsize, n, 0);
drm_random_reorder(order, size, &lcg_state);
for (m = 0; m < size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -987,7 +990,7 @@ static int igt_evict(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d (prime)\n",
nsize, n);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1068,20 +1071,21 @@ static int igt_evict_range(void *ignored)
const int nsize = range_size / 2;
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int err;
- drm_mm_init_scan_with_range(&mm, nsize, n, 0,
+ drm_mm_scan_init_with_range(&scan, &mm, nsize, n, 0,
range_start, range_end);
drm_random_reorder(order, size, &lcg_state);
for (m = 0; m < size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1100,7 +1104,7 @@ static int igt_evict_range(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d\n",
nsize, n);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1136,21 +1140,22 @@ static int igt_evict_range(void *ignored)
drm_for_each_prime(n, range_size) {
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int nsize = (range_size - n + 1) / 2;
int err;
- drm_mm_init_scan_with_range(&mm, nsize, n, 0,
+ drm_mm_scan_init_with_range(&scan, &mm, nsize, n, 0,
range_start, range_end);
drm_random_reorder(order, size, &lcg_state);
for (m = 0; m < size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1169,7 +1174,7 @@ static int igt_evict_range(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d (prime)\n",
nsize, n);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1631,19 +1636,20 @@ static int igt_color_evict(void *ignored)
unsigned int c = color++;
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int err;
- drm_mm_init_scan(&mm, nsize, n, c);
+ drm_mm_scan_init(&scan, &mm, nsize, n, c);
drm_random_reorder(order, total_size, &lcg_state);
for (m = 0; m < total_size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1662,7 +1668,7 @@ static int igt_color_evict(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d, color=%d, err=%d\n",
nsize, n, c, err);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1702,20 +1708,21 @@ static int igt_color_evict(void *ignored)
LIST_HEAD(evict_list);
unsigned int c = color++;
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int nsize = (total_size - n + 1) / 2;
int err;
- drm_mm_init_scan(&mm, nsize, n, c);
+ drm_mm_scan_init(&scan, &mm, nsize, n, c);
drm_random_reorder(order, total_size, &lcg_state);
for (m = 0; m < total_size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1734,7 +1741,7 @@ static int igt_color_evict(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d (prime), color=%d, err=%d\n",
nsize, n, c, err);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1832,20 +1839,21 @@ static int igt_color_evict_range(void *ignored)
unsigned int c = color++;
LIST_HEAD(evict_list);
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int err;
- drm_mm_init_scan_with_range(&mm, nsize, n, c,
+ drm_mm_scan_init_with_range(&scan, &mm, nsize, n, c,
range_start, range_end);
drm_random_reorder(order, total_size, &lcg_state);
for (m = 0; m < total_size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1865,7 +1873,7 @@ static int igt_color_evict_range(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d, color=%d, err=%d\n",
nsize, n, c, err);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
@@ -1905,21 +1913,22 @@ static int igt_color_evict_range(void *ignored)
LIST_HEAD(evict_list);
unsigned int c = color++;
struct evict_node *e, *en;
+ struct drm_mm_scan scan;
struct drm_mm_node tmp;
int nsize = (range_size - n + 1) / 2;
int err;
- drm_mm_init_scan_with_range(&mm, nsize, n, c,
+ drm_mm_scan_init_with_range(&scan, &mm, nsize, n, c,
range_start, range_end);
drm_random_reorder(order, total_size, &lcg_state);
for (m = 0; m < total_size; m++) {
e = &nodes[order[m]];
list_add(&e->link, &evict_list);
- if (drm_mm_scan_add_block(&e->node))
+ if (drm_mm_scan_add_block(&scan, &e->node))
break;
}
list_for_each_entry_safe(e, en, &evict_list, link) {
- if (!drm_mm_scan_remove_block(&e->node))
+ if (!drm_mm_scan_remove_block(&scan, &e->node))
list_del(&e->link);
}
if (list_empty(&evict_list)) {
@@ -1939,7 +1948,7 @@ static int igt_color_evict_range(void *ignored)
if (err) {
pr_err("Failed to insert into eviction hole: size=%d,
align=%d (prime), color=%d, err=%d\n",
nsize, n, c, err);
- show_scan(&mm);
+ show_scan(&scan);
show_holes(&mm, 3);
ret = err;
goto out;
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 1fa43c0f5936..571370352fe7 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -97,20 +97,29 @@ struct drm_mm {
/* Keep an interval_tree for fast lookup of drm_mm_nodes by address. */
struct rb_root interval_tree;
- unsigned int scan_check_range : 1;
- unsigned int scanned_blocks;
- unsigned long scan_color;
- u64 scan_alignment;
- u64 scan_size;
- u64 scan_hit_start;
- u64 scan_hit_end;
- u64 scan_start;
- u64 scan_end;
- struct drm_mm_node *prev_scanned_node;
-
void (*color_adjust)(const struct drm_mm_node *node,
unsigned long color,
u64 *start, u64 *end);
+
+ unsigned long scan_active;
+};
+
+struct drm_mm_scan {
+ struct drm_mm *mm;
+
+ u64 size;
+ u64 alignment;
+
+ u64 range_start;
+ u64 range_end;
+
+ u64 hit_start;
+ u64 hit_end;
+
+ struct drm_mm_node *prev_scanned_node;
+
+ unsigned long color;
+ bool check_range : 1;
};
/**
@@ -359,18 +368,22 @@ __drm_mm_interval_first(struct drm_mm *mm, u64 start, u64
last);
node__ && node__->start < (end__); \
node__ = list_next_entry(node__, node_list))
-void drm_mm_init_scan(struct drm_mm *mm,
+void drm_mm_scan_init(struct drm_mm_scan *scan,
+ struct drm_mm *mm,
u64 size,
u64 alignment,
unsigned long color);
-void drm_mm_init_scan_with_range(struct drm_mm *mm,
+void drm_mm_scan_init_with_range(struct drm_mm_scan *scan,
+ struct drm_mm *mm,
u64 size,
u64 alignment,
unsigned long color,
u64 start,
u64 end);
-bool drm_mm_scan_add_block(struct drm_mm_node *node);
-bool drm_mm_scan_remove_block(struct drm_mm_node *node);
+bool drm_mm_scan_add_block(struct drm_mm_scan *scan,
+ struct drm_mm_node *node);
+bool drm_mm_scan_remove_block(struct drm_mm_scan *scan,
+ struct drm_mm_node *node);
void drm_mm_debug_table(const struct drm_mm *mm, const char *prefix);
#ifdef CONFIG_DEBUG_FS
--
2.11.0
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