[PATCH 1/4] drm/mm: add "best_match" flag to drm_mm_insert_node()
David Herrmann
dh.herrmann at gmail.com
Sat Jul 27 04:36:27 PDT 2013
Add a "best_match" flag similar to the drm_mm_search_*() helpers so we
can convert TTM to use them in follow up patches. We can also inline the
non-generic helpers and move them into the header to allow compile-time
optimizations.
To make calls to drm_mm_{search,insert}_node() more readable, this
converts the boolean argument to a flagset. There are pending patches that
add additional flags for top-down allocators and more.
v2:
- use flag parameter instead of boolean "best_match"
- convert *_search_free() helpers to also use flags argument
Signed-off-by: David Herrmann <dh.herrmann at gmail.com>
---
drivers/gpu/drm/drm_mm.c | 37 ++++++++---------------
drivers/gpu/drm/drm_vma_manager.c | 4 +--
drivers/gpu/drm/i915/i915_gem.c | 3 +-
drivers/gpu/drm/i915/i915_gem_stolen.c | 12 +++++---
drivers/gpu/drm/sis/sis_mm.c | 6 ++--
drivers/gpu/drm/ttm/ttm_bo_manager.c | 3 +-
drivers/gpu/drm/via/via_mm.c | 4 +--
include/drm/drm_mm.h | 54 ++++++++++++++++++++++------------
8 files changed, 68 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index fe304f9..9a38327 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -212,12 +212,13 @@ EXPORT_SYMBOL(drm_mm_get_block_generic);
*/
int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment,
- unsigned long color)
+ unsigned long color,
+ enum drm_mm_search_flags flags)
{
struct drm_mm_node *hole_node;
hole_node = drm_mm_search_free_generic(mm, size, alignment,
- color, 0);
+ color, flags);
if (!hole_node)
return -ENOSPC;
@@ -226,13 +227,6 @@ int drm_mm_insert_node_generic(struct drm_mm *mm, struct drm_mm_node *node,
}
EXPORT_SYMBOL(drm_mm_insert_node_generic);
-int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node,
- unsigned long size, unsigned alignment)
-{
- return drm_mm_insert_node_generic(mm, node, size, alignment, 0);
-}
-EXPORT_SYMBOL(drm_mm_insert_node);
-
static void drm_mm_insert_helper_range(struct drm_mm_node *hole_node,
struct drm_mm_node *node,
unsigned long size, unsigned alignment,
@@ -313,13 +307,14 @@ EXPORT_SYMBOL(drm_mm_get_block_range_generic);
*/
int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *node,
unsigned long size, unsigned alignment, unsigned long color,
- unsigned long start, unsigned long end)
+ unsigned long start, unsigned long end,
+ enum drm_mm_search_flags flags)
{
struct drm_mm_node *hole_node;
hole_node = drm_mm_search_free_in_range_generic(mm,
size, alignment, color,
- start, end, 0);
+ start, end, flags);
if (!hole_node)
return -ENOSPC;
@@ -330,14 +325,6 @@ int drm_mm_insert_node_in_range_generic(struct drm_mm *mm, struct drm_mm_node *n
}
EXPORT_SYMBOL(drm_mm_insert_node_in_range_generic);
-int drm_mm_insert_node_in_range(struct drm_mm *mm, struct drm_mm_node *node,
- unsigned long size, unsigned alignment,
- unsigned long start, unsigned long end)
-{
- return drm_mm_insert_node_in_range_generic(mm, node, size, alignment, 0, start, end);
-}
-EXPORT_SYMBOL(drm_mm_insert_node_in_range);
-
/**
* Remove a memory node from the allocator.
*/
@@ -413,7 +400,7 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
unsigned long size,
unsigned alignment,
unsigned long color,
- bool best_match)
+ enum drm_mm_search_flags flags)
{
struct drm_mm_node *entry;
struct drm_mm_node *best;
@@ -436,7 +423,7 @@ struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
if (!check_free_hole(adj_start, adj_end, size, alignment))
continue;
- if (!best_match)
+ if (!(flags & DRM_MM_SEARCH_BEST))
return entry;
if (entry->size < best_size) {
@@ -455,7 +442,7 @@ struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
unsigned long color,
unsigned long start,
unsigned long end,
- bool best_match)
+ enum drm_mm_search_flags flags)
{
struct drm_mm_node *entry;
struct drm_mm_node *best;
@@ -483,7 +470,7 @@ struct drm_mm_node *drm_mm_search_free_in_range_generic(const struct drm_mm *mm,
if (!check_free_hole(adj_start, adj_end, size, alignment))
continue;
- if (!best_match)
+ if (!(flags & DRM_MM_SEARCH_BEST))
return entry;
if (entry->size < best_size) {
@@ -629,8 +616,8 @@ EXPORT_SYMBOL(drm_mm_scan_add_block);
* corrupted.
*
* When the scan list is empty, the selected memory nodes can be freed. An
- * immediately following drm_mm_search_free with best_match = 0 will then return
- * the just freed block (because its at the top of the free_stack list).
+ * immediately following drm_mm_search_free with !DRM_MM_SEARCH_BEST will then
+ * return the just freed block (because its at the top of the free_stack list).
*
* Returns one if this block should be evicted, zero otherwise. Will always
* return zero when no hole has been found.
diff --git a/drivers/gpu/drm/drm_vma_manager.c b/drivers/gpu/drm/drm_vma_manager.c
index b966cea..3837481 100644
--- a/drivers/gpu/drm/drm_vma_manager.c
+++ b/drivers/gpu/drm/drm_vma_manager.c
@@ -241,8 +241,8 @@ int drm_vma_offset_add(struct drm_vma_offset_manager *mgr,
goto out_unlock;
}
- ret = drm_mm_insert_node_generic(&mgr->vm_addr_space_mm,
- &node->vm_node, pages, 0, 0);
+ ret = drm_mm_insert_node(&mgr->vm_addr_space_mm, &node->vm_node,
+ pages, 0, DRM_MM_SEARCH_DEFAULT);
if (ret)
goto out_unlock;
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 8673a00..f3065a0 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3092,7 +3092,8 @@ search_free:
ret = drm_mm_insert_node_in_range_generic(&dev_priv->mm.gtt_space,
&obj->gtt_space,
size, alignment,
- obj->cache_level, 0, gtt_max);
+ obj->cache_level, 0, gtt_max,
+ DRM_MM_SEARCH_DEFAULT);
if (ret) {
ret = i915_gem_evict_something(dev, size, alignment,
obj->cache_level,
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 5521833..e355170 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -115,10 +115,12 @@ static int i915_setup_compression(struct drm_device *dev, int size)
/* Try to over-allocate to reduce reallocations and fragmentation */
compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen,
- size <<= 1, 4096, 0);
+ size <<= 1, 4096,
+ DRM_MM_SEARCH_DEFAULT);
if (!compressed_fb)
compressed_fb = drm_mm_search_free(&dev_priv->mm.stolen,
- size >>= 1, 4096, 0);
+ size >>= 1, 4096,
+ DRM_MM_SEARCH_DEFAULT);
if (compressed_fb)
compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
if (!compressed_fb)
@@ -130,7 +132,8 @@ static int i915_setup_compression(struct drm_device *dev, int size)
I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
} else {
compressed_llb = drm_mm_search_free(&dev_priv->mm.stolen,
- 4096, 4096, 0);
+ 4096, 4096,
+ DRM_MM_SEARCH_DEFAULT);
if (compressed_llb)
compressed_llb = drm_mm_get_block(compressed_llb,
4096, 4096);
@@ -328,7 +331,8 @@ i915_gem_object_create_stolen(struct drm_device *dev, u32 size)
if (size == 0)
return NULL;
- stolen = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096, 0);
+ stolen = drm_mm_search_free(&dev_priv->mm.stolen, size, 4096,
+ DRM_MM_SEARCH_DEFAULT);
if (stolen)
stolen = drm_mm_get_block(stolen, size, 4096);
if (stolen == NULL)
diff --git a/drivers/gpu/drm/sis/sis_mm.c b/drivers/gpu/drm/sis/sis_mm.c
index 9a43d98..23a2349 100644
--- a/drivers/gpu/drm/sis/sis_mm.c
+++ b/drivers/gpu/drm/sis/sis_mm.c
@@ -109,7 +109,8 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
if (pool == AGP_TYPE) {
retval = drm_mm_insert_node(&dev_priv->agp_mm,
&item->mm_node,
- mem->size, 0);
+ mem->size, 0,
+ DRM_MM_SEARCH_DEFAULT);
offset = item->mm_node.start;
} else {
#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
@@ -121,7 +122,8 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
#else
retval = drm_mm_insert_node(&dev_priv->vram_mm,
&item->mm_node,
- mem->size, 0);
+ mem->size, 0,
+ DRM_MM_SEARCH_DEFAULT);
offset = item->mm_node.start;
#endif
}
diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
index e4367f9..e4be29e 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
@@ -69,7 +69,8 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
spin_lock(&rman->lock);
node = drm_mm_search_free_in_range(mm,
mem->num_pages, mem->page_alignment,
- placement->fpfn, lpfn, 1);
+ placement->fpfn, lpfn,
+ DRM_MM_SEARCH_BEST);
if (unlikely(node == NULL)) {
spin_unlock(&rman->lock);
return 0;
diff --git a/drivers/gpu/drm/via/via_mm.c b/drivers/gpu/drm/via/via_mm.c
index 0ab93ff..7e3ad87 100644
--- a/drivers/gpu/drm/via/via_mm.c
+++ b/drivers/gpu/drm/via/via_mm.c
@@ -140,11 +140,11 @@ int via_mem_alloc(struct drm_device *dev, void *data,
if (mem->type == VIA_MEM_AGP)
retval = drm_mm_insert_node(&dev_priv->agp_mm,
&item->mm_node,
- tmpSize, 0);
+ tmpSize, 0, DRM_MM_SEARCH_DEFAULT);
else
retval = drm_mm_insert_node(&dev_priv->vram_mm,
&item->mm_node,
- tmpSize, 0);
+ tmpSize, 0, DRM_MM_SEARCH_DEFAULT);
if (retval)
goto fail_alloc;
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index 98cb50e..439d1a1 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -44,6 +44,11 @@
#include <linux/seq_file.h>
#endif
+enum drm_mm_search_flags {
+ DRM_MM_SEARCH_DEFAULT = 0,
+ DRM_MM_SEARCH_BEST = 1 << 0,
+};
+
struct drm_mm_node {
struct list_head node_list;
struct list_head hole_stack;
@@ -189,28 +194,41 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
start, end, 1);
}
-extern int drm_mm_insert_node(struct drm_mm *mm,
- struct drm_mm_node *node,
- unsigned long size,
- unsigned alignment);
-extern int drm_mm_insert_node_in_range(struct drm_mm *mm,
- struct drm_mm_node *node,
- unsigned long size,
- unsigned alignment,
- unsigned long start,
- unsigned long end);
extern int drm_mm_insert_node_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
- unsigned long color);
+ unsigned long color,
+ enum drm_mm_search_flags flags);
+static inline int drm_mm_insert_node(struct drm_mm *mm,
+ struct drm_mm_node *node,
+ unsigned long size,
+ unsigned alignment,
+ enum drm_mm_search_flags flags)
+{
+ return drm_mm_insert_node_generic(mm, node, size, alignment, 0, flags);
+}
+
extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
unsigned long color,
unsigned long start,
- unsigned long end);
+ unsigned long end,
+ enum drm_mm_search_flags flags);
+static inline int drm_mm_insert_node_in_range(struct drm_mm *mm,
+ struct drm_mm_node *node,
+ unsigned long size,
+ unsigned alignment,
+ unsigned long start,
+ unsigned long end,
+ enum drm_mm_search_flags flags)
+{
+ return drm_mm_insert_node_in_range_generic(mm, node, size, alignment,
+ 0, start, end, flags);
+}
+
extern void drm_mm_put_block(struct drm_mm_node *cur);
extern void drm_mm_remove_node(struct drm_mm_node *node);
extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
@@ -218,7 +236,7 @@ extern struct drm_mm_node *drm_mm_search_free_generic(const struct drm_mm *mm,
unsigned long size,
unsigned alignment,
unsigned long color,
- bool best_match);
+ enum drm_mm_search_flags flags);
extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
const struct drm_mm *mm,
unsigned long size,
@@ -226,13 +244,13 @@ extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
unsigned long color,
unsigned long start,
unsigned long end,
- bool best_match);
+ enum drm_mm_search_flags flags);
static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
unsigned long size,
unsigned alignment,
- bool best_match)
+ enum drm_mm_search_flags flags)
{
- return drm_mm_search_free_generic(mm,size, alignment, 0, best_match);
+ return drm_mm_search_free_generic(mm,size, alignment, 0, flags);
}
static inline struct drm_mm_node *drm_mm_search_free_in_range(
const struct drm_mm *mm,
@@ -240,10 +258,10 @@ static inline struct drm_mm_node *drm_mm_search_free_in_range(
unsigned alignment,
unsigned long start,
unsigned long end,
- bool best_match)
+ enum drm_mm_search_flags flags)
{
return drm_mm_search_free_in_range_generic(mm, size, alignment, 0,
- start, end, best_match);
+ start, end, flags);
}
extern void drm_mm_init(struct drm_mm *mm,
--
1.8.3.4
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