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drm: Constify the drm_mm API

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Mark up the pointers as constant through the API where appropriate.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161216074718.32500-5-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-12-16 07:46:42 +00:00 committed by Daniel Vetter
parent ad579002c8
commit 45b186f111
3 changed files with 26 additions and 27 deletions
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24
drivers/gpu/drm/drm_mm.c
View File

@ -174,9 +174,9 @@ INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
START, LAST, static inline, drm_mm_interval_tree)
struct drm_mm_node *
__drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last)
__drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last)
{
return drm_mm_interval_tree_iter_first(&mm->interval_tree,
return drm_mm_interval_tree_iter_first((struct rb_root *)&mm->interval_tree,
start, last);
}
EXPORT_SYMBOL(__drm_mm_interval_first);
@ -881,9 +881,9 @@ EXPORT_SYMBOL(drm_mm_scan_remove_block);
* True if the allocator is completely free, false if there's still a node
* allocated in it.
*/
bool drm_mm_clean(struct drm_mm * mm)
bool drm_mm_clean(const struct drm_mm *mm)
{
struct list_head *head = __drm_mm_nodes(mm);
const struct list_head *head = __drm_mm_nodes(mm);
return (head->next->next == head);
}
@ -897,7 +897,7 @@ EXPORT_SYMBOL(drm_mm_clean);
*
* Note that @mm must be cleared to 0 before calling this function.
*/
void drm_mm_init(struct drm_mm * mm, u64 start, u64 size)
void drm_mm_init(struct drm_mm *mm, u64 start, u64 size)
{
INIT_LIST_HEAD(&mm->hole_stack);
mm->scanned_blocks = 0;
@ -936,8 +936,8 @@ void drm_mm_takedown(struct drm_mm *mm)
}
EXPORT_SYMBOL(drm_mm_takedown);
static u64 drm_mm_debug_hole(struct drm_mm_node *entry,
const char *prefix)
static u64 drm_mm_debug_hole(const struct drm_mm_node *entry,
const char *prefix)
{
u64 hole_start, hole_end, hole_size;
@ -958,9 +958,9 @@ static u64 drm_mm_debug_hole(struct drm_mm_node *entry,
* @mm: drm_mm allocator to dump
* @prefix: prefix to use for dumping to dmesg
*/
void drm_mm_debug_table(struct drm_mm *mm, const char *prefix)
void drm_mm_debug_table(const struct drm_mm *mm, const char *prefix)
{
struct drm_mm_node *entry;
const struct drm_mm_node *entry;
u64 total_used = 0, total_free = 0, total = 0;
total_free += drm_mm_debug_hole(&mm->head_node, prefix);
@ -979,7 +979,7 @@ void drm_mm_debug_table(struct drm_mm *mm, const char *prefix)
EXPORT_SYMBOL(drm_mm_debug_table);
#if defined(CONFIG_DEBUG_FS)
static u64 drm_mm_dump_hole(struct seq_file *m, struct drm_mm_node *entry)
static u64 drm_mm_dump_hole(struct seq_file *m, const struct drm_mm_node *entry)
{
u64 hole_start, hole_end, hole_size;
@ -1000,9 +1000,9 @@ static u64 drm_mm_dump_hole(struct seq_file *m, struct drm_mm_node *entry)
* @m: seq_file to dump to
* @mm: drm_mm allocator to dump
*/
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm)
int drm_mm_dump_table(struct seq_file *m, const struct drm_mm *mm)
{
struct drm_mm_node *entry;
const struct drm_mm_node *entry;
u64 total_used = 0, total_free = 0, total = 0;
total_free += drm_mm_dump_hole(m, &mm->head_node);

2
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -2721,7 +2721,7 @@ void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
dma_unmap_sg(kdev, pages->sgl, pages->nents, PCI_DMA_BIDIRECTIONAL);
}
static void i915_gtt_color_adjust(struct drm_mm_node *node,
static void i915_gtt_color_adjust(const struct drm_mm_node *node,
unsigned long color,
u64 *start,
u64 *end)

27
include/drm/drm_mm.h
View File

@ -102,7 +102,8 @@ struct drm_mm {
u64 scan_end;
struct drm_mm_node *prev_scanned_node;
void (*color_adjust)(struct drm_mm_node *node, unsigned long color,
void (*color_adjust)(const struct drm_mm_node *node,
unsigned long color,
u64 *start, u64 *end);
};
@ -116,7 +117,7 @@ struct drm_mm {
* Returns:
* True if the @node is allocated.
*/
static inline bool drm_mm_node_allocated(struct drm_mm_node *node)
static inline bool drm_mm_node_allocated(const struct drm_mm_node *node)
{
return node->allocated;
}
@ -131,12 +132,12 @@ static inline bool drm_mm_node_allocated(struct drm_mm_node *node)
* Returns:
* True if the @mm is initialized.
*/
static inline bool drm_mm_initialized(struct drm_mm *mm)
static inline bool drm_mm_initialized(const struct drm_mm *mm)
{
return mm->hole_stack.next;
}
static inline u64 __drm_mm_hole_node_start(struct drm_mm_node *hole_node)
static inline u64 __drm_mm_hole_node_start(const struct drm_mm_node *hole_node)
{
return hole_node->start + hole_node->size;
}
@ -152,13 +153,13 @@ static inline u64 __drm_mm_hole_node_start(struct drm_mm_node *hole_node)
* Returns:
* Start of the subsequent hole.
*/
static inline u64 drm_mm_hole_node_start(struct drm_mm_node *hole_node)
static inline u64 drm_mm_hole_node_start(const struct drm_mm_node *hole_node)
{
BUG_ON(!hole_node->hole_follows);
return __drm_mm_hole_node_start(hole_node);
}
static inline u64 __drm_mm_hole_node_end(struct drm_mm_node *hole_node)
static inline u64 __drm_mm_hole_node_end(const struct drm_mm_node *hole_node)
{
return list_next_entry(hole_node, node_list)->start;
}
@ -174,7 +175,7 @@ static inline u64 __drm_mm_hole_node_end(struct drm_mm_node *hole_node)
* Returns:
* End of the subsequent hole.
*/
static inline u64 drm_mm_hole_node_end(struct drm_mm_node *hole_node)
static inline u64 drm_mm_hole_node_end(const struct drm_mm_node *hole_node)
{
return __drm_mm_hole_node_end(hole_node);
}
@ -314,14 +315,12 @@ static inline int drm_mm_insert_node_in_range(struct drm_mm *mm,
void drm_mm_remove_node(struct drm_mm_node *node);
void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new);
void drm_mm_init(struct drm_mm *mm,
u64 start,
u64 size);
void drm_mm_init(struct drm_mm *mm, u64 start, u64 size);
void drm_mm_takedown(struct drm_mm *mm);
bool drm_mm_clean(struct drm_mm *mm);
bool drm_mm_clean(const struct drm_mm *mm);
struct drm_mm_node *
__drm_mm_interval_first(struct drm_mm *mm, u64 start, u64 last);
__drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last);
/**
* drm_mm_for_each_node_in_range - iterator to walk over a range of
@ -355,9 +354,9 @@ void drm_mm_init_scan_with_range(struct drm_mm *mm,
bool drm_mm_scan_add_block(struct drm_mm_node *node);
bool drm_mm_scan_remove_block(struct drm_mm_node *node);
void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);
void drm_mm_debug_table(const struct drm_mm *mm, const char *prefix);
#ifdef CONFIG_DEBUG_FS
int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
int drm_mm_dump_table(struct seq_file *m, const struct drm_mm *mm);
#endif
#endif