From 01d01ba947670cf58f22119fc126fdf39078f6ba Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 4 Dec 2009 10:18:02 +1000 Subject: drm/mm: fixup typo in debug functions. Free and used were reversed. Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/drm_mm.c') diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index c861d80fd77..59cebd7d3fc 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -386,7 +386,7 @@ int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm) else total_used += entry->size; } - seq_printf(m, "total: %d, used %d free %d\n", total, total_free, total_used); + seq_printf(m, "total: %d, used %d free %d\n", total, total_used, total_free); return 0; } EXPORT_SYMBOL(drm_mm_dump_table); -- cgit v1.2.3-70-g09d2 From a2e68e92d384d37c8cc6bb7206d43b1eb9bc3f08 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Mon, 7 Dec 2009 15:52:56 +0100 Subject: drm: Add search/get functions to get a block in a specific range These are required for changes to TTM. Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_mm.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_mm.h | 34 +++++++++++++++++++ 2 files changed, 122 insertions(+) (limited to 'drivers/gpu/drm/drm_mm.c') diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index 1f0d717dbad..a5c2773ccf2 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -226,6 +226,44 @@ struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, } EXPORT_SYMBOL(drm_mm_get_block_generic); +struct drm_mm_node *drm_mm_get_block_range_generic(struct drm_mm_node *node, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end, + int atomic) +{ + struct drm_mm_node *align_splitoff = NULL; + unsigned tmp = 0; + unsigned wasted = 0; + + if (node->start < start) + wasted += start - node->start; + if (alignment) + tmp = ((node->start + wasted) % alignment); + + if (tmp) + wasted += alignment - tmp; + if (wasted) { + align_splitoff = drm_mm_split_at_start(node, wasted, atomic); + if (unlikely(align_splitoff == NULL)) + return NULL; + } + + if (node->size == size) { + list_del_init(&node->fl_entry); + node->free = 0; + } else { + node = drm_mm_split_at_start(node, size, atomic); + } + + if (align_splitoff) + drm_mm_put_block(align_splitoff); + + return node; +} +EXPORT_SYMBOL(drm_mm_get_block_range_generic); + /* * Put a block. Merge with the previous and / or next block if they are free. * Otherwise add to the free stack. @@ -331,6 +369,56 @@ struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, } EXPORT_SYMBOL(drm_mm_search_free); +struct drm_mm_node *drm_mm_search_free_in_range(const struct drm_mm *mm, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end, + int best_match) +{ + struct list_head *list; + const struct list_head *free_stack = &mm->fl_entry; + struct drm_mm_node *entry; + struct drm_mm_node *best; + unsigned long best_size; + unsigned wasted; + + best = NULL; + best_size = ~0UL; + + list_for_each(list, free_stack) { + entry = list_entry(list, struct drm_mm_node, fl_entry); + wasted = 0; + + if (entry->size < size) + continue; + + if (entry->start > end || (entry->start+entry->size) < start) + continue; + + if (entry->start < start) + wasted += start - entry->start; + + if (alignment) { + register unsigned tmp = (entry->start + wasted) % alignment; + if (tmp) + wasted += alignment - tmp; + } + + if (entry->size >= size + wasted) { + if (!best_match) + return entry; + if (size < best_size) { + best = entry; + best_size = entry->size; + } + } + } + + return best; +} +EXPORT_SYMBOL(drm_mm_search_free_in_range); + int drm_mm_clean(struct drm_mm * mm) { struct list_head *head = &mm->ml_entry; diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index 62329f9a42c..b40b2f06203 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -66,6 +66,13 @@ extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, unsigned long size, unsigned alignment, int atomic); +extern struct drm_mm_node *drm_mm_get_block_range_generic( + struct drm_mm_node *node, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end, + int atomic); static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, unsigned long size, unsigned alignment) @@ -78,11 +85,38 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *pa { return drm_mm_get_block_generic(parent, size, alignment, 1); } +static inline struct drm_mm_node *drm_mm_get_block_range( + struct drm_mm_node *parent, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end) +{ + return drm_mm_get_block_range_generic(parent, size, alignment, + start, end, 0); +} +static inline struct drm_mm_node *drm_mm_get_block_atomic_range( + struct drm_mm_node *parent, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end) +{ + return drm_mm_get_block_range_generic(parent, size, alignment, + start, end, 1); +} extern void drm_mm_put_block(struct drm_mm_node *cur); extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size, unsigned alignment, int best_match); +extern struct drm_mm_node *drm_mm_search_free_in_range( + const struct drm_mm *mm, + unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end, + int best_match); extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size); extern void drm_mm_takedown(struct drm_mm *mm); -- cgit v1.2.3-70-g09d2 From 99d7e48e8cb867f303439ad40e995e203841bd94 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Wed, 9 Dec 2009 21:55:09 +0100 Subject: drm: Add memory manager debug function drm_mm_debug_table will print the memory manager state in table allowing to give a snapshot of the manager at given point in time. Usefull for debugging. Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_mm.c | 20 ++++++++++++++++++++ include/drm/drm_mm.h | 1 + 2 files changed, 21 insertions(+) (limited to 'drivers/gpu/drm/drm_mm.c') diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c index a5c2773ccf2..d7d7eac3ddd 100644 --- a/drivers/gpu/drm/drm_mm.c +++ b/drivers/gpu/drm/drm_mm.c @@ -469,6 +469,26 @@ void drm_mm_takedown(struct drm_mm * mm) } EXPORT_SYMBOL(drm_mm_takedown); +void drm_mm_debug_table(struct drm_mm *mm, const char *prefix) +{ + struct drm_mm_node *entry; + int total_used = 0, total_free = 0, total = 0; + + list_for_each_entry(entry, &mm->ml_entry, ml_entry) { + printk(KERN_DEBUG "%s 0x%08lx-0x%08lx: %8ld: %s\n", + prefix, entry->start, entry->start + entry->size, + entry->size, entry->free ? "free" : "used"); + total += entry->size; + if (entry->free) + total_free += entry->size; + else + total_used += entry->size; + } + printk(KERN_DEBUG "%s total: %d, used %d free %d\n", prefix, total, + total_used, total_free); +} +EXPORT_SYMBOL(drm_mm_debug_table); + #if defined(CONFIG_DEBUG_FS) int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm) { diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index b40b2f06203..4c10be39a43 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -133,6 +133,7 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) return block->mm; } +extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix); #ifdef CONFIG_DEBUG_FS int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm); #endif -- cgit v1.2.3-70-g09d2