From c9220b0f7cbd1d2272426aa81a72ae2f6582bb71 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 8 Oct 2010 08:57:10 +1000 Subject: [PATCH] drm/ttm: add unlocked variant of new manager put node. We need the unlocked variant for the new codepath introduced to fix the race condition in master recently. Signed-off-by: Dave Airlie --- drivers/gpu/drm/ttm/ttm_bo.c | 13 ++++++++++--- drivers/gpu/drm/ttm/ttm_bo_manager.c | 10 ++++++++++ include/drm/ttm/ttm_bo_driver.h | 4 ++++ 3 files changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 1e9bb2156dcf..5ef0103bd0b6 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -464,9 +464,7 @@ static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) spin_lock(&glob->lru_lock); } - if (bo->mem.mm_node) { - ttm_bo_mem_put(bo, &bo->mem); - } + ttm_bo_mem_put_locked(bo, &bo->mem); atomic_set(&bo->reserved, 0); wake_up_all(&bo->event_queue); @@ -791,6 +789,15 @@ void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) } EXPORT_SYMBOL(ttm_bo_mem_put); +void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem) +{ + struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type]; + + if (mem->mm_node) + (*man->func->put_node_locked)(man, mem); +} +EXPORT_SYMBOL(ttm_bo_mem_put_locked); + /** * Repeatedly evict memory from the LRU for @mem_type until we create enough * space, or we've evicted everything and there isn't enough space. diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c index 7410c190c891..35c97b20bdae 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_manager.c +++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c @@ -90,6 +90,15 @@ static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man, } } +static void ttm_bo_man_put_node_locked(struct ttm_mem_type_manager *man, + struct ttm_mem_reg *mem) +{ + if (mem->mm_node) { + drm_mm_put_block(mem->mm_node); + mem->mm_node = NULL; + } +} + static int ttm_bo_man_init(struct ttm_mem_type_manager *man, unsigned long p_size) { @@ -143,6 +152,7 @@ const struct ttm_mem_type_manager_func ttm_bo_manager_func = { ttm_bo_man_takedown, ttm_bo_man_get_node, ttm_bo_man_put_node, + ttm_bo_man_put_node_locked, ttm_bo_man_debug }; EXPORT_SYMBOL(ttm_bo_manager_func); diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index e3371dbe6a10..d0ff529fedde 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -214,6 +214,8 @@ struct ttm_mem_type_manager_func { struct ttm_mem_reg *mem); void (*put_node)(struct ttm_mem_type_manager *man, struct ttm_mem_reg *mem); + void (*put_node_locked)(struct ttm_mem_type_manager *man, + struct ttm_mem_reg *mem); void (*debug)(struct ttm_mem_type_manager *man, const char *prefix); }; @@ -667,6 +669,8 @@ extern int ttm_bo_mem_space(struct ttm_buffer_object *bo, extern void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem); +extern void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo, + struct ttm_mem_reg *mem); /** * ttm_bo_wait_for_cpu -- 2.39.5