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drm/ttm: add common accounting to the resource mgr v3

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It makes sense to have this in the common manager for debugging and
accounting of how much resources are used.

v2: cleanup kerneldoc a bit
v3: drop the atomic, update counter under lock instead

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com> (v1)
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Tested-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Link: https://patchwork.freedesktop.org/patch/msgid/20220214093439.2989-2-christian.koenig@amd.com
This commit is contained in:
Christian König
2021-07-12 14:05:01 +02:00
parent 90d4aa20c8
commit 0e05fc49c3
2 changed files with 39 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/drm/ttm/ttm_resource.h
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@@ -27,6 +27,7 @@
#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/atomic.h>
#include <linux/dma-buf-map.h>
#include <linux/dma-fence.h>
#include <drm/drm_print.h>
@@ -130,10 +131,15 @@ struct ttm_resource_manager {
struct dma_fence *move;
/*
* Protected by the global->lru_lock.
* Protected by the bdev->lru_lock.
*/
struct list_head lru[TTM_MAX_BO_PRIORITY];
/**
* @usage: How much of the resources are used, protected by the
* bdev->lru_lock.
*/
uint64_t usage;
};
/**
@@ -283,6 +289,7 @@ void ttm_resource_manager_init(struct ttm_resource_manager *man,
int ttm_resource_manager_evict_all(struct ttm_device *bdev,
struct ttm_resource_manager *man);
uint64_t ttm_resource_manager_usage(struct ttm_resource_manager *man);
void ttm_resource_manager_debug(struct ttm_resource_manager *man,
struct drm_printer *p);