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drm/ttm: Don't count pages in SG BOs against pages_limit 

Pages in SG BOs were not allocated by TTM. So don't count them against
TTM's pages limit.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210414064804.29356-9-Felix.Kuehling@amd.com
This commit is contained in:
Felix Kuehling 2021-04-14 02:48:03 -04:00 committed by Christian König
parent 603dc7ed91
commit 2b173d7fc2
1 changed files with 18 additions and 9 deletions
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15
drivers/gpu/drm/ttm/ttm_tt.c
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@ -317,9 +317,12 @@ int ttm_tt_populate(struct ttm_device *bdev,
if (ttm_tt_is_populated(ttm))
return 0;
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_add(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_add(ttm->num_pages, &ttm_dma32_pages_allocated);
atomic_long_add(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
while (atomic_long_read(&ttm_pages_allocated) > ttm_pages_limit ||
atomic_long_read(&ttm_dma32_pages_allocated) >
@ -350,9 +353,12 @@ int ttm_tt_populate(struct ttm_device *bdev,
return 0;
error:
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated);
atomic_long_sub(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
return ret;
}
EXPORT_SYMBOL(ttm_tt_populate);
@ -382,9 +388,12 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm)
else
ttm_pool_free(&bdev->pool, ttm);
if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) {
atomic_long_sub(ttm->num_pages, &ttm_pages_allocated);
if (bdev->pool.use_dma32)
atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated);
atomic_long_sub(ttm->num_pages,
&ttm_dma32_pages_allocated);
}
ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
}