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| author | Christian König <christian.koenig@amd.com> | 2017-09-19 15:20:42 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-10-09 22:30:17 +0200 |
| commit | c6e839a3e299bbff991a3b4136f96ccaca4b276f (patch) | |
| tree | ffecfd346a28188d45af833594afeba57c0edd97 /drivers/gpu/drm/ttm/ttm_page_alloc.c | |
| parent | drm/amdgpu: Reserve shared memory on VRAM for SR-IOV (diff) | |
| download | linux-c6e839a3e299bbff991a3b4136f96ccaca4b276f.tar.xz linux-c6e839a3e299bbff991a3b4136f96ccaca4b276f.zip | |
drm/ttm: allocate/free multiple pages in a single call
Totally surprisingly this is more efficient than doing it page by page.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_page_alloc.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_page_alloc.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index e11fd76e06f4..482dd9aa2c84 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -873,15 +873,14 @@ int ttm_pool_populate(struct ttm_tt *ttm) if (ttm->state != tt_unpopulated) return 0; - for (i = 0; i < ttm->num_pages; ++i) { - ret = ttm_get_pages(&ttm->pages[i], 1, - ttm->page_flags, - ttm->caching_state); - if (ret != 0) { - ttm_pool_unpopulate(ttm); - return -ENOMEM; - } + ret = ttm_get_pages(ttm->pages, ttm->num_pages, ttm->page_flags, + ttm->caching_state); + if (unlikely(ret != 0)) { + ttm_pool_unpopulate(ttm); + return ret; + } + for (i = 0; i < ttm->num_pages; ++i) { ret = ttm_mem_global_alloc_page(mem_glob, ttm->pages[i], PAGE_SIZE); if (unlikely(ret != 0)) { @@ -908,14 +907,14 @@ void ttm_pool_unpopulate(struct ttm_tt *ttm) unsigned i; for (i = 0; i < ttm->num_pages; ++i) { - if (ttm->pages[i]) { - ttm_mem_global_free_page(ttm->glob->mem_glob, - ttm->pages[i], PAGE_SIZE); - ttm_put_pages(&ttm->pages[i], 1, - ttm->page_flags, - ttm->caching_state); - } + if (!ttm->pages[i]) + continue; + + ttm_mem_global_free_page(ttm->glob->mem_glob, ttm->pages[i], + PAGE_SIZE); } + ttm_put_pages(ttm->pages, ttm->num_pages, ttm->page_flags, + ttm->caching_state); ttm->state = tt_unpopulated; } EXPORT_SYMBOL(ttm_pool_unpopulate); |