diff options
| author | Keith Packard <keithp@keithp.com> | 2007-12-16 01:47:51 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2007-12-21 12:16:29 -0800 |
| commit | 37fb2ac4071f62bad2c36cc9ca84f9c8feee6bf5 (patch) | |
| tree | 75b313d56bd7df93dbc0191492b28995a4dd4b99 /linux-core/drm_objects.h | |
| parent | 881ee70ab7bab5d6f6140dc9bf1e19c7b5844084 (diff) | |
Use dummy_read_page for unpopulated kernel-allocated ttm pages.
Previously, dummy_read_page was used only for read-only user allocations; it
filled in pages that were not present in the user address map (presumably,
these were allocated but never written to pages).
This patch allows them to be used for read-only ttms allocated from the
kernel, so that applications can over-allocate buffers without forcing every
page to be allocated.
Diffstat (limited to 'linux-core/drm_objects.h')
| -rw-r--r-- | linux-core/drm_objects.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/linux-core/drm_objects.h b/linux-core/drm_objects.h index 375420dc..47b6b018 100644 --- a/linux-core/drm_objects.h +++ b/linux-core/drm_objects.h @@ -263,7 +263,8 @@ struct drm_ttm_backend; struct drm_ttm_backend_func { int (*needs_ub_cache_adjust) (struct drm_ttm_backend *backend); int (*populate) (struct drm_ttm_backend *backend, - unsigned long num_pages, struct page **pages); + unsigned long num_pages, struct page **pages, + struct page *dummy_read_page); void (*clear) (struct drm_ttm_backend *backend); int (*bind) (struct drm_ttm_backend *backend, struct drm_bo_mem_reg *bo_mem); |