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| author |   Eric Anholt <eric@anholt.net> | 2015-10-09 20:25:07 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2015-12-07 20:01:56 -0800 |
| commit | c826a6e1064419f78855463cf29ce9e8b9d25bf4 (patch) | |
| tree | 5e14c5eccefaaf37b87684737e852ba87a621d89 /drivers/gpu/drm/vc4/vc4_drv.c | |
| parent | drm: Create a driver hook for allocating GEM object structs. (diff) | |
| download | linux-dev-c826a6e1064419f78855463cf29ce9e8b9d25bf4.tar.xz linux-dev-c826a6e1064419f78855463cf29ce9e8b9d25bf4.zip | |
drm/vc4: Add a BO cache.
We need to allocate new BOs in the kernel as part of each frame, but
the CMA allocator is way too slow for that. As an optimization, keep
track of recently-freed BOs and reuse them, with a 1 second timeout to
fully free them back to the system.
This improves 3D performance by about 15%.
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_drv.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_drv.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 6e730605edcc..da041fac0731 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -92,7 +92,8 @@ static struct drm_driver vc4_drm_driver = { .debugfs_cleanup = vc4_debugfs_cleanup, #endif - .gem_free_object = drm_gem_cma_free_object, + .gem_create_object = vc4_create_object, + .gem_free_object = vc4_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, @@ -170,6 +171,8 @@ static int vc4_drm_bind(struct device *dev) drm_dev_set_unique(drm, dev_name(dev)); + vc4_bo_cache_init(drm); + drm_mode_config_init(drm); if (ret) goto unref; @@ -202,6 +205,7 @@ unbind_all: component_unbind_all(dev, drm); unref: drm_dev_unref(drm); + vc4_bo_cache_destroy(drm); return ret; } |