From fce21ae4ccfcee0c28fb18f5507e145fb0b02dec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 22 Mar 2017 21:09:00 +0100 Subject: brcm2708: rename all patches from raspberrypi git tree to use 950 prefix MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Right now all brcm2708 patches are extracted from the non-mainline raspberrypi/linux git tree. Many of them are hacks and/or are unneeded in LEDE. Raspberry Pi is getting better and better mainline support so it would be nice to finally start maintaining patches in a cleaner way: 1) Backport patches accepted in upstream tree 2) Start using upstream drivers 3) Pick only these patches that are needed for more complete support Handling above tasks requires grouping patches - ideally using the same prefixes as generic ones. It means we should rename existing patches to use some high prefix. This will allow e.g. use 0xx for backported code. Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Acked-by: Stijn Tintel --- ...fill-user-BO-creation-requests-from-the-k.patch | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.9/950-0180-drm-vc4-Fulfill-user-BO-creation-requests-from-the-k.patch (limited to 'target/linux/brcm2708/patches-4.9/950-0180-drm-vc4-Fulfill-user-BO-creation-requests-from-the-k.patch') diff --git a/target/linux/brcm2708/patches-4.9/950-0180-drm-vc4-Fulfill-user-BO-creation-requests-from-the-k.patch b/target/linux/brcm2708/patches-4.9/950-0180-drm-vc4-Fulfill-user-BO-creation-requests-from-the-k.patch new file mode 100644 index 0000000000..c0967b4639 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0180-drm-vc4-Fulfill-user-BO-creation-requests-from-the-k.patch @@ -0,0 +1,53 @@ +From cb8a5a1cf8cfd5b88fe641ada9a2dfb318d43c3f Mon Sep 17 00:00:00 2001 +From: Eric Anholt +Date: Wed, 8 Feb 2017 15:00:54 -0800 +Subject: [PATCH] drm/vc4: Fulfill user BO creation requests from the kernel BO + cache. + +The from_cache flag was actually "the BO is invisible to userspace", +so we can repurpose to just zero out a cached BO and return it to +userspace. + +Improves wall time for a loop of 5 glsl-algebraic-add-add-1 by +-1.44989% +/- 0.862891% (n=28, 1 outlier removed from each that +appeared to be other system noise) + +Note that there's an intel-gpu-tools test to check for the proper +zeroing behavior here, which we continue to pass. + +Signed-off-by: Eric Anholt +--- + drivers/gpu/drm/vc4/vc4_bo.c | 13 +++++++------ + 1 file changed, 7 insertions(+), 6 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_bo.c ++++ b/drivers/gpu/drm/vc4/vc4_bo.c +@@ -208,21 +208,22 @@ struct drm_gem_object *vc4_create_object + } + + struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t unaligned_size, +- bool from_cache) ++ bool allow_unzeroed) + { + size_t size = roundup(unaligned_size, PAGE_SIZE); + struct vc4_dev *vc4 = to_vc4_dev(dev); + struct drm_gem_cma_object *cma_obj; ++ struct vc4_bo *bo; + + if (size == 0) + return ERR_PTR(-EINVAL); + + /* First, try to get a vc4_bo from the kernel BO cache. */ +- if (from_cache) { +- struct vc4_bo *bo = vc4_bo_get_from_cache(dev, size); +- +- if (bo) +- return bo; ++ bo = vc4_bo_get_from_cache(dev, size); ++ if (bo) { ++ if (!allow_unzeroed) ++ memset(bo->base.vaddr, 0, bo->base.base.size); ++ return bo; + } + + cma_obj = drm_gem_cma_create(dev, size); -- cgit v1.2.3