kernel/linux.git/drivers/gpu/drm/vgem, branch linux-4.13.y

drm/vgem: Pin our pages for dmabuf exports

2017-09-09T15:39:23+00:00

commit 71bb23c707c141b176bc084179ca5ee58d5fd26a upstream. When the caller maps their dmabuf and we return an sg_table, the caller doesn't expect the pages beneath that sg_table to vanish on a whim (i.e. under mempressure). The contract is that the pages are pinned for the duration of the mapping (from dma_buf_map_attachment() to dma_buf_unmap_attachment). To comply, we need to introduce our own vgem_object.pages_pin_count and elevate it across the mapping. However, the drm_prime interface we use calls drv->prime_pin on dma_buf_attach and drv->prime_unpin on dma_buf_detach, which while that does cover the mapping is much broader than is desired -- but it will do for now. v2: also hold the pin across prime_vmap/vunmap Reported-by: Tomi Sarvela Testcase: igt/gem_concurrent_blit/*swap*vgem* Fixes: 5ba6c9ff961a ("drm/vgem: Fix mmaping") Signed-off-by: Chris Wilson Cc: Tomi Sarvela Cc: Laura Abbott Cc: Sean Paul Cc: Matthew Auld Cc: Daniel Vetter Cc: # needs a backport Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170622134617.17912-1-chris@chris-wilson.co.uk Signed-off-by: Greg Kroah-Hartman

drm/vgem: Fix return value check in vgem_init()

2017-05-22T07:47:34+00:00

In case of error, the function platform_device_register_simple() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: af33a9190d02 ("drm/vgem: Enable dmabuf import interfaces") Signed-off-by: Wei Yongjun Reviewed-by: Chris Wilson [danvet: Fix fixes: tag per Chris' review.] Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170521011939.8111-1-weiyj.lk@gmail.com

drm: drop drm_[cm]alloc* helpers

2017-05-18T15:22:39+00:00

Now that drm_[cm]alloc* helpers are simple one line wrappers around kvmalloc_array and drm_free_large is just kvfree alias we can drop them and replace by their native forms. This shouldn't introduce any functional change. Changes since v1 - fix typo in drivers/gpu//drm/etnaviv/etnaviv_gem.c - noticed by 0day build robot Suggested-by: Daniel Vetter Signed-off-by: Michal Hocko drm: drop drm_[cm]alloc* helpers [danvet: Fixup vgem which grew another user very recently.] Signed-off-by: Daniel Vetter Acked-by: Christian König Link: http://patchwork.freedesktop.org/patch/msgid/20170517122312.GK18247@dhcp22.suse.cz

drm/vgem: remove unneeded -Iinclude/drm compiler flag

2017-05-18T05:13:59+00:00

With the include directives under include/drm/ fixed, this flag is no longer needed. Signed-off-by: Masahiro Yamada Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1493009447-31524-29-git-send-email-yamada.masahiro@socionext.com

drm/vgem: Convert to a struct drm_device subclass

2017-05-10T08:14:06+00:00

With Laura's introduction of the fake platform device for importing dmabuf, we add a second static that is logically tied to the vgem_device. Convert vgem over to using the struct drm_device subclassing, so that the platform device is stored inside its owner. Signed-off-by: Chris Wilson Cc: Laura Abbott Cc: Daniel Vetter Reviewed-by: Laura Abbott Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170508132228.9509-1-chris@chris-wilson.co.uk

drm/vgem: Enable dmabuf import interfaces

2017-05-08T07:39:13+00:00

Enable the GEM dma-buf import interfaces in addition to the export interfaces. This lets vgem be used as a test source for other allocators (e.g. Ion). Reviewed-by: Chris Wilson Signed-off-by: Laura Abbott Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-4-git-send-email-labbott@redhat.com

drm/vgem: Add a dummy platform device

2017-05-08T07:39:13+00:00

The vgem driver is currently registered independent of any actual device. Some usage of the dmabuf APIs require an actual device structure to do anything. Register a dummy platform device for use with dmabuf. Reviewed-by: Chris Wilson Signed-off-by: Laura Abbott Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-2-git-send-email-labbott@redhat.com

Merge tag 'doc-4.11-images' of git://git.lwn.net/linux into drm-misc-next

2017-03-14T14:07:33+00:00

Pointer for Markus's image conversion work. We need this so we can merge all the pretty drm graphs for 4.12. Signed-off-by: Daniel Vetter

drm/vgem: switch to postclose

2017-03-14T13:38:33+00:00

I didn't spot anything that would require ordering here (well not anywhere else either), and I'm trying to unify at least modern drivers on one close hook. Cc: Chris Wilson Reviewed-by: Sean Paul Reviewed-by: Liviu Dudau Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170308141257.12119-18-daniel.vetter@ffwll.ch

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-03-02T23:20:00+00:00

Pull vfs pile two from Al Viro: - orangefs fix - series of fs/namei.c cleanups from me - VFS stuff coming from overlayfs tree * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: orangefs: Use RCU for destroy_inode vfs: use helper for calling f_op->fsync() mm: use helper for calling f_op->mmap() vfs: use helpers for calling f_op->{read,write}_iter() vfs: pass type instead of fn to do_{loop,iter}_readv_writev() vfs: extract common parts of {compat_,}do_readv_writev() vfs: wrap write f_ops with file_{start,end}_write() vfs: deny copy_file_range() for non regular files vfs: deny fallocate() on directory vfs: create vfs helper vfs_tmpfile() namei.c: split unlazy_walk() namei.c: fold the check for DCACHE_OP_REVALIDATE into d_revalidate() lookup_fast(): clean up the logics around the fallback to non-rcu mode namei: fold unlazy_link() into its sole caller