linux-toradex.git/drivers/gpu/drm/armada/armada_gem.c, branch v4.20

drm/armada: Adding new typedef vm_fault_t

2018-07-30T10:52:31+00:00

Use new return type vm_fault_t for fault handler in struct
vm_operations_struct. For now, this is just documenting that the
function returns a VM_FAULT value rather than an errno. Once all
instances are converted, vm_fault_t will become a distinct type.

commit 1c8f422059ae ("mm: change return type to vm_fault_t")

Previously vm_insert_pfn() returns err which driver mapped into
VM_FAULT_* type. The new function vmf_insert_pfn() will replace this
inefficiency by returning VM_FAULT_* type.

Signed-off-by: Souptick Joarder 
Reviewed-by: Matthew Wilcox 
Signed-off-by: Russell King

dma-buf: remove kmap_atomic interface

2018-06-20T13:59:34+00:00

Neither used nor correctly implemented anywhere. Just completely remove
the interface.

Signed-off-by: Christian König 
Reviewed-by: Daniel Vetter 
Acked-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/226645/

drm/armada: Replace drm_gem_object_reference/unreference() with _get/put()

2017-10-16T19:01:51+00:00

This patch replace instances of drm_gem_object_reference/unreference with
*_get/put() suffixes, because get/put is shorter and consistent with the
kernel use of *_get/put() suffixes.
This was done with the following Coccinelle script:

@r1@
expression e;
@@

(
-drm_gem_object_reference(e);
+drm_gem_object_get(e);
|
-drm_gem_object_unreference(e);
+drm_gem_object_put(e);
|
-drm_gem_object_unreference_unlocked(e);
+drm_gem_object_put_unlocked(e);
)

Signed-off-by: Haneen Mohammed 
[resolved small conflict with removed armada_gem_dumb_map_offset]
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/a59ef1ed109ade897bcffcb01b33214262db8942.1505932812.git.hamohammed.sa@gmail.com

drm/armada: Remove unused #include

2017-09-29T07:35:36+00:00

Remove drmP.h as it is not needed anymore since nothing it
defines is used in these files.

Signed-off-by: Haneen Mohammed 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20170927073846.GA14352@Haneen

drm/armada: Use .dumb_map_offset and .dumb_destroy defaults

2017-09-02T12:22:20+00:00

This driver can use the drm_driver.dumb_destroy and
drm_driver.dumb_map_offset defaults, so no need to set them.

Cc: Russell King 
Signed-off-by: Noralf Trønnes 
Reviewed-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/1502986891-36764-3-git-send-email-noralf@tronnes.org

drm/armada: don't abuse DMA_ERROR_CODE

2017-06-20T09:12:58+00:00

dev_addr isn't even a dma_addr_t, and DMA_ERROR_CODE has never been
a valid driver API.  Add a bool mapped flag instead.

Signed-off-by: Christoph Hellwig

dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

2017-04-20T08:17:46+00:00

Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
in highmem.h, the former can be aliased if any dma-buf user includes
that header.

I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.

Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.

To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)

[1] https://www.spinics.net/lists/target-devel/msg15070.html

Signed-off-by: Logan Gunthorpe 
Reviewed-by: Sinclair Yeh 
Acked-by: Daniel Vetter 
Acked-by: Sumit Semwal 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/1492630570-879-1-git-send-email-logang@deltatee.com

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-25T01:46:54+00:00

->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.

Remove the vma parameter to simplify things.

[arnd@arndb.de: fix ARM build]
  Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang 
Signed-off-by: Arnd Bergmann 
Reviewed-by: Ross Zwisler 
Cc: Theodore Ts'o 
Cc: Darrick J. Wong 
Cc: Matthew Wilcox 
Cc: Dave Hansen 
Cc: Christoph Hellwig 
Cc: Jan Kara 
Cc: Dan Williams 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drm: Improve drm_mm search (and fix topdown allocation) with rbtrees

2017-02-03T10:10:32+00:00

The drm_mm range manager claimed to support top-down insertion, but it
was neither searching for the top-most hole that could fit the
allocation request nor fitting the request to the hole correctly.

In order to search the range efficiently, we create a secondary index
for the holes using either their size or their address. This index
allows us to find the smallest hole or the hole at the bottom or top of
the range efficiently, whilst keeping the hole stack to rapidly service
evictions.

v2: Search for holes both high and low. Rename flags to mode.
v3: Discover rb_entry_safe() and use it!
v4: Kerneldoc for enum drm_mm_insert_mode.

Signed-off-by: Chris Wilson 
Reviewed-by: Joonas Lahtinen 
Cc: Alex Deucher 
Cc: "Christian König" 
Cc: David Airlie 
Cc: Russell King 
Cc: Daniel Vetter 
Cc: Jani Nikula 
Cc: Sean Paul 
Cc: Lucas Stach 
Cc: Christian Gmeiner 
Cc: Rob Clark 
Cc: Thierry Reding 
Cc: Stephen Warren 
Cc: Alexandre Courbot 
Cc: Eric Anholt 
Cc: Sinclair Yeh 
Cc: Thomas Hellstrom 
Reviewed-by: Alex Deucher 
Reviewed-by: Sinclair Yeh  # vmwgfx
Reviewed-by: Lucas Stach  #etnaviv
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20170202210438.28702-1-chris@chris-wilson.co.uk

mm: use vmf->address instead of of vmf->virtual_address

2016-12-15T00:04:09+00:00

Every single user of vmf->virtual_address typed that entry to unsigned
long before doing anything with it so the type of virtual_address does
not really provide us any additional safety.  Just use masked
vmf->address which already has the appropriate type.

Link: http://lkml.kernel.org/r/1479460644-25076-3-git-send-email-jack@suse.cz
Signed-off-by: Jan Kara 
Acked-by: Kirill A. Shutemov 
Cc: Dan Williams 
Cc: Ross Zwisler 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds