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  1. 11 12月, 2018 1 次提交
  3. 18 5月, 2018 1 次提交
  5. 02 2月, 2018 1 次提交
  7. 02 11月, 2017 10 次提交
    • G
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      由 Greg Kroah-Hartman 提交于 
      Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: NKate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
    • B
      drm/nouveau/mmu: remove old vmm frontend · 632b740c
      由 Ben Skeggs 提交于 
      Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      632b740c
    • B
      drm/nouveau/mmu: implement new vmm frontend · f9463a4b
      由 Ben Skeggs 提交于 
      These are the new priviledged interfaces to the VMM backends, and expose
some functionality that wasn't previously available.

It's now possible to allocate a chunk of address-space (even all of it),
without causing page tables to be allocated up-front, and then map into
it at arbitrary locations.  This is the basic primitive used to support
features such as sparse mapping, or to allow userspace control over its
own address-space, or HMM (where the GPU driver isn't in control of the
address-space layout).

Rather than being tied to a subtle combination of memory object and VMA
properties, arguments that control map flags (ro, kind, etc) are passed
explicitly at map time.

The compatibility hacks to implement the old frontend on top of the new
driver backends have been replaced with something similar to implement
the old frontend's interfaces on top of the new frontend.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      f9463a4b
    • B
      drm/nouveau/mmu: remove support for old backends · 26880e76
      由 Ben Skeggs 提交于 
      Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      26880e76
    • B
      drm/nouveau/fb/ram: remove old allocators · b4e114f1
      由 Ben Skeggs 提交于 
      Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      b4e114f1
    • B
      drm/nouveau: wrap nvkm_mem objects in nvkm_memory interfaces · bd275f1d
      由 Ben Skeggs 提交于 
      This is a transition step, to enable finer-grained commits while
transitioning to new MMU interfaces.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      bd275f1d
    • B
      drm/nouveau/fb/ram: add interface to allocate vram as an nvkm_memory object · e9a8b218
      由 Ben Skeggs 提交于 
      Upcoming MMU changes use nvkm_memory as its basic representation of memory,
so we need to be able to allocate VRAM like this.

The code is basically identical to the current chipset-specific allocators,
minus support for compression tags (which will be handled elsewhere anyway).
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      e9a8b218
    • B
      drm/nouveau/fb: move comptags mm into nvkm_fb · 7ef44bee
      由 Ben Skeggs 提交于 
      We're moving towards having a central place to handle comptag allocation,
and as some GPUs don't have a ram submodule (ie. Tegra), we need to move
the mm somewhere else.

It probably never belonged in ram anyways.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      7ef44bee
    • B
      drm/nouveau/core/mm: have users explicitly define heap identifiers · 4d058fab
      由 Ben Skeggs 提交于 
      Different sections of VRAM may have different properties (ie. can't be used
for compression/display, can't be mapped, etc).

We currently already support this, but it's a bit magic.  This change makes
it more obvious where we're allocating from.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      4d058fab
    • B
      drm/nouveau: separate buffer object backing memory from nvkm structures · 9ce523cc
      由 Ben Skeggs 提交于 
      Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      9ce523cc
  9. 06 4月, 2017 1 次提交
  11. 07 3月, 2017 2 次提交
  13. 17 2月, 2017 1 次提交
  15. 17 11月, 2016 1 次提交
  17. 07 11月, 2016 2 次提交
  19. 14 7月, 2016 3 次提交
  21. 20 5月, 2016 2 次提交
  23. 28 8月, 2015 3 次提交
  25. 22 1月, 2015 5 次提交
    • B
      drm/nouveau/fb: namespace + nvidia gpu names (no binary change) · 639c308e
      由 Ben Skeggs 提交于 
      The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver.  This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

A comparison of objdump disassemblies proves no code changes.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      639c308e
    • B
      drm/nouveau/bios: namespace + nvidia gpu names (no binary change) · d390b480
      由 Ben Skeggs 提交于 
      The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver.  This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

A comparison of objdump disassemblies proves no code changes.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      d390b480
    • B
      drm/nouveau/mmu: rename from vmmgr (no binary change) · 5ce3bf3c
      由 Ben Skeggs 提交于 
      Switch to NVIDIA's name for the device.

The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver.  This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

A comparison of objdump disassemblies proves no code changes.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      5ce3bf3c
    • B
      drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes) · c39f472e
      由 Ben Skeggs 提交于 
      The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      c39f472e
    • B
      drm/nouveau/subdev: always upcast through nouveau_subdev()/nouveau_engine() · 2f4a58e8
      由 Ben Skeggs 提交于 
      Has additional safeties for one.  For two, needed for an upcoming
commit that removes abuse of nouveau_object.engine.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
      2f4a58e8
  27. 15 9月, 2014 3 次提交
  29. 10 6月, 2014 1 次提交
  31. 26 3月, 2014 1 次提交
  33. 23 1月, 2014 2 次提交