linux-kernel - [PATCH v13 0/2] staging/android: Sync ABI rework

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Message-Id: <1461684748-24106-1-git-send-email-gustavo@padovan.org>
Date:	Tue, 26 Apr 2016 12:32:26 -0300
From:	Gustavo Padovan <gustavo@...ovan.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	dri-devel@...ts.freedesktop.org,
	Daniel Stone <daniels@...labora.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	Greg Hackmann <ghackmann@...gle.com>,
	John Harrison <John.C.Harrison@...el.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: [PATCH v13 0/2] staging/android: Sync ABI rework

From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>

Hi Greg, 

This patchset clean up the Sync ABI and then improve in to a more optimized
version.  Also it is now less likely to need changes in the future. This is not
breaking any upstream user of the sync framework, as no driver wired support
for it, so far Android is the only user. A patch to AOSP will be provided to
fix it there.

We've made the changes in a way that userspace can figure out if the new
versions are present and if not fallback to the older ABI version. More
information on patch 2 description.

To accomplish that we had to create a u64_to_user_ptr() macro so
patch 1 adds that and also fixes some places in the kernel that
were using (void __user *)(uintptr_t) cast directly. It already has Acks
from maintainers of drm drivers it changes.

Patch 2 is the actual rework and has Ack from the people interested in it,
including Android folks.

Gustavo Padovan (2):
  kernel.h: add u64_to_user_ptr()
  staging/android: refactor SYNC IOCTLs

 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 11 ++--
 drivers/gpu/drm/i915/i915_drv.h              |  5 --
 drivers/gpu/drm/i915/i915_gem.c              | 14 ++---
 drivers/gpu/drm/i915/i915_gem_execbuffer.c   | 14 ++---
 drivers/gpu/drm/msm/msm_gem_submit.c         | 11 ++--
 drivers/staging/android/sync.c               | 76 +++++++++++++++-------------
 drivers/staging/android/uapi/sync.h          | 36 +++++++++----
 include/linux/kernel.h                       |  7 +++
 8 files changed, 94 insertions(+), 80 deletions(-)

-- 
2.5.5