[PATCH 0/3] Introduce DMA buffer sharing mechanism

2011-12-26 Thread Sumit Semwal
Hello Everyone, Post some discussion as an RFC, here is the patch for introducing DMA buffer sharing mechanism - change history is in the changelog below. Various subsystems - V4L2, GPU-accessors, DRI to name a few - have felt the need to have a common mechanism to share memory buffers across d

[PATCH 1/3] dma-buf: Introduce dma buffer sharing mechanism

2011-12-26 Thread Sumit Semwal
This is the first step in defining a dma buffer sharing mechanism. A new buffer object dma_buf is added, with operations and API to allow easy sharing of this buffer object across devices. The framework allows: - creation of a buffer object, its association with a file pointer, and associated

[PATCH 2/3] dma-buf: Documentation for buffer sharing framework

2011-12-26 Thread Sumit Semwal
Add documentation for dma buffer sharing framework, explaining the various operations, members and API of the dma buffer sharing framework. Signed-off-by: Sumit Semwal Signed-off-by: Sumit Semwal Reviewed-by: Daniel Vetter --- Documentation/dma-buf-sharing.txt | 224 ++

[PATCH 3/3] dma-buf: mark EXPERIMENTAL for 1st release.

2011-12-26 Thread Sumit Semwal
Mark dma-buf buffer sharing API as EXPERIMENTAL for first release. We will remove this in later versions, once it gets smoothed out and has more users. Signed-off-by: Sumit Semwal Signed-off-by: Sumit Semwal --- drivers/base/Kconfig |1 + 1 files changed, 1 insertions(+), 0 deletions(-) di

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-daemon
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #2 from Pasi Kärkkäinen 2011-12-26 13:14:15 UTC --- Created attachment 54834 --> https://bugs.freedesktop.org/attachment.cgi?id=54834 dmesg from F16 livecd, Linux kernel 3.1.0 -- Configure bugmail: https://bugs.freedesktop.org/use

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-daemon
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #3 from Pasi Kärkkäinen 2011-12-26 13:14:50 UTC --- Created attachment 54835 --> https://bugs.freedesktop.org/attachment.cgi?id=54835 dmesg from F16 livecd, Linux kernel 3.1.0, with drm.debug=0x2 -- Configure bugmail: https://bugs

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-daemon
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #4 from Pasi Kärkkäinen 2011-12-26 13:18:18 PST --- I verified the bug is still in Fedora 16 final, which uses Linux kernel 3.1.0-7.fc16.x86_64 . Here's some output about radeon power states with "drm.debug=0x2" boot cmdline paramet

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-daemon
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #5 from Pasi Kärkkäinen 2011-12-26 13:24:05 PST --- Sorry, the paste is badly line wrapped, but the dmesg attachment has the whole proper kernel log with drm.debug=0x2 -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cg

[PATCH 0/2]: drm/i915: Disable RC6 and semaphores on SNB *again*

2011-12-26 Thread Keith Packard
This leaves them enabled on IVB, but disables them on SNB as we've discovered (yet again) that there are hardware combinations that simply cannot run with them. [PATCH 1/2] drm/i915: Disable semaphores by default on SNB [PATCH 2/2] drm/i915: Disable RC6 on Sandybridge by default -- keith.pack..

[PATCH 1/2] drm/i915: Disable semaphores by default on SNB

2011-12-26 Thread Keith Packard
Semaphores still cause problems on some machines: > From Udo Steinberg: > > With Linux-3.2-rc6 I'm frequently seeing GPU hangs when large amounts of > text scroll in an xterm, such as when extracting a tar archive. Such as this > one (note the timestamps): > > I can reproduce it fairly easily wit

[PATCH 2/2] drm/i915: Disable RC6 on Sandybridge by default

2011-12-26 Thread Keith Packard
RC6 fails again. > I found my system freeze mostly during starting up X and KDE. Sometimes it > works for some minutes, sometimes it freezes immediatly. When the freeze > happens, everything is dead (even the reset button does not work, I need to > power cycle). > I disabled RC6, and my system ru

Re: [PATCH 0/2]: drm/i915: Disable RC6 and semaphores on SNB *again*

2011-12-26 Thread Linus Torvalds
On Mon, Dec 26, 2011 at 5:02 PM, Keith Packard wrote: > This leaves them enabled on IVB, but disables them on SNB as we've > discovered (yet again) that there are hardware combinations that > simply cannot run with them. Oh well. Applied, Linus ___

[Linaro-mm-sig] [RFC v3 0/2] Introduce DMA buffer sharing mechanism

2011-12-26 Thread Semwal, Sumit
On Fri, Dec 23, 2011 at 10:50 PM, Rob Clark wrote: > On Fri, Dec 23, 2011 at 4:08 AM, Semwal, Sumit wrote: >> On Wed, Dec 21, 2011 at 1:50 AM, Dave Airlie wrote: >> Hence for both patches: Reviewed-by: Daniel Vetter >>> >>> Yeah I'm with Daniel, I like this one, I can definitely

[PATCH 0/3] Introduce DMA buffer sharing mechanism

2011-12-26 Thread Sumit Semwal
Hello Everyone, Post some discussion as an RFC, here is the patch for introducing DMA buffer sharing mechanism - change history is in the changelog below. Various subsystems - V4L2, GPU-accessors, DRI to name a few - have felt the need to have a common mechanism to share memory buffers across d

[PATCH 1/3] dma-buf: Introduce dma buffer sharing mechanism

2011-12-26 Thread Sumit Semwal
This is the first step in defining a dma buffer sharing mechanism. A new buffer object dma_buf is added, with operations and API to allow easy sharing of this buffer object across devices. The framework allows: - creation of a buffer object, its association with a file pointer, and associated

[PATCH 2/3] dma-buf: Documentation for buffer sharing framework

2011-12-26 Thread Sumit Semwal
Add documentation for dma buffer sharing framework, explaining the various operations, members and API of the dma buffer sharing framework. Signed-off-by: Sumit Semwal Signed-off-by: Sumit Semwal Reviewed-by: Daniel Vetter --- Documentation/dma-buf-sharing.txt | 224 ++

[PATCH 3/3] dma-buf: mark EXPERIMENTAL for 1st release.

2011-12-26 Thread Sumit Semwal
Mark dma-buf buffer sharing API as EXPERIMENTAL for first release. We will remove this in later versions, once it gets smoothed out and has more users. Signed-off-by: Sumit Semwal Signed-off-by: Sumit Semwal --- drivers/base/Kconfig |1 + 1 files changed, 1 insertions(+), 0 deletions(-) di

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-dae...@freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #2 from Pasi K?rkk?inen 2011-12-26 13:14:15 UTC --- Created attachment 54834 --> https://bugs.freedesktop.org/attachment.cgi?id=54834 dmesg from F16 livecd, Linux kernel 3.1.0 -- Configure bugmail: https://bugs.freedesktop.org/us

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-dae...@freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #3 from Pasi K?rkk?inen 2011-12-26 13:14:50 UTC --- Created attachment 54835 --> https://bugs.freedesktop.org/attachment.cgi?id=54835 dmesg from F16 livecd, Linux kernel 3.1.0, with drm.debug=0x2 -- Configure bugmail: https://bug

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-dae...@freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #4 from Pasi K?rkk?inen 2011-12-26 13:18:18 PST --- I verified the bug is still in Fedora 16 final, which uses Linux kernel 3.1.0-7.fc16.x86_64 . Here's some output about radeon power states with "drm.debug=0x2" boot cmdline parame

[Bug 41762] radeon default power_profile "default" makes laptop overheat (Mobility Radeon HD 3650)

2011-12-26 Thread bugzilla-dae...@freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=41762 --- Comment #5 from Pasi K?rkk?inen 2011-12-26 13:24:05 PST --- Sorry, the paste is badly line wrapped, but the dmesg attachment has the whole proper kernel log with drm.debug=0x2 -- Configure bugmail: https://bugs.freedesktop.org/userprefs.c

[PATCH 0/2]: drm/i915: Disable RC6 and semaphores on SNB *again*

2011-12-26 Thread Keith Packard
This leaves them enabled on IVB, but disables them on SNB as we've discovered (yet again) that there are hardware combinations that simply cannot run with them. [PATCH 1/2] drm/i915: Disable semaphores by default on SNB [PATCH 2/2] drm/i915: Disable RC6 on Sandybridge by default -- keith.packar

[PATCH 1/2] drm/i915: Disable semaphores by default on SNB

2011-12-26 Thread Keith Packard
Semaphores still cause problems on some machines: > From Udo Steinberg: > > With Linux-3.2-rc6 I'm frequently seeing GPU hangs when large amounts of > text scroll in an xterm, such as when extracting a tar archive. Such as this > one (note the timestamps): > > I can reproduce it fairly easily wit

[PATCH 2/2] drm/i915: Disable RC6 on Sandybridge by default

2011-12-26 Thread Keith Packard
RC6 fails again. > I found my system freeze mostly during starting up X and KDE. Sometimes it > works for some minutes, sometimes it freezes immediatly. When the freeze > happens, everything is dead (even the reset button does not work, I need to > power cycle). > I disabled RC6, and my system ru

[PATCH 0/2]: drm/i915: Disable RC6 and semaphores on SNB *again*

2011-12-26 Thread Linus Torvalds
On Mon, Dec 26, 2011 at 5:02 PM, Keith Packard wrote: > This leaves them enabled on IVB, but disables them on SNB as we've > discovered (yet again) that there are hardware combinations that > simply cannot run with them. Oh well. Applied, Linus