linux/drivers/gpu/drm
Daniel Vetter be2cde9a6d drm/i915: add a tracepoint for gpu frequency changes
We've had and still have too many issues where the gpu turbo doesn't
quite to what it's supposed to do (or what we want it to do).

Adding a tracepoint to track when the desired gpu frequency changes
should help a lot in characterizing and understanding problematic
workloads.

Also, this should be fairly interesting for power tuning (and
especially noticing when the gpu is stuck in high frequencies, as has
happened in the past) and hence for integration into powertop and
similar tools.

Cc: Arjan van de Ven <arjan@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-09-03 10:09:27 +02:00
..
ast drm/ast: fix EDID memory leak 2012-08-24 09:37:09 +10:00
cirrus drm/cirrus: Remove unused validate_sequence 2012-08-24 09:34:46 +10:00
exynos drm: remove the raw_edid field from struct drm_display_info 2012-08-24 09:37:36 +10:00
gma500 gma500: Fix frequency detection 2012-08-24 17:02:42 +10:00
i2c drm/i2c/ch7006: Convert to dev_pm_ops 2012-08-24 09:56:08 +10:00
i810 drm: kill dma queue support 2012-07-19 22:50:55 -04:00
i915 drm/i915: add a tracepoint for gpu frequency changes 2012-09-03 10:09:27 +02:00
mga drm: kill reclaim_buffers callback 2012-07-19 22:50:28 -04:00
mgag200 drm: remove the raw_edid field from struct drm_display_info 2012-08-24 09:37:36 +10:00
nouveau vga_switcheroo: Don't require handler init callback 2012-08-17 17:34:41 -04:00
r128 drm: kill reclaim_buffers callback 2012-07-19 22:50:28 -04:00
radeon drm/radeon/ss: use num_crtc rather than hardcoded 6 2012-08-21 18:52:56 -04:00
savage drm/savage: clean up reclaim_buffers 2012-07-19 22:50:16 -04:00
sis drm/sis: fixup sis_mm ioctl structs 2012-07-19 22:51:58 -04:00
tdfx drm: kill reclaim_buffers callback 2012-07-19 22:50:28 -04:00
ttm drm: Handle io prot correctly for MIPS. 2012-08-24 09:41:05 +10:00
udl Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2012-09-03 12:05:01 +10:00
via drm/via: clean up reclaim_buffers 2012-07-19 22:48:28 -04:00
vmwgfx drm: stop vmgfx driver explosion 2012-08-22 09:26:50 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c drm: kill dma queue support 2012-07-19 22:50:55 -04:00
drm_cache.c
drm_context.c
drm_crtc_helper.c drm: Don't initialize local ret variable when not needed 2012-05-22 10:32:58 +01:00
drm_crtc.c drm: Use stdint types for consistency 2012-05-29 11:07:09 +01:00
drm_debugfs.c drm: kill dma queue support 2012-07-19 22:50:55 -04:00
drm_dma.c drm: kill dma queue support 2012-07-19 22:50:55 -04:00
drm_dp_i2c_helper.c
drm_drv.c drm: kill dma queue support 2012-07-19 22:50:55 -04:00
drm_edid_load.c drm: remove the raw_edid field from struct drm_display_info 2012-08-24 09:37:36 +10:00
drm_edid_modes.h
drm_edid.c drm: remove the raw_edid field from struct drm_display_info 2012-08-24 09:37:36 +10:00
drm_encoder_slave.c
drm_fb_helper.c Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2012-09-03 12:05:01 +10:00
drm_fops.c drm: track dev_mapping in more robust and flexible way 2012-07-25 14:09:30 +10:00
drm_gem.c drm: Add colouring to the range allocator 2012-07-16 05:59:37 +10:00
drm_global.c
drm_hashtab.c
drm_info.c drm: kill dma queue support 2012-07-19 22:50:55 -04:00
drm_ioc32.c
drm_ioctl.c drm/prime: expose capability flags for userspace. 2012-05-18 11:12:16 +01:00
drm_irq.c drm: Add missing static storage class specifier in drm_irq.c file 2012-08-24 10:00:56 +10:00
drm_lock.c drm: ditch strange DRIVER_DMA_QUEUE only error bail-out 2012-07-19 22:50:47 -04:00
drm_memory.c
drm_mm.c drm: Add colouring to the range allocator 2012-07-16 05:59:37 +10:00
drm_modes.c drm: Remove two unused fields from struct drm_display_mode 2012-08-22 09:27:27 +10:00
drm_pci.c drm/pci: add support for getting the supported link bw. 2012-07-19 22:29:25 -04:00
drm_platform.c
drm_prime.c drm/prime: add exported buffers to current fprivs imported buffer list (v2) 2012-05-23 10:46:03 +01:00
drm_proc.c drm: Add missing static storage class specifiers in drm_proc.c file 2012-08-22 09:30:00 +10:00
drm_scatter.c
drm_stub.c drm: Don't initialize local ret variable when not needed 2012-05-22 10:32:58 +01:00
drm_sysfs.c drm: fail gracefully when proc isn't setup. 2012-07-16 05:57:03 +10:00
drm_trace_points.c
drm_trace.h
drm_usb.c
drm_vm.c drm: Handle io prot correctly for MIPS. 2012-08-24 09:41:05 +10:00
Kconfig Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next 2012-08-27 16:22:20 +10:00
Makefile drm/kms: driver for virtual cirrus under qemu 2012-05-17 11:02:24 +01:00
README.drm

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html