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Userspace applications such as PowerTOP are interesting in being able to read the current GPU frequency. The patch itself sets up a generic array for gen6 attributes so we can easily add other items in the future (and it also happens to be just about the cleanest way to do this). The patch is a nice addition to commit 1ac02185dff3afac146d745ba220dc6672d1d162 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Thu Aug 30 13:26:48 2012 +0200 drm/i915: add a tracepoint for gpu frequency changes Reading the GPU frequncy can be done by reading a file like: /sys/class/drm/card0/render_frequency_mhz Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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ast | ||
cirrus | ||
exynos | ||
gma500 | ||
i2c | ||
i810 | ||
i915 | ||
mga | ||
mgag200 | ||
nouveau | ||
r128 | ||
radeon | ||
savage | ||
shmobile | ||
sis | ||
tdfx | ||
ttm | ||
udl | ||
via | ||
vmwgfx | ||
ati_pcigart.c | ||
drm_agpsupport.c | ||
drm_auth.c | ||
drm_buffer.c | ||
drm_bufs.c | ||
drm_cache.c | ||
drm_context.c | ||
drm_crtc_helper.c | ||
drm_crtc.c | ||
drm_debugfs.c | ||
drm_dma.c | ||
drm_dp_i2c_helper.c | ||
drm_drv.c | ||
drm_edid_load.c | ||
drm_edid_modes.h | ||
drm_edid.c | ||
drm_encoder_slave.c | ||
drm_fb_cma_helper.c | ||
drm_fb_helper.c | ||
drm_fops.c | ||
drm_gem_cma_helper.c | ||
drm_gem.c | ||
drm_global.c | ||
drm_hashtab.c | ||
drm_info.c | ||
drm_ioc32.c | ||
drm_ioctl.c | ||
drm_irq.c | ||
drm_lock.c | ||
drm_memory.c | ||
drm_mm.c | ||
drm_modes.c | ||
drm_pci.c | ||
drm_platform.c | ||
drm_prime.c | ||
drm_proc.c | ||
drm_scatter.c | ||
drm_stub.c | ||
drm_sysfs.c | ||
drm_trace_points.c | ||
drm_trace.h | ||
drm_usb.c | ||
drm_vm.c | ||
Kconfig | ||
Makefile | ||
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