linux/drivers/gpu/drm/drm_cache.c, branch v4.7

x86/cpufeature: Remove cpu_has_clflush

2016-03-31T11:35:09Z

Use the fast variant in the DRM code. Signed-off-by: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Link: http://lkml.kernel.org/r/1459266123-21878-7-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar

drm: Avoid the double clflush on the last cache line in drm_clflush_virt_range()

2015-06-19T15:25:17Z

As the clflush operates on cache lines, and we can flush any byte address, in order to flush all bytes given in the range we issue an extra clflush on the last byte to ensure the last cacheline is flushed. We can can the iteration to be over the actual cache lines to avoid this double clflush on the last byte. Signed-off-by: Chris Wilson Cc: Imre Deak Reviewed-by: Imre Deak Signed-off-by: Daniel Vetter

drm/cache: Use wbinvd helpers

2014-12-16T07:56:55Z

When the original drm code was written there were no centralized functions for doing a coordinated wbinvd across all CPUs. Now (since 2010) there are, so use them instead of rolling a new one. v2: On x86 UP systems the wbinvd_on_all_cpus() is defined as a static inline in smp.h. We must therefore include this file so we don't get compiler errors. This error was found by 0-DAY kernel test infrastructure. We only need this for x86. Cc: Intel GFX Signed-off-by: Ben Widawsky Reviewed-by: Chris Wilson (v1) Signed-off-by: Daniel Vetter

drm: Missed clflushopt in drm_clflush_virt_range

2014-06-02T07:57:31Z

With this commit: 2a0788dc9bc4 x86: Use clflushopt in drm_clflush_virt_range If clflushopt is available on the system, we use it instead of clflush in drm_clflush_virt_range. There were two calls to clflush in this function, but only one was changed to clflushopt. This patch changes the other clflush call to clflushopt. Signed-off-by: Ross Zwisler Reported-by: Matthew Wilcox Cc: David Airlie Cc: dri-devel@lists.freedesktop.org Cc: H Peter Anvin Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Daniel Vetter

Merge tag 'drm-intel-next-2014-04-16' of git://anongit.freedesktop.org/drm-intel into drm-next

2014-04-30T23:11:37Z

drm-intel-next-2014-04-16: - vlv infoframe fixes from Jesse - dsi/mipi fixes from Shobhit - gen8 pageflip fixes for LRI/SRM from Damien - cmd parser fixes from Brad Volkin - some prep patches for CHV, DRRS, ... - and tons of little things all over drm-intel-next-2014-04-04: - cmd parser for gen7 but only in enforcing and not yet granting mode - the batch copying stuff is still missing. Also performance is a bit ... rough (Brad Volkin + OACONTROL fix from Ken). - deprecate UMS harder (i.e. CONFIG_BROKEN) - interrupt rework from Paulo Zanoni - runtime PM support for bdw and snb, again from Paulo - a pile of refactorings from various people all over the place to prep for new stuff (irq reworks, power domain polish, ...) drm-intel-next-2014-04-04: - cmd parser for gen7 but only in enforcing and not yet granting mode - the batch copying stuff is still missing. Also performance is a bit ... rough (Brad Volkin + OACONTROL fix from Ken). - deprecate UMS harder (i.e. CONFIG_BROKEN) - interrupt rework from Paulo Zanoni - runtime PM support for bdw and snb, again from Paulo - a pile of refactorings from various people all over the place to prep for new stuff (irq reworks, power domain polish, ...) Conflicts: drivers/gpu/drm/i915/i915_gem_context.c

drm: Make drm_clflush_virt_range() void*

2014-04-01T20:58:29Z

Currently drm_cflush_virt_rage() takes a char* so the caller probably has to do pointless casting to avoid compiler warnings. Make the argument void* instead to avoid such issues. v2: Use void* arithmetic (Chris) Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson Acked-by: Dave Airlie Signed-off-by: Daniel Vetter

x86: Use clflushopt in drm_clflush_virt_range

2014-02-27T16:26:31Z

If clflushopt is available on the system, use it instead of clflush in drm_clflush_virt_range. Signed-off-by: Ross Zwisler Link: http://lkml.kernel.org/r/1393441612-19729-5-git-send-email-ross.zwisler@linux.intel.com Signed-off-by: H. Peter Anvin

x86: Use clflushopt in drm_clflush_page

2014-02-27T16:26:20Z

If clflushopt is available on the system, use it instead of clflush in drm_clflush_page. Signed-off-by: Ross Zwisler Link: http://lkml.kernel.org/r/1393441612-19729-4-git-send-email-ross.zwisler@linux.intel.com Signed-off-by: H. Peter Anvin

lib/scatterlist: sg_page_iter: support sg lists w/o backing pages

2013-03-27T16:13:44Z

The i915 driver uses sg lists for memory without backing 'struct page' pages, similarly to other IO memory regions, setting only the DMA address for these. It does this, so that it can program the HW MMU tables in a uniform way both for sg lists with and without backing pages. Without a valid page pointer we can't call nth_page to get the current page in __sg_page_iter_next, so add a helper that relevant users can call separately. Also add a helper to get the DMA address of the current page (idea from Daniel). Convert all places in i915, to use the new API. Signed-off-by: Imre Deak Reviewed-by: Damien Lespiau Signed-off-by: Daniel Vetter

drm: handle compact dma scatter lists in drm_clflush_sg()

2013-03-19T08:50:22Z

So far the assumption was that each scatter list entry contains a single page. This might not hold in the future, when we'll introduce compact scatter lists, so prepare for this here. Reference: http://www.spinics.net/lists/dri-devel/msg33917.html Signed-off-by: Imre Deak Acked-by: Dave Airlie Signed-off-by: Daniel Vetter