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2d6c4c8423
linux_dsm_epyc7002/drivers/gpu/drm
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Chris Wilson 2d6c4c8423 drm/i915: Use discardable buffers for rings 
The contents of a ring are only valid between HEAD and TAIL, when the
ring is idle (HEAD == TAIL) we can simply let the pages go under memory
pressure if they are not pinned by an active context. Any new content
will be written after HEAD and so the ring will again be valid between
HEAD and TAIL, everything outside can be discarded.

Note that we take care of ensuring that we do not reset the HEAD
backwards following a GPU hang on an idle ring.

The same precautions are what enable us to use stolen memory for rings.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170420101709.27250-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2017-04-20 12:00:32 +01:00
..
amd Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
arc drm: remove drm_vblank_no_hw_counter assignment from driver code 2017-02-07 21:43:55 +01:00
arm drm: convert drivers to use of_graph_get_remote_node 2017-04-06 17:00:27 -04:00
armada drm: Add acquire ctx parameter to ->page_flip(_target) 2017-03-29 09:50:38 +02:00
ast Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
atmel-hlcdc drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
bochs drm/ttm: add io_mem_pfn callback 2017-04-04 23:33:42 -04:00
bridge drm: bridge: analogix: Destroy connector & encoder when unbinding 2017-04-07 13:28:32 -04:00
cirrus Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
etnaviv Linux 4.11-rc6 2017-04-11 07:40:42 +10:00
exynos drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
fsl-dcu drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
gma500 drm: Add acquire ctx to ->gamma_set hook 2017-04-06 10:21:55 +02:00
hisilicon drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
i2c
i810 drm/i810: drop device_is_agp callback 2017-01-26 10:44:43 +01:00
i915 drm/i915: Use discardable buffers for rings 2017-04-20 12:00:32 +01:00
imx Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
lib drm: Add a simple generator of random permutations 2016-12-27 12:34:00 +01:00
mediatek Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
meson drm: convert drivers to use of_graph_get_remote_node 2017-04-06 17:00:27 -04:00
mga lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
mgag200 Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
msm Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2017-04-11 07:47:02 +10:00
mxsfb drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
nouveau Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
omapdrm drm: omap: use common OF graph helpers 2017-04-06 17:00:27 -04:00
panel drm: panels: Add LVDS panel driver 2017-04-04 17:03:35 +03:00
qxl drm/ttm: add io_mem_pfn callback 2017-04-04 23:33:42 -04:00
r128 gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level> 2017-03-01 09:44:11 +01:00
radeon Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
rcar-du drm: rcar-du: Add HDMI outputs to R8A7795 device description 2017-04-04 17:04:21 +03:00
rockchip drm/rockchip: Shutdown all crtcs when unbinding drm 2017-04-07 13:28:32 -04:00
savage drm: Change the return type of the unload hook to void 2017-01-09 11:25:22 +01:00
selftests drm: kselftest: fix spelling mistake: "misalinged" -> "misaligned" 2017-02-26 22:54:47 +01:00
shmobile drm: Add acquire ctx parameter to ->page_flip(_target) 2017-03-29 09:50:38 +02:00
sis drm: Improve drm_mm search (and fix topdown allocation) with rbtrees 2017-02-03 11:10:32 +01:00
sti drm: Create DEFINE_DRM_GEM_CMA_FOPS and roll it out to drivers 2017-03-14 14:38:34 +01:00
sun4i drm: convert drivers to use drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
tdfx
tegra drm/tegra: Don't use modeset_lock_crtc 2017-03-27 17:50:47 +02:00
tilcdc drm: convert drivers to use of_graph_get_remote_node 2017-04-06 17:00:27 -04:00
tinydrm drm/atomic: Introduce drm_atomic_helper_shutdown 2017-03-27 09:43:58 +02:00
ttm Linux 4.11-rc6 2017-04-11 07:40:42 +10:00
udl drm: Add acquire ctx parameter to ->page_flip(_target) 2017-03-29 09:50:38 +02:00
vc4 Linux 4.11-rc6 2017-04-11 07:40:42 +10:00
vgem Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
via drm/via: use get_user_pages_unlocked() 2017-02-28 10:00:50 +01:00
virtio Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
vmwgfx Merge tag 'drm-misc-next-2017-04-07' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-04-11 07:41:10 +10:00
zte drm: zte: remove leftover 'inf' from struct zx_hdmi 2017-03-22 13:44:42 +08:00
ati_pcigart.c
drm_agpsupport.c drm/i810: drop device_is_agp callback 2017-01-26 10:44:43 +01:00
drm_atomic_helper.c drm/atomic: Add connector atomic_check function, v2. 2017-04-06 17:00:27 -04:00
drm_atomic.c drm: extract legacy framebuffer remove 2017-04-06 10:22:43 +02:00
drm_auth.c drm/core: Use recommened kerneldoc for struct member refs 2017-01-25 16:22:42 +01:00
drm_blend.c drm/blend: Use new atomic iterator macros. 2017-03-06 11:43:43 +01:00
drm_bridge.c drm/bridge: Use recommened kerneldoc for struct member refs 2017-01-02 09:17:26 +01:00
drm_bufs.c
drm_cache.c gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level> 2017-02-28 14:32:19 +01:00
drm_color_mgmt.c drm/atomic-helper: Remove legacy backoff hack from gamma_set 2017-04-06 10:22:35 +02:00
drm_connector.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: Add acquire ctx parameter to ->set_config 2017-03-29 09:56:25 +02:00
drm_crtc_internal.h drm: extract legacy framebuffer remove 2017-04-06 10:22:43 +02:00
drm_crtc.c drm: Take mode_config.mutex in setcrtc ioctl 2017-04-06 22:49:50 +02:00
drm_debugfs_crc.c Revert "drm: Don't allow interruptions when opening debugfs/crc" 2017-04-07 16:18:28 -04:00
drm_debugfs.c drm/debugfs: Add kerneldoc 2017-03-24 09:36:06 +01:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c drm: Add name for DRM_DP_DUAL_MODE_LSPCON 2017-02-23 11:06:12 -05:00
drm_dp_helper.c drm/dp: Add missing description to parameter 2017-03-07 16:38:16 -05:00
drm_dp_mst_topology.c drm/dp: Split drm_dp_mst_allocate_vcpi 2017-03-22 21:47:44 +01:00
drm_drv.c Linux 4.10-rc8 2017-02-23 12:10:12 +10:00
drm_dumb_buffers.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_edid_load.c drm: move edid property update and add modes out of edid firmware loader 2017-02-21 15:41:24 +02:00
drm_edid.c Linux 4.11-rc3 2017-03-23 12:05:13 +10:00
drm_encoder_slave.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_encoder.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_fb_cma_helper.c drm: Add mode_config .get_format_info() hook 2017-03-22 19:45:00 +02:00
drm_fb_helper.c drm/fb-helper: Extract _legacy kms functions 2017-04-06 10:23:06 +02:00
drm_file.c drm/gem: Add DEFINE_DRM_GEM_FOPS 2017-03-14 14:38:34 +01:00
drm_flip_work.c
drm_fourcc.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux into drm-misc-next 2017-03-23 08:15:55 +01:00
drm_framebuffer.c drm: extract legacy framebuffer remove 2017-04-06 10:22:43 +02:00
drm_gem_cma_helper.c Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
drm_gem.c drm: Introduce drm_gem_object_{get,put}() 2017-02-28 16:16:43 +01:00
drm_global.c drm: Update TTM initialization documentation 2016-12-30 12:52:10 +01:00
drm_hashtab.c
drm_info.c locking/atomic, kref: Add kref_read() 2017-01-14 11:37:18 +01:00
drm_internal.h drm/debugfs: Add kerneldoc 2017-03-24 09:36:06 +01:00
drm_ioc32.c drm: document drm_ioctl.[hc] 2017-04-04 20:47:54 +02:00
drm_ioctl.c drm: Pass CRTC ID in userspace vblank events 2017-04-04 20:59:12 +01:00
drm_irq.c drm: Pass CRTC ID in userspace vblank events 2017-04-04 20:59:12 +01:00
drm_kms_helper_common.c drm: Remove drmP.h include from drm_kms_helper_common.c 2017-03-09 16:18:02 +01:00
drm_legacy.h drm: compile drm_vm.c only when needed 2017-01-06 11:03:07 +01:00
drm_lock.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
drm_memory.c
drm_mipi_dsi.c
drm_mm.c drm: Micro-optimise drm_mm_for_each_node_in_range() 2017-02-06 16:57:37 +01:00
drm_mode_config.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_mode_object.c Pointer for Markus's image conversion work. 2017-03-14 15:07:33 +01:00
drm_modes.c drm: Rename drm_mode_object_get() 2017-02-28 16:14:53 +01:00
drm_modeset_helper.c drm: Add mode_config .get_format_info() hook 2017-03-22 19:45:00 +02:00
drm_modeset_lock.c drm: Remove drm_modeset_legacy_acquire_ctx and crtc->acquire_ctx 2017-04-05 09:26:45 +02:00
drm_of.c drm: of: introduce drm_of_find_panel_or_bridge 2017-04-06 17:00:27 -04:00
drm_panel.c drm/panel: Constify device node argument to of_drm_find_panel() 2017-01-04 08:30:37 +01:00
drm_pci.c drm: Extract drm_pci.h 2017-03-09 16:18:02 +01:00
drm_plane_helper.c drm: Add acquire ctx parameter to ->set_config 2017-03-29 09:56:25 +02:00
drm_plane.c drm: Only take cursor locks when the cursor plane exists 2017-04-07 13:28:32 -04:00
drm_prime.c drm: Extract drm_prime.h 2017-03-09 16:18:02 +01:00
drm_print.c drm: drm_printer: add __printf validation 2017-02-26 21:43:08 +01:00
drm_probe_helper.c drm/atomic: Acquire connection_mutex lock in drm_helper_probe_single_connector_modes, v4. 2017-04-06 21:29:23 +02:00
drm_property.c drm: Drop modeset_lock_all from the getproperty ioctl 2017-04-05 09:27:16 +02:00
drm_rect.c drm/rect: Fix formatting of example code 2016-12-30 13:35:54 +01:00
drm_scatter.c
drm_scdc_helper.c drm/edid: detect SCDC support in HF-VSDB 2017-03-21 10:15:56 +02:00
drm_simple_kms_helper.c drm: Clarify the role of plane_state argument to drm_simple update(). 2017-03-30 12:02:00 -07:00
drm_sysfs.c drm: Consolidate and document sysfs support 2017-04-04 20:47:54 +02:00
drm_trace_points.c
drm_trace.h drm: Remove drm_pending_event->pid 2017-03-14 14:38:33 +01:00
drm_vm.c drm: remove unnecessary fault wrappers 2017-02-24 17:46:55 -08:00
drm_vma_manager.c drm: Improve drm_mm search (and fix topdown allocation) with rbtrees 2017-02-03 11:10:32 +01:00
Kconfig drm/fb-helper: Add multi buffer support for cma fbdev 2017-02-26 22:11:37 +01:00
Makefile drm: Add SCDC helpers 2017-03-21 10:15:39 +02:00