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d4bd7776a7
linux/include/drm
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Christian König d4bd7776a7 drm/ttm: rework ttm_tt page limit v4 
TTM implements a rather extensive accounting of allocated memory.

There are two reasons for this:
1. It tries to block userspace allocating a huge number of very small
   BOs without accounting for the kmalloced memory.

2. Make sure we don't over allocate and run into an OOM situation
   during swapout while trying to handle the memory shortage.

This is only partially a good idea. First of all it is perfectly
valid for an application to use all of system memory, limiting it to
50% is not really acceptable.

What we need to take care of is that the application is held
accountable for the memory it allocated. This is what control
mechanisms like memcg and the normal Linux page accounting already do.

Making sure that we don't run into an OOM situation while trying to
cope with a memory shortage is still a good idea, but this is also
not very well implemented since it means another opportunity of
recursion from the driver back into TTM.

So start to rework all of this by implementing a shrinker callback which
allows for TT object to be swapped out if necessary.

v2: Switch from limit to shrinker callback.
v3: fix gfp mask handling, use atomic for swapable_pages, add debugfs
v4: drop the extra gfp_mask checks

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208133226.36955-1-christian.koenig@amd.com
2021-02-09 17:27:12 +01:00
..
bridge drm/bridge: dw-mipi-dsi: permit configuring the escape clock rate 2020-09-11 15:01:36 +02:00
i2c
ttm drm/ttm: rework ttm_tt page limit v4 2021-02-09 17:27:12 +01:00
amd_asic_type.h drm/amdgpu: add dimgrey_cavefish asic type 2020-10-12 14:00:01 -04:00
drm_agpsupport.h drm: Inline AGP wrappers into their only callers 2021-01-13 14:21:53 +01:00
drm_atomic_helper.h drm: automatic legacy gamma support 2020-12-15 15:46:03 +02:00
drm_atomic_state_helper.h drm/bridge: Add a drm_bridge_state object 2020-01-31 16:00:21 +01:00
drm_atomic_uapi.h
drm_atomic.h drm: Introduce a drm_crtc_commit_wait helper 2021-01-21 12:11:04 +01:00
drm_audio_component.h ALSA: hda/i915 - fix list corruption with concurrent probes 2020-10-09 16:46:04 +02:00
drm_auth.h
drm_blend.h
drm_bridge_connector.h drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bridge.h drm: drm_bridge.h: delete duplicated word in comment 2020-07-15 14:02:34 +02:00
drm_cache.h MIPS: Loongson64: Rename CPU TYPES 2019-10-31 15:03:10 -07:00
drm_client.h drm/gem: Store client buffer mappings as struct dma_buf_map 2020-11-09 09:19:45 +01:00
drm_color_mgmt.h drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.h Merge tag 'topic/dp-hdmi-2.1-pcon-2020-12-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2021-01-07 11:02:25 +01:00
drm_crtc_helper.h
drm_crtc.h drm: drm_crc: fix a kernel-doc markup 2021-01-14 15:11:46 +01:00
drm_damage_helper.h
drm_debugfs_crc.h
drm_debugfs.h drm/debugfs: remove checks for return value of drm_debugfs functions. 2020-03-18 17:32:20 +01:00
drm_device.h drm: Move struct drm_device.hose to legacy section 2021-01-13 14:22:37 +01:00
drm_displayid.h drm/edid: Replace zero-length array with flexible-array 2020-06-15 23:08:31 -05:00
drm_dp_dual_mode_helper.h
drm_dp_helper.h drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion 2020-12-22 17:52:50 +02:00
drm_dp_mst_helper.h Merge drm/drm-next into drm-intel-next-queued 2020-09-11 20:00:20 -04:00
drm_drv.h drm: Move legacy device list out of drm_driver 2021-01-05 07:20:29 +02:00
drm_dsc.h - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
drm_edid.h drm/edid: Add additional HFVSDB fields for HDMI2.1 2020-12-22 17:39:06 +02:00
drm_encoder_slave.h
drm_encoder.h drm: add drmm_encoder_alloc() 2021-01-04 12:59:33 +01:00
drm_fb_cma_helper.h drm/fb-cma-helpers: Fix include issue 2020-01-09 17:33:41 +01:00
drm_fb_helper.h drm/fb-helper: Rename dirty worker to damage worker 2020-11-24 09:27:55 +01:00
drm_file.h drm/drm_vblank: set the dma-fence timestamp during send_vblank_event 2021-01-22 16:22:29 +05:30
drm_fixed.h
drm_flip_work.h
drm_format_helper.h drm/format-helper: Add drm_fb_swab() 2020-05-26 13:33:08 +02:00
drm_fourcc.h drm/fb: Extend format_info member arrays to handle four planes 2020-01-07 13:16:08 +02:00
drm_framebuffer.h drm/core: Calculate bpp in afbc helper 2020-04-01 14:11:22 +02:00
drm_gem_atomic_helper.h drm/gem: Export helpers for shadow-buffered planes 2021-02-09 14:23:02 +01:00
drm_gem_cma_helper.h drm/cma-helper: Implement mmap as GEM CMA object functions 2020-11-30 13:38:27 +01:00
drm_gem_framebuffer_helper.h drm/core: Add drm_afbc_framebuffer and a corresponding helper 2020-03-18 11:22:05 +01:00
drm_gem_shmem_helper.h drm/shmem-helper: Removed drm_gem_shmem_create_object_cached() 2020-11-24 09:10:33 +01:00
drm_gem_ttm_helper.h drm/ttm: Add vmap/vunmap to TTM and TTM GEM helpers 2020-11-09 09:17:36 +01:00
drm_gem_vram_helper.h drm/ttm: device naming cleanup 2021-01-21 14:51:45 +01:00
drm_gem.h drm: Don't export the drm_gem_dumb_destroy() function 2021-01-05 07:20:25 +02:00
drm_hashtab.h
drm_hdcp.h drm/i915: Fix sha_text population code 2020-09-02 10:48:11 +03:00
drm_ioctl.h
drm_irq.h drm/irq: Add the new api to install irq 2020-12-03 03:57:15 -05:00
drm_lease.h
drm_legacy.h drm: Use a const drm_driver for legacy PCI devices 2021-01-05 07:20:35 +02:00
drm_managed.h drm: Remove drmm_add_final_kfree() declaration from public headers 2020-12-05 20:01:12 +01:00
drm_mipi_dbi.h drm/mipi-dbi: Switch to new kerneldoc syntax for named variable macro argument 2021-01-08 09:54:43 +01:00
drm_mipi_dsi.h drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.h drm: fix spelling error in comments 2020-09-17 13:39:44 +02:00
drm_mode_config.h drm/fb_helper: Support framebuffers in I/O memory 2020-11-09 09:20:00 +01:00
drm_mode_object.h
drm_modes.h drm: document drm_mode_modeinfo 2020-11-20 11:55:41 +01:00
drm_modeset_helper_vtables.h - Add default modes for connectors in unknown state 2021-01-07 13:02:57 +01:00
drm_modeset_helper.h
drm_modeset_lock.h drm/modeset-lock: Take the modeset BKL for legacy drivers 2020-08-17 13:41:50 -04:00
drm_of.h drm: of: Fix linking when CONFIG_OF is not set 2020-01-09 10:40:58 +10:00
drm_panel.h drm/panel: Add helper for reading DT rotation 2020-08-16 17:12:18 +02:00
drm_pciids.h
drm_plane_helper.h
drm_plane.h drm/doc: fix drm_plane_type docs 2021-01-24 10:36:31 +01:00
drm_prime.h drm/prime: split array import functions v4 2020-11-30 15:00:45 +01:00
drm_print.h drm: drm_print.h: fix kernel-doc markups 2020-10-27 11:21:39 +01:00
drm_probe_helper.h
drm_property.h drm: Fix macro name DRM_MODE_PROP_OBJECT in code comment 2021-01-12 09:56:48 +01:00
drm_rect.h drm: drm_rect.h: delete duplicated word in comment 2020-07-15 14:03:02 +02:00
drm_scdc_helper.h drm/scdc: Fix typo in bit definition of SCDC_STATUS_FLAGS 2019-11-04 17:58:46 +01:00
drm_self_refresh_helper.h drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.h drm/simple-kms: Add plane-state helpers 2021-02-08 12:59:59 +01:00
drm_syncobj.h
drm_sysfs.h drm: uevent for connector status change 2019-08-06 13:16:54 +05:30
drm_util.h drm: Move EXPORT_SYMBOL_FOR_TESTS_ONLY under a separate Kconfig 2019-11-07 21:22:15 +00:00
drm_utils.h
drm_vblank_work.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vblank.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vma_manager.h
drm_writeback.h drm/writeback: wire drm_writeback.h to kernel-doc 2020-04-07 17:39:46 +02:00
gma_drm.h
gpu_scheduler.h drm/scheduler: provide scheduler score externally 2021-02-05 10:47:11 +01:00
i915_component.h drm/i915/tgl: Add additional ports for Tiger Lake 2019-07-11 16:31:14 -07:00
i915_drm.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
i915_mei_hdcp_interface.h drm/i915: significantly reduce the use of <drm/i915_drm.h> 2020-02-27 08:35:09 +02:00
i915_pciids.h drm/i915: Sort EHL/JSL PCI IDs 2020-11-06 14:09:30 +02:00
intel_lpe_audio.h
intel-gtt.h iommu/vt-d: Move intel_iommu_gfx_mapped to Intel IOMMU header 2020-09-04 12:12:45 +02:00
spsc_queue.h
task_barrier.h drm: Add Reusable task barrier. 2019-12-18 16:09:12 -05:00