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OpenCloudOS-Kernel/drivers/gpu/drm
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Chris Wilson d25f71a162 drm/i915: Return immediately if trylock fails for direct-reclaim 
Ignore trying to shrink from i915 if we fail to acquire the struct_mutex
in the shrinker while performing direct-reclaim. The trade-off being
(much) lower latency for non-i915 clients at an increased risk of being
unable to obtain a page from direct-reclaim without hitting the
oom-notifier. The proviso being that we still keep trying to hard
obtain the lock for kswapd so that we can reap under heavy memory
pressure.

v2: Taint all mutexes taken within the shrinker with the struct_mutex
subclass as an early warning system, and drop I915_SHRINK_ACTIVE from
vmap to reduce the number of dangerous paths. We also have to drop
I915_SHRINK_ACTIVE from oom-notifier to be able to make the same claim
that ACTIVE is only used from outside context, which fits in with a
longer strategy of avoiding stalls due to scanning active during
shrinking.

The danger in using the subclass struct_mutex is that we declare
ourselves more knowledgable than lockdep and deprive ourselves of
automatic coverage. Instead, we require ourselves to mark up any mutex
taken inside the shrinker in order to detect lock-inversion, and if we
miss any we are doomed to a deadlock at the worst possible moment.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190107115509.12523-1-chris@chris-wilson.co.uk
 		2019-01-08 09:28:18 +00:00
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amd drm i915 gvt, amdgpu, core fixes 2019-01-05 18:25:19 -08:00
arc drm: replace "drm_dev_unref" function with "drm_dev_put" 2018-11-24 22:12:54 +01:00
arm drm: mali-dp: Enable Mali-DP tiled buffer formats 2018-11-02 09:57:27 +00:00
armada Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
ast drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
atmel-hlcdc drm/atmel-hlcdc: Use drm_fbdev_generic_setup() 2018-11-01 15:24:22 +01:00
bochs Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-11-19 11:07:52 +10:00
bridge drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
cirrus drm-misc-next for v4.21, part 2: 2018-11-22 12:54:38 +10:00
etnaviv Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
exynos drm/exynos: fimd: Make pixel blend mode configurable 2018-12-14 15:46:15 +09:00
fsl-dcu drm/fsl-dcu: Use drm_fbdev_generic_setup() 2018-11-01 15:23:58 +01:00
gma500 Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
hisilicon drm/ttm: initialize globals during device init (v2) 2018-11-05 14:21:21 -05:00
i2c Merge branch 'drm-tda9950-fixes' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-fixes 2018-10-04 10:32:14 +10:00
i810 drm/i810: off by one in i810_dma_vertex() 2018-07-03 15:00:42 +02:00
i915 drm/i915: Return immediately if trylock fails for direct-reclaim 2019-01-08 09:28:18 +00:00
imx drm/imx: ipuv3-plane: add IDMAC timeout warning 2018-11-05 14:56:04 +01:00
lib
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mediatek drm/mediatek: Only try to attach bridge if there is one 2018-12-03 11:08:22 +08:00
meson drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
mga
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mgag200 drm/ttm: initialize globals during device init (v2) 2018-11-05 14:21:21 -05:00
msm Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
mxsfb drm: replace "drm_dev_unref" function with "drm_dev_put" 2018-11-24 22:12:54 +01:00
nouveau fbdev changes for v4.21: 2019-01-05 18:15:37 -08:00
omapdrm drm/omap: fix incorrect union usage 2018-12-03 14:46:30 +02:00
panel drm/panel: simple: Add AUO G101EVN010 panel support 2018-12-03 17:04:48 +01:00
pl111 drm/pl111: add of_node_put() 2018-11-28 09:31:07 -08:00
qxl Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
r128
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radeon mm/mmu_notifier: use structure for invalidate_range_start/end callback 2018-12-28 12:11:50 -08:00
rcar-du drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
rockchip drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
savage drm/savage: off by one in savage_bci_cmdbuf() 2018-07-04 14:27:01 +02:00
scheduler drm/scheduler: Add drm_sched_suspend/resume_timeout() 2018-12-05 17:56:16 -05:00
selftests drm/selftest: fix spelling mistake "dimention" -> "dimension" 2018-12-11 15:19:42 +01:00
shmobile drm: replace "drm_dev_unref" function with "drm_dev_put" 2018-11-24 22:12:54 +01:00
sis
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sti drm/sti: remove set but not used variable 'priv' 2018-11-13 12:07:18 +01:00
stm drm/stm: Use drm_fbdev_generic_setup() 2018-10-25 17:00:28 +02:00
sun4i drm/sun4i: Add compatible for H6 display engine 2018-12-04 08:46:28 +01:00
tdfx
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tegra drm/tegra: sor: Reset the SOR if possible 2018-12-06 18:58:32 +01:00
tilcdc drm/tilcdc: Use drm_fbdev_generic_setup() 2018-11-01 15:25:41 +01:00
tinydrm drm/tinydrm: Use kmemdup rather than duplicating its implementation in repaper_spi_transfer() 2018-12-04 15:57:42 +01:00
ttm drm/ttm: Use drm_debug_printer for all ttm_bo_mem_space_debug output 2018-12-21 15:27:58 -05:00
tve200 drm: replace "drm_dev_unref" function with "drm_dev_put" 2018-11-24 22:12:54 +01:00
udl DRM: UDL: get rid of useless vblank initialization 2018-10-23 15:59:01 +02:00
v3d Final changes to drm-misc-next for v4.21: 2018-12-07 11:23:05 +10:00
vc4 drm: revert "expand replace_fence to support timeline point v2" 2018-12-05 11:01:11 +01:00
vgem drm/vgem: Fix typo in driver feature flags 2018-11-05 15:31:51 +00:00
via treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
virtio Merge remote-tracking branch 'drm/drm-next' into drm-misc-next 2018-11-29 16:12:50 +01:00
vkms drm/vkms: Remove set but not used variable 'vkms_obj' 2018-12-04 11:47:27 +01:00
vmwgfx IOMMU Updates for Linux v4.21 2019-01-01 15:55:29 -08:00
xen drm/xen-front: Use Xen common shared buffer implementation 2018-12-18 12:16:13 -05:00
zte drm/zte: Use drm_atomic_helper_shutdown 2018-10-05 18:04:10 +02:00
Kconfig drm/fb_helper: Allow leaking fbdev smem_start 2018-10-03 21:08:21 +02:00
Makefile Merge tag 'vmwgfx-next-2018-12-05' of git://people.freedesktop.org/~thomash/linux into drm-next 2018-12-06 13:43:56 +10:00
ati_pcigart.c
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drm_agpsupport.c
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drm_atomic.c drm: Add a new plane property to send damage during plane update 2018-12-05 10:00:35 +01:00
drm_atomic_helper.c Final changes to drm-misc-next for v4.21: 2018-12-07 11:23:05 +10:00
drm_atomic_state_helper.c drm: Put damage blob when destroy plane state 2018-12-24 11:53:50 +01:00
drm_atomic_uapi.c Merge tag 'vmwgfx-next-2018-12-05' of git://people.freedesktop.org/~thomash/linux into drm-next 2018-12-06 13:43:56 +10:00
drm_auth.c drm: set is_master to 0 upon drm_new_set_master() failure 2018-11-26 16:14:27 -05:00
drm_blend.c drm: Clarify DRM_MODE_REFLECT_X/Y documentation 2018-09-11 11:21:30 +01:00
drm_bridge.c drm: bridge: document bridge attach/detach imbalance 2018-09-13 11:28:12 +02:00
drm_bufs.c drm: un-inline drm_legacy_findmap() 2019-01-02 11:37:11 +02:00
drm_cache.c
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drm_client.c drm/gem: Add drm_gem_object_funcs 2018-11-20 14:56:18 +01:00
drm_color_mgmt.c drm: Add DRM_MODESET_LOCK_BEGIN/END helpers 2018-11-29 10:48:31 -05:00
drm_connector.c Merge branch 'drm-next-4.21' of git://people.freedesktop.org/~agd5f/linux into drm-next 2018-12-06 13:29:09 +10:00
drm_context.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_crtc.c Final changes to drm-misc-next for v4.21: 2018-12-07 11:23:05 +10:00
drm_crtc_helper.c drm: Remove transitional helpers 2018-10-05 18:04:10 +02:00
drm_crtc_helper_internal.h
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drm_crtc_internal.h drm: refuse ADDFB2 ioctl for broken bigendian drivers 2018-09-10 07:10:36 +02:00
drm_damage_helper.c drm: fix null pointer dereference on null state pointer 2018-12-24 11:52:43 +01:00
drm_debugfs.c drm: Merge drm_info.c into drm_debugfs.c 2018-11-22 09:52:27 +01:00
drm_debugfs_crc.c Revert "drm: crc: Wait for a frame before returning from open()" 2018-08-22 09:50:16 -07:00
drm_dma.c
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drm_dp_aux_dev.c
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drm_dp_cec.c drm: Do not call drm_dp_cec_set_edid() while registering DP connectors 2018-10-11 10:52:35 +02:00
drm_dp_dual_mode_helper.c
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drm_dp_helper.c drm/i915: Disable PSR in Apple panels 2018-12-04 12:12:28 -08:00
drm_dp_mst_topology.c Revert "drm/dp_mst: Skip validating ports during destruction, just ref" 2018-11-28 16:22:17 -05:00
drm_drv.c drm-misc-next for v4.21: 2018-11-29 10:28:49 +10:00
drm_dsc.c drm/dsc: Add helpers for DSC picture parameter set infoframes 2018-11-27 18:35:17 -08:00
drm_dumb_buffers.c drm-misc-next for 4.19: 2018-06-28 13:29:07 +10:00
drm_edid.c drm, i915, amdgpu, bridge + core quirk 2018-11-02 10:58:20 -07:00
drm_edid_load.c
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drm_encoder.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_encoder_slave.c
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drm_fb_cma_helper.c drm-misc-next for v4.21, part 1: 2018-11-19 10:40:33 +10:00
drm_fb_helper.c drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
drm_file.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
drm_flip_work.c
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drm_fourcc.c drm: Introduce new DRM_FORMAT_XYUV 2018-11-20 16:20:13 +02:00
drm_framebuffer.c drm: Add macro to export functions only when CONFIG_DRM_DEBUG_SELFTEST is enabled 2018-11-02 09:58:10 +00:00
drm_gem.c drm/gem: Add drm_gem_object_funcs 2018-11-20 14:56:18 +01:00
drm_gem_cma_helper.c drm/cma-helper: Add DRM_GEM_CMA_VMAP_DRIVER_OPS 2018-11-20 14:57:25 +01:00
drm_gem_framebuffer_helper.c drm/fourcc: Add char_per_block, block_w and block_h in drm_format_info 2018-11-02 09:55:27 +00:00
drm_hashtab.c treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
drm_internal.h drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
drm_ioc32.c
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drm_ioctl.c drm/ioctl: Fix Spectre v1 vulnerabilities 2018-12-20 08:13:29 +01:00
drm_irq.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_kms_helper_common.c
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drm_lease.c drm pull request for 4.21-rc1 2018-12-25 11:48:26 -08:00
drm_legacy.h
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drm_lock.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_memory.c drm: Shift * to be adjacent to pointer name 2018-10-16 14:39:25 +02:00
drm_mipi_dsi.c drm: Add support for pps and compression mode command packet 2018-07-25 07:51:05 -04:00
drm_mm.c
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drm_mode_config.c Merge tag 'vmwgfx-next-2018-12-05' of git://people.freedesktop.org/~thomash/linux into drm-next 2018-12-06 13:43:56 +10:00
drm_mode_object.c drm: Remove 80-column line in drm_mode_object.c 2018-11-01 18:54:05 +01:00
drm_modes.c drm: Convert to using %pOFn instead of device_node.name 2018-10-01 10:16:39 +02:00
drm_modeset_helper.c drm: Unexport primary plane helpers 2018-10-05 18:06:49 +02:00
drm_modeset_lock.c drm: Add DRM_MODESET_LOCK_BEGIN/END helpers 2018-11-29 10:48:31 -05:00
drm_of.c drm/doc: Include drm_of.c helpers 2018-07-13 18:40:28 +02:00
drm_panel.c This is the 4.19-rc6 release 2018-10-04 11:03:34 +10:00
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Do rotation quirk for new GPD Win2 FW 2018-11-15 10:55:30 +01:00
drm_pci.c drm/drm_pci.c: Use dma_zalloc_coherent 2018-10-23 15:59:01 +02:00
drm_plane.c drm: Add DRM_MODESET_LOCK_BEGIN/END helpers 2018-11-29 10:48:31 -05:00
drm_plane_helper.c drm: Unexport drm_plane_helper_check_update 2018-10-05 22:45:19 +02:00
drm_prime.c drm/prime: Fix drm_gem_prime_mmap() stack use 2018-11-22 15:44:05 +01:00
drm_print.c drm: Add puts callback for the coredump printer 2018-07-30 08:49:41 -04:00
drm_probe_helper.c drm: drop _mode_ from remaining connector functions 2018-07-13 18:40:27 +02:00
drm_property.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_rect.c
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drm_scatter.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_scdc_helper.c
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drm_simple_kms_helper.c drm/tinydrm: Advertise that we can do only DRM_FORMAT_MOD_LINEAR. 2018-10-30 13:01:50 -07:00
drm_syncobj.c drm: revert "expand replace_fence to support timeline point v2" 2018-12-05 11:01:11 +01:00
drm_sysfs.c drm/lease: Send a distinct uevent 2018-11-30 10:57:18 +01:00
drm_trace.h
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drm_trace_points.c
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drm_vblank.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_vm.c
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drm_vma_manager.c drm: Remove "protection" around drm_vma_offset_manager_destroy() 2018-09-04 19:00:32 +01:00
drm_writeback.c drm: writeback: Fix doc that says connector should be disconnected 2018-07-16 16:35:27 +01:00