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Chris Wilson ebece75392 drm/i915: Keep timeline HWSP allocated until idle across the system 
In preparation for enabling HW semaphores, we need to keep in flight
timeline HWSP alive until its use across entire system has completed,
as any other timeline active on the GPU may still refer back to the
already retired timeline. We both have to delay recycling available
cachelines and unpinning old HWSP until the next idle point.

An easy option would be to simply keep all used HWSP until the system as
a whole was idle, i.e. we could release them all at once on parking.
However, on a busy system, we may never see a global idle point,
essentially meaning the resource will be leaked until we are forced to
do a GC pass. We already employ a fine-grained idle detection mechanism
for vma, which we can reuse here so that each cacheline can be freed
immediately after the last request using it is retired.

v3: Keep track of the activity of each cacheline.
v4: cacheline_free() on canceling the seqno tracking
v5: Finally with a testcase to exercise wraparound
v6: Pack cacheline into empty bits of page-aligned vaddr
v7: Use i915_utils to hide the pointer casting around bit manipulation

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190301170901.8340-2-chris@chris-wilson.co.uk
 		2019-03-01 17:40:33 +00:00
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amd Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
arc drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
arm drm/komeda: fix build with drm_modeset_helper.h update 2019-02-11 10:36:00 +01:00
armada drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
ast Merge branch 'drm-next-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-next 2019-02-04 14:57:34 +10:00
atmel-hlcdc drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
bochs drm/bochs: fix bochs_gem_prime_mmap 2019-02-05 10:28:15 +01:00
bridge Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
cirrus drm/cirrus: add plane setup 2019-02-05 10:28:13 +01:00
etnaviv drm-misc-next for 5.1: 2019-02-04 14:42:34 +10:00
exynos drm/exynos: Change Andrzej Pietrasiewicz's e-mail address 2019-02-07 19:59:44 +09:00
fsl-dcu drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
gma500 drm/irq: Ditch DRIVER_IRQ_SHARED 2019-01-29 15:45:21 +01:00
hisilicon drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
i2c drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
i810
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i915 drm/i915: Keep timeline HWSP allocated until idle across the system 2019-03-01 17:40:33 +00:00
imx Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
lib
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mediatek drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
meson Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
mga drm/irq: Ditch DRIVER_IRQ_SHARED 2019-01-29 15:45:21 +01:00
mgag200 Merge branch 'drm-next-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-next 2019-02-04 14:57:34 +10:00
msm Merge https://gitlab.freedesktop.org/drm/msm into drm-next 2019-02-20 12:16:37 +10:00
mxsfb drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
nouveau drm/nouveau/dmem: use dma addresses during migration copies 2019-02-20 09:00:03 +10:00
omapdrm Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
panel drm/panel: simple: Add support for PDA 91-00156-A0 panel 2019-01-28 17:45:28 +01:00
pl111 drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
qxl Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
r128 drm/irq: Ditch DRIVER_IRQ_SHARED 2019-01-29 15:45:21 +01:00
radeon drm-misc-next for 5.1: 2019-02-04 14:42:34 +10:00
rcar-du Merge drm/drm-next into drm-misc-next 2019-02-11 10:35:35 +01:00
rockchip Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
savage drm/savage: mark expected switch fall-throughs 2019-01-30 17:35:29 +01:00
scheduler Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
selftests drm/selftest: fix spelling mistake "dimention" -> "dimension" 2018-12-11 15:19:42 +01:00
shmobile drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
sis
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sti drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
stm drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
sun4i Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
tdfx
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tegra drm/tegra: Changes for v5.1-rc1 2019-02-11 13:32:49 +10:00
tilcdc drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install 2019-01-29 15:45:06 +01:00
tinydrm drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
ttm drm/ttm: Remove ttm_bo_reference and ttm_bo_unref 2019-01-28 11:43:38 -05:00
tve200 drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
udl drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
v3d drm/sched: Refactor ring mirror list handling. 2019-01-25 16:15:36 -05:00
vc4 drm/vc4: Use struct_size() in kzalloc() 2019-02-06 15:16:08 -08:00
vgem dma-buf: make fence sequence numbers 64 bit v2 2018-12-07 12:44:16 +01:00
via drm/via: mark expected switch fall-throughs 2019-01-30 17:35:29 +01:00
virtio Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
vkms Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
vmwgfx Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
xen drm/xen-front: Fix mmap attributes for display buffers 2019-02-04 08:39:31 +02:00
zte drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
Kconfig drm/cma-helper: Remove unused fbdev code 2019-01-17 10:56:38 +01:00
Makefile drm: rcar-du: lvds: Add API to enable/disable clock output 2019-02-08 02:25:56 +02:00
ati_pcigart.c drm/ati_pcigart: Fix error code in drm_ati_pcigart_init() 2018-12-17 10:47:17 +01:00
drm_agpsupport.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_atomic.c drm-misc-next for 5.1: 2019-01-10 05:58:52 +10:00
drm_atomic_helper.c drm/atomic: Add drm_atomic_state->duplicated 2019-02-05 18:19:00 -05:00
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 Linux 5.0-rc7 2019-02-18 13:27:15 +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
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drm_bridge.c drm: bridge: Constify mode arguments to bridge .mode_set() operation 2019-01-14 03:51:14 +02:00
drm_bufs.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
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: Constify drm_color_lut_check() 2019-01-29 23:26:12 +02:00
drm_connector.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_context.c drm: Fix error handling in drm_legacy_addctx 2019-01-07 11:26:31 +01:00
drm_crtc.c drm: Move the legacy kms disable_all helper to crtc helpers 2019-01-11 22:54:29 +01:00
drm_crtc_helper.c drm: Remove use of drm_mode_object 2019-01-15 13:20:56 +01:00
drm_crtc_helper_internal.h
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drm_crtc_internal.h drm: Unexport drm_crtc_force_disable 2019-01-11 15:56:40 +01:00
drm_damage_helper.c drm: prepare for drmP.h removal from drm_modeset_helper.h 2019-02-07 21:48:28 +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
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drm_dma.c
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drm_dp_aux_dev.c
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drm_dp_cec.c
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drm_dp_dual_mode_helper.c
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drm_dp_helper.c drm/dsc: Add kernel documentation for DRM DP DSC helpers 2019-02-08 13:38:51 -08:00
drm_dp_mst_topology.c drm/dp_mst: Remove rebase-detritus in VCPI helper kernel-docs 2019-02-06 13:37:38 -05:00
drm_drv.c drm/docs: improve docs for drm_drv.c 2019-01-12 13:07:30 +01:00
drm_dsc.c drm/dsc: Add kernel documentation for DRM DP DSC helpers 2019-02-08 13:38:51 -08:00
drm_dumb_buffers.c
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drm_edid.c drm/edid: Add display_info.rgb_quant_range_selectable 2019-01-10 19:01:06 +02:00
drm_edid_load.c
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drm_encoder.c
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drm_encoder_slave.c
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drm_fb_cma_helper.c drm/cma-helper: Remove unused fbdev code 2019-01-17 10:56:38 +01:00
drm_fb_helper.c Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
drm_file.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_flip_work.c drm: move drm_can_sleep() to drm_util.h 2019-01-14 10:58:37 +01:00
drm_fourcc.c drm/fourcc: Add new P010, P016 video format 2019-02-08 22:17:08 +01:00
drm_framebuffer.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_gem.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +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/gem-fb-helper: Add drm_gem_fb_create_with_dirty() 2019-01-17 10:56:45 +01:00
drm_hashtab.c
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drm_internal.h drm-misc-next for 5.1: 2019-01-10 05:58:52 +10:00
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/irq: Ditch DRIVER_IRQ_SHARED 2019-01-29 15:45:21 +01:00
drm_kms_helper_common.c
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drm_lease.c Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
drm_legacy.h
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drm_lock.c
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drm_memory.c
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drm_mipi_dsi.c
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drm_mm.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_mode_config.c drm-misc-next for 5.1: 2019-01-10 05:58:52 +10:00
drm_mode_object.c gpu/drm: Fix lock held when returning to user space. 2019-01-10 11:31:58 +01:00
drm_modes.c Linux 5.0-rc7 2019-02-18 13:27:15 +10:00
drm_modeset_helper.c drm: prepare for drmP.h removal from drm_modeset_helper.h 2019-02-07 21:48:28 +01:00
drm_modeset_lock.c drm/atomic: integrate modeset lock with private objects 2018-12-11 15:24:30 +01:00
drm_of.c drm/of: Fix kerneldoc 2019-01-12 13:07:58 +01:00
drm_panel.c drm/panel: Small documentation polish 2019-01-12 13:08:12 +01:00
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 cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
drm_plane.c drm: Auto-set allow_fb_modifiers when given modifiers at plane init 2019-01-11 16:53:55 +01:00
drm_plane_helper.c
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drm_prime.c drm/prime: Fix drm_gem_prime_mmap() stack use 2018-11-22 15:44:05 +01:00
drm_print.c
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drm_probe_helper.c drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_property.c drm: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_rect.c drm: Nuke drm_calc_{h,v}scale_relaxed() 2019-02-07 13:14:06 +02:00
drm_scatter.c
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drm_scdc_helper.c
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drm_simple_kms_helper.c drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_syncobj.c drm/syncobj: remove drm_syncobj_cb and cleanup 2018-12-11 17:38:38 +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: Trivial comment grammar cleanups 2019-02-04 10:21:17 +01:00
drm_vm.c
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drm_vma_manager.c
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drm_writeback.c
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