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311770173f
linux/drivers/gpu/drm/i915
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Chris Wilson 311770173f drm/i915/gt: Schedule request retirement when timeline idles 
The major drawback of commit 7e34f4e4aa ("drm/i915/gen8+: Add RC6 CTX
corruption WA") is that it disables RC6 while Skylake (and friends) is
active, and we do not consider the GPU idle until all outstanding
requests have been retired and the engine switched over to the kernel
context. If userspace is idle, this task falls onto our background idle
worker, which only runs roughly once a second, meaning that userspace has
to have been idle for a couple of seconds before we enable RC6 again.
Naturally, this causes us to consume considerably more energy than
before as powersaving is effectively disabled while a display server
(here's looking at you Xorg) is running.

As execlists will get a completion event as each context is completed,
we can use this interrupt to queue a retire worker bound to this engine
to cleanup idle timelines. We will then immediately notice the idle
engine (without userspace intervention or the aid of the background
retire worker) and start parking the GPU. Thus during light workloads,
we will do much more work to idle the GPU faster...  Hopefully with
commensurate power saving!

v2: Watch context completions and only look at those local to the engine
when retiring to reduce the amount of excess work we perform.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112315
References: 7e34f4e4aa ("drm/i915/gen8+: Add RC6 CTX corruption WA")
References: 2248a28384 ("drm/i915/gen8+: Add RC6 CTX corruption WA")
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/20191125105858.1718307-3-chris@chris-wilson.co.uk
(cherry picked from commit 4f88f8747f)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2019-11-25 16:39:07 +02:00
..
display drm/i915/tgl: Add DKL PHY vswing table for HDMI 2019-11-25 15:08:23 +02:00
gem drm/i915: Flush context free work on cleanup 2019-11-18 16:35:57 +02:00
gt drm/i915/gt: Schedule request retirement when timeline idles 2019-11-25 16:39:07 +02:00
gvt drm/i915/gvt: Stop initializing pvinfo through reading mmio 2019-11-08 11:08:07 +08:00
oa drm/i915/tgl: Add perf support on TGL 2019-10-29 12:53:54 +02:00
selftests drm/i915/gt: Call intel_gt_sanitize() directly 2019-11-05 16:04:16 +02:00
i915_active_types.h drm/i915: Split i915_active.mutex into an irq-safe spinlock for the rbtree 2019-11-20 11:53:00 +02:00
i915_active.c drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
i915_active.h drm/i915/selftests: Pretty print the i915_active 2019-10-31 14:43:14 +00:00
i915_buddy.c drm/i915/buddy: add missing call to i915_global_register 2019-09-09 10:58:20 +01:00
i915_buddy.h drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_cmd_parser.c drm/i915/cmdparser: Fix jump whitelist clearing 2019-11-11 08:13:49 -08:00
i915_debugfs.c drm/i915: Extract GT render power state management 2019-10-26 19:28:59 +01:00
i915_debugfs.h
i915_drv.c drm/i915/gen8+: Add RC6 CTX corruption WA 2019-11-14 10:51:54 +10:00
i915_drv.h drm/i915/guc: Skip suspend/resume GuC action on platforms w/o GuC submission 2019-11-18 16:36:44 +02:00
i915_fixed.h
i915_gem_evict.c drm/i915: Move request runtime management onto gt 2019-10-04 15:39:26 +01:00
i915_gem_fence_reg.c drm/i915: set num_fence_regs to 0 if there is no aperture 2019-10-29 10:35:47 +00:00
i915_gem_fence_reg.h drm/i915: Store i915_ggtt as the backpointer on fence registers 2019-10-16 19:41:36 +01:00
i915_gem_gtt.c drm/i915: Leave the aliasing-ppgtt size alone 2019-11-11 10:30:02 +02:00
i915_gem_gtt.h drm/i915: define i915_ggtt_has_aperture 2019-10-29 10:31:40 +00:00
i915_gem.c Backmerge i915 security patches from commit 'ea0b163b13ff' into drm-next 2019-11-14 11:09:06 +10:00
i915_gem.h drm/i915/execlists: Force preemption 2019-10-23 23:52:10 +01:00
i915_getparam.c Backmerge i915 security patches from commit 'ea0b163b13ff' into drm-next 2019-11-14 11:09:06 +10:00
i915_globals.c drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_globals.h drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_gpu_error.c drm/i915: Avoid atomic context for error capture 2019-11-18 16:36:14 +02:00
i915_gpu_error.h drm/i915/tgl: Add gam instdone 2019-10-30 09:15:27 +00:00
i915_ioc32.c
i915_irq.c drm/i915/tgl: Handle AUX interrupts for TC ports 2019-10-28 08:27:04 -07:00
i915_irq.h drm/i915: Extract the GuC interrupt handlers 2019-10-26 19:28:59 +01:00
i915_memcpy.c drm/i915: extract i915_memcpy.h from i915_drv.h 2019-08-09 12:03:25 +03:00
i915_memcpy.h drm/i915: extract i915_memcpy.h from i915_drv.h 2019-08-09 12:03:25 +03:00
i915_mm.c drm/i915: Drop expectations of VM_IO from our GGTT mmappings 2019-08-07 12:06:07 +01:00
i915_params.c drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
i915_params.h drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
i915_pci.c drm/i915/display/cnl+: Handle fused off DSC 2019-10-29 12:12:49 -07:00
i915_perf_types.h drm/i915/perf: Describe structure members in documentation 2019-10-24 15:01:35 +01:00
i915_perf.c drm/i915/perf: don't forget noa wait after oa config 2019-11-18 16:36:19 +02:00
i915_perf.h drm/i915/perf: introduce a versioning of the i915-perf uapi 2019-10-14 21:30:25 +01:00
i915_pmu.c drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
i915_pmu.h drm/i915/pmu: Support multiple GPUs 2019-10-17 10:50:47 +01:00
i915_priolist_types.h drm/i915/gt: Replace hangcheck by heartbeats 2019-10-23 23:52:10 +01:00
i915_pvinfo.h
i915_query.c drm/i915/query: Align flavour of engine data lookup 2019-11-25 15:08:24 +02:00
i915_query.h
i915_reg.h drm/i915/display: Fix TRANS_DDI_MST_TRANSPORT_SELECT definition 2019-11-18 16:36:09 +02:00
i915_request.c drm/i915: Extract GT render power state management 2019-10-26 19:28:59 +01:00
i915_request.h drm/i915: Mark up "sentinel" requests 2019-10-12 08:51:17 +01:00
i915_scatterlist.c
i915_scatterlist.h drm/i915: s/for_each_sgt_dma/for_each_sgt_daddr/ 2019-08-29 21:59:16 +01:00
i915_scheduler_types.h drm/i915: Note the addition of timeslicing to the pretend scheduler 2019-10-11 09:36:16 +01:00
i915_scheduler.c drm/i915: Protect request peeking with RCU 2019-11-05 09:56:03 +02:00
i915_scheduler.h drm/i915/execlists: Don't merely skip submission if maybe timeslicing 2019-10-18 11:23:26 +01:00
i915_selftest.h
i915_suspend.c drm/i915: Drop struct_mutex from suspend state save/restore 2019-10-04 15:39:41 +01:00
i915_suspend.h drm/i915: extract i915_suspend.h from i915_drv.h 2019-08-09 12:03:05 +03:00
i915_sw_fence_work.c drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00
i915_sw_fence_work.h drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00
i915_sw_fence.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_sw_fence.h Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_switcheroo.c drm/i915: split out i915_switcheroo.[ch] from i915_drv.c 2019-10-06 11:25:00 +03:00
i915_switcheroo.h drm/i915: split out i915_switcheroo.[ch] from i915_drv.c 2019-10-06 11:25:00 +03:00
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915: Extract GT render power state management 2019-10-26 19:28:59 +01:00
i915_sysfs.h drm/i915: extract i915_sysfs.h from i915_drv.h 2019-08-09 11:52:09 +03:00
i915_trace_points.c
i915_trace.h drm/i915: Move context management under GEM 2019-10-04 15:39:34 +01:00
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm/i915: Rename "inject_load_failure" module parameter 2019-10-29 15:37:57 +00:00
i915_utils.h drm/i915: Fix i915_inject_load_error() name to read *_probe_* 2019-10-29 15:37:57 +00:00
i915_vgpu.c drm/i915: to make vgpu ppgtt notificaiton as atomic operation 2019-09-06 09:53:12 -07:00
i915_vgpu.h
i915_vma.c drm/i915: Split detaching and removing the vma 2019-10-31 14:52:19 +00:00
i915_vma.h drm/i915: Lift i915_vma_parked() onto the gt 2019-10-21 21:07:56 +01:00
intel_csr.c drm/i915/dmc: Update ICL DMC version to v1.09 2019-09-27 10:20:39 -07:00
intel_csr.h
intel_device_info.c drm/i915/display/cnl+: Handle fused off DSC 2019-10-29 12:12:49 -07:00
intel_device_info.h drm/i915/display/cnl+: Handle fused off DSC 2019-10-29 12:12:49 -07:00
intel_gvt.c drm/i915: Add i915 to i915_inject_probe_failure 2019-08-02 21:14:29 +01:00
intel_gvt.h
intel_memory_region.c drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
intel_memory_region.h drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
intel_pch.c drm/i915: Fix detection for a CMP-V PCH 2019-11-18 16:36:03 +02:00
intel_pch.h drm/i915: Fix detection for a CMP-V PCH 2019-11-18 16:36:03 +02:00
intel_pm.c Backmerge i915 security patches from commit 'ea0b163b13ff' into drm-next 2019-11-14 11:09:06 +10:00
intel_pm.h drm/i915/gen8+: Add RC6 CTX corruption WA 2019-11-05 11:43:07 -08:00
intel_region_lmem.c drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
intel_region_lmem.h drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
intel_runtime_pm.c drm/i915/display: abstract all vgaarb access to intel_vga.[ch] 2019-10-02 13:31:54 +03:00
intel_runtime_pm.h
intel_sideband.c drm/i915: remove unnecessary includes of intel_display_types.h header 2019-08-07 12:43:55 +03:00
intel_sideband.h
intel_uncore.c drm/i915/tgl: Introduce gen12 forcewake ranges 2019-09-13 20:07:36 +01:00
intel_uncore.h drm/i915: Only apply a rmw mmio update if the value changes 2019-09-17 15:25:40 +01:00
intel_wakeref.c drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
intel_wakeref.h drm/i915: Mark up the calling context for intel_wakeref_put() 2019-11-25 15:29:17 +02:00
intel_wopcm.c drm/i915/wopcm: Fix SPDX tag location 2019-08-16 16:50:03 +01:00
intel_wopcm.h drm/i915/wopcm: Don't fail on WOPCM partitioning failure 2019-08-02 21:14:32 +01:00
Kconfig drm/i915: Put future HW and their uAPIs under STAGING & BROKEN 2019-10-27 15:47:10 +00:00
Kconfig.debug drm/i915: Don't select BROKEN 2019-11-06 05:46:04 +10:00
Kconfig.profile drm/i915/gt: Make timeslice duration configurable 2019-10-29 16:23:55 +00:00
Kconfig.unstable drm/i915/lmem: add the fake lmem region 2019-10-31 20:41:47 +00:00
Makefile drm/i915/tgl: Add perf support on TGL 2019-10-29 12:53:54 +02:00