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ac14fbd460
linux_dsm_epyc7002/drivers/gpu/drm/i915
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Chris Wilson ac14fbd460 drm/i915/scheduler: Support user-defined priorities 
Use a priority stored in the context as the initial value when
submitting a request. This allows us to change the default priority on a
per-context basis, allowing different contexts to be favoured with GPU
time at the expense of lower importance work. The user can adjust the
context's priority via I915_CONTEXT_PARAM_PRIORITY, with more positive
values being higher priority (they will be serviced earlier, after their
dependencies have been resolved). Any prerequisite work for an execbuf
will have its priority raised to match the new request as required.

Normal users can specify any value in the range of -1023 to 0 [default],
i.e. they can reduce the priority of their workloads (and temporarily
boost it back to normal if so desired).

Privileged users can specify any value in the range of -1023 to 1023,
[default is 0], i.e. they can raise their priority above all overs and
so potentially starve the system.

Note that the existing schedulers are not fair, nor load balancing, the
execution is strictly by priority on a first-come, first-served basis,
and the driver may choose to boost some requests above the range
available to users.

This priority was originally based around nice(2), but evolved to allow
clients to adjust their priority within a small range, and allow for a
privileged high priority range.

For example, this can be used to implement EGL_IMG_context_priority
https://www.khronos.org/registry/egl/extensions/IMG/EGL_IMG_context_priority.txt

	EGL_CONTEXT_PRIORITY_LEVEL_IMG determines the priority level of
        the context to be created. This attribute is a hint, as an
        implementation may not support multiple contexts at some
        priority levels and system policy may limit access to high
        priority contexts to appropriate system privilege level. The
        default value for EGL_CONTEXT_PRIORITY_LEVEL_IMG is
        EGL_CONTEXT_PRIORITY_MEDIUM_IMG."

so we can map

	PRIORITY_HIGH -> 1023 [privileged, will failback to 0]
	PRIORITY_MED -> 0 [default]
	PRIORITY_LOW -> -1023

They also map onto the priorities used by VkQueue (and a VkQueue is
essentially a timeline, our i915_gem_context under full-ppgtt).

v2: s/CAP_SYS_ADMIN/CAP_SYS_NICE/
v3: Report min/max user priorities as defines in the uapi, and rebase
internal priorities on the exposed values.

Testcase: igt/gem_exec_schedule
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003203453.15692-9-chris@chris-wilson.co.uk
2017-10-04 17:52:46 +01:00
..
gvt drm/i915/execlists: Distinguish the incomplete context notifies 2017-10-04 17:52:45 +01:00
selftests drm/i915/selftests: Replace wmb() with i915_gem_chipset_flush() 2017-09-29 12:30:17 +01:00
dvo_ch7xxx.c drm/i915/dvo: fix debug logging on unknown DID 2017-06-01 15:53:03 +03:00
dvo_ch7017.c drm/i915/lvds: Remove magic from PLL programming 2017-05-10 13:47:55 +03:00
dvo_ivch.c
dvo_ns2501.c
dvo_sil164.c
dvo_tfp410.c
dvo.h
i915_cmd_parser.c drm/i915: Recreate vmapping even when the object is pinned 2017-08-30 12:08:11 -07:00
i915_debugfs.c Merge drm-upstream/drm-next into drm-intel-next-queued 2017-09-28 15:56:49 +03:00
i915_drv.c drm/i915/scheduler: Support user-defined priorities 2017-10-04 17:52:46 +01:00
i915_drv.h drm/i915/execlists: Keep request->priority for its lifetime 2017-10-04 17:52:46 +01:00
i915_gem_batch_pool.c drm/i915: Reinstate reservation_object zapping for batch_pool objects 2017-06-14 14:06:22 +01:00
i915_gem_batch_pool.h
i915_gem_clflush.c drm/i915: Split obj->cache_coherent to track r/w 2017-08-15 15:46:57 +01:00
i915_gem_clflush.h drm/i915: Force CPU synchronisation even if userspace requests ASYNC 2017-07-27 22:07:24 +02:00
i915_gem_context.c drm/i915/scheduler: Support user-defined priorities 2017-10-04 17:52:46 +01:00
i915_gem_context.h drm/i915: Replace execbuf vma ht with an idr 2017-08-18 11:59:02 +01:00
i915_gem_dmabuf.c drm/i915: Implement dma_buf_ops->kmap 2017-05-03 23:15:02 +01:00
i915_gem_evict.c drm/i915: Convert execbuf to use struct-of-array packing for critical fields 2017-08-18 11:57:36 +01:00
i915_gem_execbuffer.c Merge drm-upstream/drm-next into drm-intel-next-queued 2017-09-28 15:56:49 +03:00
i915_gem_fence_reg.c drm/i915: Add interface to reserve fence registers for vGPU 2017-09-04 16:34:59 +01:00
i915_gem_fence_reg.h
i915_gem_gtt.c drm/i915: Use memset64() to prefill the GTT page 2017-09-28 21:00:48 +01:00
i915_gem_gtt.h drm/i915: Remove the "INDEX" suffix from PPAT marcos 2017-09-14 16:46:36 +03:00
i915_gem_internal.c drm/i915: Split obj->cache_coherent to track r/w 2017-08-15 15:46:57 +01:00
i915_gem_object.c drm/i915: Split obj->cache_coherent to track r/w 2017-08-15 15:46:57 +01:00
i915_gem_object.h drm/i915: Replace execbuf vma ht with an idr 2017-08-18 11:59:02 +01:00
i915_gem_render_state.c drm/i915: Perform an invalidate prior to executing golden renderstate 2017-08-14 19:28:06 +03:00
i915_gem_render_state.h
i915_gem_request.c drm/i915: Introduce a preempt context 2017-10-04 17:52:45 +01:00
i915_gem_request.h drm/i915/scheduler: Support user-defined priorities 2017-10-04 17:52:46 +01:00
i915_gem_shrinker.c drm/i915: wire up shrinkctl->nr_scanned 2017-09-06 17:27:25 -07:00
i915_gem_stolen.c drm/i915: Split obj->cache_coherent to track r/w 2017-08-15 15:46:57 +01:00
i915_gem_tiling.c drm/i915: Fix logical inversion for gen4 quirking 2017-06-07 16:31:34 +03:00
i915_gem_timeline.c drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
i915_gem_timeline.h drm/i915: Rename intel_timeline.sync_seqno[] to .global_sync[] 2017-05-03 11:08:52 +01:00
i915_gem_userptr.c Merge drm-upstream/drm-next into drm-intel-next-queued 2017-09-28 15:56:49 +03:00
i915_gem.c drm/i915: Move i915_gem_restore_fences to i915_gem_resume 2017-09-29 12:30:17 +01:00
i915_gem.h drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
i915_gpu_error.c drm/i915/execlists: Keep request->priority for its lifetime 2017-10-04 17:52:46 +01:00
i915_guc_reg.h
i915_guc_submission.c drm/i915: Make execlist port count variable 2017-09-25 11:33:53 +03:00
i915_ioc32.c
i915_irq.c drm/i915/execlists: Preemption! 2017-10-04 17:52:46 +01:00
i915_memcpy.c
i915_mm.c
i915_oa_bdw.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_bdw.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_bxt.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_bxt.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_cflgt2.c drm/i915/perf: add support for Coffeelake GT2 2017-09-18 19:46:36 +01:00
i915_oa_cflgt2.h drm/i915/perf: add support for Coffeelake GT2 2017-09-18 19:46:36 +01:00
i915_oa_chv.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_chv.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_glk.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_glk.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_hsw.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_hsw.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_kblgt2.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_kblgt2.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_kblgt3.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_kblgt3.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt2.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_sklgt2.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt3.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_sklgt3.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt4.c drm/i915/perf: leave GDT_CHICKEN_BITS programming in configs 2017-08-03 18:18:44 +01:00
i915_oa_sklgt4.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_params.c drm/i915: Remove use_mmio_flip modparm, v2. 2017-10-04 15:51:09 +02:00
i915_params.h drm/i915: Remove use_mmio_flip modparm, v2. 2017-10-04 15:51:09 +02:00
i915_pci.c drm/i915/execlists: Preemption! 2017-10-04 17:52:46 +01:00
i915_perf.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
i915_pvinfo.h drm/i915: Enable guest i915 full ppgtt functionality 2017-08-15 10:12:48 +08:00
i915_reg.h drm/i915/preempt: Default to disabled mid-command preemption levels 2017-10-04 17:52:45 +01:00
i915_selftest.h drm/i915: Don't use MI_STORE_DWORD_IMM on Sandybridge/vcs 2017-08-18 11:55:02 +01:00
i915_suspend.c drm/i915: Move i915_gem_restore_fences to i915_gem_resume 2017-09-29 12:30:17 +01:00
i915_sw_fence.c drm/i915/fence: Avoid del_timer_sync() from inside a timer 2017-09-19 13:06:21 +01:00
i915_sw_fence.h main drm pull for v4.13 2017-07-09 18:48:37 -07:00
i915_syncmap.c drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
i915_syncmap.h drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
i915_sysfs.c drm/i915: add const to bin_attribute 2017-08-03 12:20:09 +02:00
i915_trace_points.c
i915_trace.h drm/i915: Remove defunct trace points 2017-10-04 15:19:20 +01:00
i915_utils.h drm/i915: Store a direct lookup from object handle to vma 2017-06-16 16:54:04 +01:00
i915_vgpu.c drm/i915: Enable guest i915 full ppgtt functionality 2017-08-15 10:12:48 +08:00
i915_vgpu.h drm/i915: Enable guest i915 full ppgtt functionality 2017-08-15 10:12:48 +08:00
i915_vma.c drm/i915: Replace execbuf vma ht with an idr 2017-08-18 11:59:02 +01:00
i915_vma.h drm/i915: Ignore duplicate VMA stored within the per-object handle LUT 2017-08-30 12:17:22 -07:00
intel_acpi.c ACPI: Switch to use generic guid_t in acpi_evaluate_dsm() 2017-06-07 12:20:49 +02:00
intel_atomic_plane.c drm/i915: Pass proper old/new states to intel_plane_atomic_check_with_state() 2017-09-01 16:48:24 +03:00
intel_atomic.c drm/i915/cnl: Fix Cannonlake scaler mode programing. 2017-06-12 09:45:55 -07:00
intel_audio.c drm/i915: always update ELD connector type after get modes 2017-09-20 10:36:34 +03:00
intel_bios.c drm/i915/bios: ignore HDMI on port A 2017-09-25 10:49:55 +03:00
intel_bios.h
intel_breadcrumbs.c i915: Use %pS printk format for direct addresses 2017-09-27 14:23:30 +02:00
intel_cdclk.c drm/i915: Increase poll time for BDW FCLK_DONE 2017-09-12 12:19:57 +03:00
intel_color.c drm/i915: Make i9xx_load_ycbcr_conversion_matrix() static 2017-09-01 10:30:37 -07:00
intel_crt.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_csr.c drm/i915/glk: Fix DMC/DC state idleness calculation 2017-10-04 11:38:33 +03:00
intel_ddi.c drm/i915: Fix DDI PHY init if it was already on 2017-10-03 12:09:52 +03:00
intel_device_info.c drm/i915/cnl: Add support slice/subslice/eu configs 2017-09-26 13:02:44 -07:00
intel_display.c drm/i915: Skip vblank waits for cursor updates when watermarks dont need updating 2017-10-04 09:16:22 +02:00
intel_dp_aux_backlight.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_dp_link_training.c drm/i915: Explicit the connector name for DP link training result 2017-07-19 08:32:42 +02:00
intel_dp_mst.c drm/i915/mst: Print active mst links after update 2017-09-25 15:21:22 +03:00
intel_dp.c drm/i915/dp: Remove useless debug about TPS3 support 2017-09-25 15:22:07 +03:00
intel_dpio_phy.c drm/i915: Fix DDI PHY init if it was already on 2017-10-03 12:09:52 +03:00
intel_dpll_mgr.c drm/i915/cnl: Dump the right pll registers when dumping pipe config. 2017-08-11 11:41:45 -07:00
intel_dpll_mgr.h drm/i915/cnl: Initialize PLLs 2017-06-12 09:42:18 -07:00
intel_drv.h drm/i915: Enable scanline read based on frame timestamps 2017-09-26 10:57:05 +03:00
intel_dsi_dcs_backlight.c drm/i915: Initialize 'data' in intel_dsi_dcs_backlight.c 2017-08-16 18:02:00 +03:00
intel_dsi_pll.c
intel_dsi_vbt.c drm/i915/bxt: use NULL for GPIO connection ID 2017-08-21 11:52:29 +03:00
intel_dsi.c Merge tag 'drm-intel-next-2017-09-07' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-09-28 07:12:44 +10:00
intel_dsi.h
intel_dvo.c drm/i915: Constify states passed to enable/disable/etc. encoder hooks 2017-08-22 17:59:02 +03:00
intel_engine_cs.c drm/i915: Introduce a preempt context 2017-10-04 17:52:45 +01:00
intel_fbc.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_fbdev.c drm/i915: Wake up the device for the fbdev setup 2017-09-04 19:30:45 +03:00
intel_fifo_underrun.c drm/i915: Don't rmw PIPESTAT enable bits 2017-09-25 16:54:09 +03:00
intel_frontbuffer.c
intel_frontbuffer.h
intel_guc_ct.c drm/i915/guc: Introduce buffer based cmd transport 2017-05-26 13:26:53 +01:00
intel_guc_ct.h drm/i915/guc: Introduce buffer based cmd transport 2017-05-26 13:26:53 +01:00
intel_guc_fwif.h drm/i915/guc: Remove WQ_WORKLOAD_SHIFT define 2017-09-13 10:36:48 +01:00
intel_guc_loader.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_guc_log.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_gvt.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_gvt.h drm/i915/gvt: Add gvt options sanitize function 2017-05-30 15:59:47 +03:00
intel_hangcheck.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_hdmi.c drm/i915: Constify states passed to enable/disable/etc. encoder hooks 2017-08-22 17:59:02 +03:00
intel_hotplug.c drm/i915: Introduce intel_hpd_pin function. 2017-08-11 11:53:47 -07:00
intel_huc.c drm/i915/huc: Reorganize HuC authentication 2017-09-26 12:08:03 +03:00
intel_huc.h drm/i915/huc: Move HuC declarations into dedicated header 2017-10-04 19:45:46 +03:00
intel_i2c.c drm/i915: Make i2c lock ops static 2017-09-01 10:30:40 -07:00
intel_lpe_audio.c drm/i915: Stop pretending to mask/unmask LPE audio interrupts 2017-05-26 11:51:18 +03:00
intel_lrc.c drm/i915/execlists: Preemption! 2017-10-04 17:52:46 +01:00
intel_lrc.h drm/i915/execlists: Distinguish the incomplete context notifies 2017-10-04 17:52:45 +01:00
intel_lspcon.c drm/i915/cnl: Fix LSPCON support. 2017-08-16 18:02:13 +03:00
intel_lvds.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_mocs.c drm/i915/cnl: Cannonlake has same MOCS table than Skylake. 2017-06-07 07:29:51 -07:00
intel_mocs.h
intel_modes.c drm/i915: always update ELD connector type after get modes 2017-09-20 10:36:34 +03:00
intel_opregion.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_overlay.c drm/i915: More surgically unbreak the modeset vs reset deadlock 2017-08-14 17:03:36 +02:00
intel_panel.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_pipe_crc.c drm/i915: Beef up of Beef up the IPS vs. CRC workaround 2017-08-28 16:12:47 +03:00
intel_pm.c drm/i915/skl: Fix has_ipc on skl and document WaDisableIPC. 2017-10-03 10:53:48 -07:00
intel_psr.c drm/i915/psr: Set frames before SU entry for psr2 2017-09-28 09:40:34 -07:00
intel_renderstate_gen6.c
intel_renderstate_gen7.c
intel_renderstate_gen8.c
intel_renderstate_gen9.c drm/i915/gen9: Send all components in VF state 2017-08-14 12:15:49 +03:00
intel_renderstate.h
intel_ringbuffer.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_ringbuffer.h drm/i915/execlists: Preemption! 2017-10-04 17:52:46 +01:00
intel_runtime_pm.c drm/i915/cnl: Reprogram DMC firmware after S3/S4 resume 2017-10-04 11:37:57 +03:00
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Make i2c lock ops static 2017-09-01 10:30:40 -07:00
intel_sideband.c
intel_sprite.c drm/i915: Pass the crtc state explicitly to intel_pipe_update_start/end() 2017-08-31 21:23:28 +03:00
intel_tv.c drm/i915: Use mul_u32_u32() for 32b x 32b -> 64b result 2017-09-13 13:27:20 +01:00
intel_uc_fw.c drm/i915/uc: Move uC fw helper code into dedicated files 2017-10-04 19:45:29 +03:00
intel_uc_fw.h drm/i915/uc: Move uC fw helper code into dedicated files 2017-10-04 19:45:29 +03:00
intel_uc.c drm/i915/guc: Move Guc early init into own function 2017-10-04 19:45:52 +03:00
intel_uc.h drm/i915/huc: Move HuC declarations into dedicated header 2017-10-04 19:45:46 +03:00
intel_uncore.c drm/i915: Rename global i915 to i915_modparams 2017-09-22 14:50:36 +03:00
intel_uncore.h drm/i915: Make intel_uncore.h header self-contained 2017-10-04 19:39:23 +03:00
intel_vbt_defs.h drm/i915/bios: amend edp block based on intel_vbt_decode 2017-08-28 11:04:24 +03:00
Kconfig drm/i915/fence: Avoid del_timer_sync() from inside a timer 2017-09-19 13:06:21 +01:00
Kconfig.debug drm/i915: Add SW_SYNC to our recommend testing Kconfig 2017-08-12 10:30:42 +01:00
Makefile drm/i915/uc: Move uC fw helper code into dedicated files 2017-10-04 19:45:29 +03:00