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0da715ee60
linux/drivers/gpu/drm/i915
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Chris Wilson 0da715ee60 drm/i915: Disable semaphores on Sandybridge 
I should have admitted defeat long ago as there has been a rare but
persistent error on Sandybridge where semaphore signaling did not
propagate to the waiter, leading to a GPU hang.

With the work on fence signaling for v4.9, the impact of using CPU driven
signaling was greatly reduced wrt to the latency of GPU semaphores,
though without logical rings support, the benefit of reordering work to
avoid bubbles is not realised (i.e. as it stands fence signaling is just
a slower, more costly version of HW semaphores; but works more
consistently). As a rough indicator of the difference,

with semaphores:
Sequential (3 engines, 1 processes): average 5.470us per cycle [expected 4.988us]
w/o semaphores:
Sequential (3 engines, 1 processes): average 15.771us per cycle [expected 4.923us]

In comparison, v3.4:
with semaphores:
Sequential (3 engines, 1 processes): average 16.066us per cycle [expected 11.842us]
w/o semaphores:
Sequential (3 engines, 1 processes): average 23.460us per cycle [expected 11.839us]

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54226 #and 100+ dupes
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171120205504.21892-3-chris@chris-wilson.co.uk
2017-11-20 21:59:08 +00:00
..
gvt drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
selftests drm/i915/selftest: Make guc clients static 2017-11-20 16:50:27 +00:00
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: Silence smatch for cmdparser 2017-11-07 16:52:24 +00:00
i915_debugfs.c drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
i915_drv.c drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
i915_drv.h drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
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: Refactor testing obj->mm.pages 2017-10-16 20:44:19 +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: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
i915_gem_context.h drm/i915: Record the default hw state after reset upon load 2017-11-10 17:23:10 +00:00
i915_gem_dmabuf.c drm/i915: s/sg_mask/sg_page_sizes/ 2017-10-09 17:07:29 +01:00
i915_gem_evict.c Linux 4.14-rc7 2017-11-02 12:40:41 +10:00
i915_gem_execbuffer.c drm/i915: Automatic i915_switch_context for legacy 2017-11-20 15:56:16 +00:00
i915_gem_fence_reg.c drm/i915: Track user GTT faulting per-vma 2017-10-09 17:07:29 +01:00
i915_gem_fence_reg.h
i915_gem_gtt.c drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
i915_gem_gtt.h drm/i915: support 64K pages for the 48b PPGTT 2017-10-07 10:11:57 +01:00
i915_gem_internal.c drm/i915: s/sg_mask/sg_page_sizes/ 2017-10-09 17:07:29 +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: Introduce GEM proxy 2017-11-14 12:26:36 +00:00
i915_gem_render_state.c drm/i915: Pull the unconditional GPU cache invalidation into request construction 2017-11-20 15:56:16 +00:00
i915_gem_render_state.h drm/i915: Stop caching the "golden" renderstate 2017-11-10 17:23:22 +00:00
i915_gem_request.c drm/i915: Automatic i915_switch_context for legacy 2017-11-20 15:56:16 +00:00
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: Idle the GPU before shinking everything 2017-11-09 16:18:31 +02:00
i915_gem_stolen.c drm/i915: Use ELK stolen memory reserved detection for ILK 2017-11-15 18:49:10 +02:00
i915_gem_tiling.c drm/i915: Introduce GEM proxy 2017-11-14 12:26:36 +00:00
i915_gem_timeline.c
i915_gem_timeline.h
i915_gem_userptr.c drm/i915: Mark the userptr invalidate workqueue as WQ_MEM_RECLAIM 2017-11-17 10:58:55 +00:00
i915_gem.c drm/i915: Disable semaphores on Sandybridge 2017-11-20 21:59:08 +00:00
i915_gem.h drm/i915: Print the condition causing GEM_BUG_ON 2017-11-16 15:35:47 +02:00
i915_gemfs.c drm/i915/gemfs: enable THP 2017-10-07 10:11:43 +01:00
i915_gemfs.h drm/i915: introduce simple gemfs 2017-10-07 10:11:41 +01:00
i915_gpu_error.c drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
i915_guc_reg.h drm/i915/guc: Simplify programming of GUC_SHIM_CONTROL 2017-11-08 21:34:19 +00:00
i915_ioc32.c
i915_irq.c drm/i915: Update execlists tasklet naming 2017-11-16 15:01:31 +00:00
i915_memcpy.c
i915_mm.c
i915_oa_bdw.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_bdw.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_bxt.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_bxt.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_cflgt2.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_cflgt2.h drm/i915/perf: add support for Coffeelake GT2 2017-09-18 19:46:36 +01:00
i915_oa_cflgt3.c drm/i915/perf: add support for Coffeelake GT3 2017-11-13 15:59:03 +00:00
i915_oa_cflgt3.h drm/i915/perf: add support for Coffeelake GT3 2017-11-13 15:59:03 +00:00
i915_oa_chv.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_chv.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_cnl.c drm/i915/perf: enable perf support on CNL 2017-11-13 15:59:24 +00:00
i915_oa_cnl.h drm/i915/perf: enable perf support on CNL 2017-11-13 15:59:24 +00:00
i915_oa_glk.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_glk.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_hsw.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_hsw.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_kblgt2.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_kblgt2.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_kblgt3.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_kblgt3.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt2.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_sklgt2.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt3.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_sklgt3.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_oa_sklgt4.c drm/i915: ensure oa config uuid is null terminated 2017-11-02 14:52:58 +00:00
i915_oa_sklgt4.h drm/i915/perf: prune OA configs 2017-08-03 18:18:05 +01:00
i915_params.c drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
i915_params.h drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
i915_pci.c drm/i915: remove g4x lowfreq_avail and has_pipe_cxsr 2017-10-19 15:52:52 +03:00
i915_perf.c drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
i915_pvinfo.h drm/i915: enable to read CSB and CSB write pointer from HWSP in GVT-g VM 2017-10-16 13:56:29 +03:00
i915_reg.h Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk" 2017-11-17 09:52:14 -08:00
i915_selftest.h drm/i915/selftests: Reduce the volume of the timeout message 2017-11-10 11:31:58 +00:00
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: Convert timers to use timer_setup() 2017-10-18 14:56:10 +03:00
i915_sw_fence.h main drm pull for v4.13 2017-07-09 18:48:37 -07:00
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915: Rename intel_enable_rc6 to intel_rc6_enabled 2017-10-11 08:57:02 +01:00
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: Warn in debug builds of incorrect usages of ptr_pack_bits 2017-11-03 09:28:06 +00:00
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 to read CSB and CSB write pointer from HWSP in GVT-g VM 2017-10-16 13:56:29 +03:00
i915_vma.c drm/i915: Mark up i915_vma_unbind() as a potential sleeper 2017-11-09 22:06:09 +00:00
i915_vma.h drm/i915: Track user GTT faulting per-vma 2017-10-09 17:07:29 +01:00
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: Fix kerneldocs for intel_audio.c 2017-11-15 17:32:54 +02:00
intel_bios.c Merge airlied/drm-next into drm-intel-next-queued 2017-11-14 07:43:00 -08:00
intel_bios.h
intel_breadcrumbs.c drm/i915: Clear breadcrumb node when cancelling signaling 2017-11-16 14:17:08 +00:00
intel_cdclk.c drm/i915/cnl: Allow 2 pixel per clock on Cannonlake. 2017-10-25 10:36:01 -07:00
intel_color.c drm/i915: Pass crtc_state to ips toggle functions, v2 2017-11-17 12:14:25 +01:00
intel_crt.c drm/i915: Eliminate crtc->config usage from CRT code 2017-11-09 20:05:18 +02:00
intel_csr.c drm/i915: Silence compiler for csr_load_work_fn() 2017-11-07 17:50:10 +00:00
intel_ddi.c drm/i915: Generalize transcoder looping 2017-11-14 16:17:51 +02:00
intel_device_info.c drm/i915: Remove pre-production pooled-EU w/a for Broxton 2017-11-15 18:04:18 +00:00
intel_display.c drm/i915: Pass crtc_state to ips toggle functions, v2 2017-11-17 12:14:25 +01:00
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: Nuke intel_digital_port->port 2017-11-09 20:06:14 +02:00
intel_dp.c drm/i915: Pass crtc_state to ips toggle functions, v2 2017-11-17 12:14:25 +01:00
intel_dpio_phy.c drm/i915: Nuke intel_digital_port->port 2017-11-09 20:06:14 +02:00
intel_dpll_mgr.c drm/i915/cnl: Simplify dco_fraction calculation. 2017-11-16 09:45:39 -08:00
intel_dpll_mgr.h drm/i915/cnl: Initialize PLLs 2017-06-12 09:42:18 -07:00
intel_drv.h drm/i915: Pass crtc_state to ips toggle functions, v2 2017-11-17 12:14:25 +01:00
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 drm/i915: Eliminate some encoder->crtc usage from DSI code 2017-11-09 20:04:35 +02:00
intel_dsi.h
intel_dvo.c drm/i915: Populate output_types from .get_config() 2017-10-30 19:53:22 +02:00
intel_engine_cs.c drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
intel_fbc.c drm/i915: adjust get_crtc_fence_y_offset() to use base.y instead of crtc.y 2017-10-18 17:02:45 +03:00
intel_fbdev.c drm/i915: Replace *_reference/unreference() or *_ref/unref with _get/put() 2017-10-13 16:53:59 +02:00
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: Assert ctch->vma is allocated 2017-11-06 13:57:37 +00:00
intel_guc_ct.h drm/i915/guc: Introduce buffer based cmd transport 2017-05-26 13:26:53 +01:00
intel_guc_fw.c drm/i915/guc: Simplify programming of GUC_SHIM_CONTROL 2017-11-08 21:34:19 +00:00
intel_guc_fw.h drm/i915/guc: Rename intel_guc_loader.c to intel_guc_fw.c 2017-10-16 18:53:25 +03:00
intel_guc_fwif.h drm/i915/guc: Add support for reset engine using GuC commands 2017-11-02 08:42:11 +00:00
intel_guc_log.c drm/i915: Unify uC variable types to avoid flooding checkpatch.pl 2017-10-06 14:09:40 +03:00
intel_guc_log.h drm/i915: Unify uC variable types to avoid flooding checkpatch.pl 2017-10-06 14:09:40 +03:00
intel_guc_submission.c drm/i915/selftests: Add a GuC doorbells selftest 2017-11-17 10:02:39 +00:00
intel_guc_submission.h drm/i915/guc: Rename i915_guc_submission.c|h to intel_guc_submission.c|h 2017-11-16 15:06:18 +00:00
intel_guc.c drm/i915/guc: Rename i915_guc_submission.c|h to intel_guc_submission.c|h 2017-11-16 15:06:18 +00:00
intel_guc.h drm/i915/guc: Rename i915_guc_client struct to intel_guc_client 2017-11-16 15:04:17 +00:00
intel_gvt.c drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
intel_gvt.h drm/i915/gvt: Add gvt options sanitize function 2017-05-30 15:59:47 +03:00
intel_hangcheck.c drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
intel_hdmi.c drm/i915/cnl: Extend HDMI 2.0 support to CNL. 2017-11-16 09:45:52 -08:00
intel_hotplug.c drm/i915: Introduce intel_hpd_pin function. 2017-08-11 11:53:47 -07:00
intel_huc.c drm/i915/huc: Use helper function while waiting for DMA completion 2017-10-26 21:35:21 +01:00
intel_huc.h drm/i915/huc: Fix includes in intel_huc.c 2017-10-06 16:01:15 +01:00
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: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
intel_lrc.h drm/i915: Remove i915.enable_execlists module parameter 2017-11-20 21:53:59 +00:00
intel_lspcon.c drm/i915: Add retries for LSPCON detection 2017-10-13 12:15:10 +03:00
intel_lvds.c drm/i915: Populate output_types from .get_config() 2017-10-30 19:53:22 +02:00
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 2017-09-26 09:14:20 -07:00
intel_opregion.c drm/i915: Nuke intel_ddi_get_encoder_port() 2017-10-30 19:55:18 +02:00
intel_overlay.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
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: Nuke intel_digital_port->port 2017-11-09 20:06:14 +02:00
intel_pm.c Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk" 2017-11-17 09:52:14 -08:00
intel_psr.c drm/i915: Nuke intel_digital_port->port 2017-11-09 20:06:14 +02:00
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: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
intel_ringbuffer.h drm/i915: Remove obsolete ringbuffer emission for gen8+ 2017-11-20 21:54:58 +00:00
intel_runtime_pm.c drm/i915: Start tracking voltage level in the cdclk state 2017-10-25 13:40:00 +03:00
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Eliminate some encoder->crtc usage from SDVO code 2017-11-09 20:04:47 +02:00
intel_sideband.c drm/i915: Move rps.hw_lock to dev_priv and s/hw_lock/pcu_lock 2017-10-11 08:56:56 +01:00
intel_sprite.c drm/i915/glk: Refactor handling of PLANE_COLOR_CTL for GLK+ 2017-11-14 15:43:52 +02:00
intel_tv.c drm/i915: Eliminate some encoder->crtc usage from TV code 2017-11-09 20:04:56 +02:00
intel_uc_fw.c drm/i915: Add Guc/HuC firmware details to error state 2017-11-06 14:22:06 +00:00
intel_uc_fw.h drm/i915: Add Guc/HuC firmware details to error state 2017-11-06 14:22:06 +00:00
intel_uc.c drm/i915/guc: Rename i915_guc_submission.c|h to intel_guc_submission.c|h 2017-11-16 15:06:18 +00:00
intel_uc.h drm/i915/guc: Move GuC core definitions into dedicated files 2017-10-06 09:37:20 +03:00
intel_uncore.c drm/i915: Re-register PMIC bus access notifier on runtime resume 2017-11-15 09:55:12 +01:00
intel_uncore.h drm/i915: Re-register PMIC bus access notifier on runtime resume 2017-11-15 09:55:12 +01:00
intel_vbt_defs.h drm/i915: Parse max HDMI TMDS clock from VBT 2017-10-30 19:48:11 +02:00
Kconfig drm/i915/fence: Avoid del_timer_sync() from inside a timer 2017-09-19 13:06:21 +01:00
Kconfig.debug drm/i915: Use trace_printk to provide a death rattle for GEM 2017-11-09 21:39:18 +00:00
Makefile drm/i915/guc: Rename i915_guc_submission.c|h to intel_guc_submission.c|h 2017-11-16 15:06:18 +00:00