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6b567085c1
linux/drivers/gpu/drm/i915
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Chris Wilson 6b567085c1 drm/i915: Remove the spin-request during execbuf await_request 
Originally we would enable and disable the breadcrumb interrupt
immediately on demand. This was slow enough to have a large impact
(>30%) on tasks that hopped between engines. However, by using a shadow
to keep the irq alive for an extra interrupt (see commit 67b807a892
("drm/i915: Delay disabling the user interrupt for breadcrumbs")) and
by recently reducing the cost in adding ourselves to the signal tree, we
no longer need to spin-request during await_request to avoid delays in
throughput tests. Without the earlier patches to stop the wakeup when
signaling if the irq was already active, we saw no improvement in
execbuf overhead (and corresponding contention in other clients) despite
the removal of the spinner in a simple test like glxgears. This means
there will be scenarios where now we spend longer enabling the interrupt
than we would have spent spinning, but these are not likely to have as
noticeable an impact as the high frequency test cases (where there
should not be any regression).

Ulterior motive: generalising the engine->sync_to to handle different
types of semaphores and non-semaphores.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170608111405.16466-4-chris@chris-wilson.co.uk
2017-06-08 12:33:09 +01:00
..
gvt Linux 4.12-rc3 2017-05-30 15:54:15 +10:00
selftests Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
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: Redefine ptr_pack_bits() and friends 2017-05-17 13:38:04 +01:00
i915_debugfs.c drm/i915: s/fbc_fc/fbc_false_color/ 2017-06-06 19:02:37 +03:00
i915_drv.c drm/i915/cnl: Cannonlake uses CNP PCH. 2017-06-07 07:28:14 -07:00
i915_drv.h drm/i915/cnl: add IS_CNL_REVID macro 2017-06-07 07:28:56 -07:00
i915_gem_batch_pool.c drm/i915: Retire an active batch pool object rather than allocate new 2017-03-17 17:57:20 +00:00
i915_gem_batch_pool.h
i915_gem_clflush.c drm/i915: Mark up clflushes as belonging to an unordered timeline 2017-05-03 11:08:45 +01:00
i915_gem_clflush.h drm/i915: Mark up clflushes as belonging to an unordered timeline 2017-05-03 11:08:45 +01:00
i915_gem_context.c drm/i915: Use a define for the default priority [0] 2017-05-17 13:38:08 +01:00
i915_gem_context.h drm/i915: make context status notifier head be per engine 2017-03-21 16:51:47 +02:00
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: Move retire-requests into i915_gem_wait_for_idle() 2017-03-31 12:03:46 +01:00
i915_gem_execbuffer.c Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
i915_gem_fence_reg.c
i915_gem_fence_reg.h
i915_gem_gtt.c drm/i915/guc: Assert that we switch between known ggtt->invalidate functions 2017-06-01 14:17:41 +01:00
i915_gem_gtt.h drm/i915: return the correct usable aperture size under gvt environment 2017-06-02 14:28:46 +01:00
i915_gem_internal.c
i915_gem_object.h drm/i915: Add kerneldoc to describe i915_gem_object.vma_list 2017-05-30 11:46:23 +01:00
i915_gem_render_state.c
i915_gem_render_state.h
i915_gem_request.c drm/i915: Remove the spin-request during execbuf await_request 2017-06-08 12:33:09 +01:00
i915_gem_request.h Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
i915_gem_shrinker.c drm/i915: Allow kswapd to pause the device whilst reaping 2017-06-02 14:54:27 +01:00
i915_gem_stolen.c drm/i915: Consolidate #ifdef CONFIG_INTEL_IOMMU 2017-05-25 21:51:49 +01:00
i915_gem_tiling.c drm/i915: Fix logical inversion for gen4 quirking 2017-06-01 14:27:44 +01:00
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 drm: drop drm_[cm]alloc* helpers 2017-05-18 17:22:39 +02:00
i915_gem.c drm/i915: return the correct usable aperture size under gvt environment 2017-06-02 14:28:46 +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: Pack the count into the low bits of the port.request 2017-05-17 13:38:06 +01:00
i915_guc_reg.h
i915_guc_submission.c drm/i915/guc: Fix doorbell id selection 2017-05-31 10:34:03 +03:00
i915_ioc32.c
i915_irq.c drm/i915/cnp: Introduce Cannonpoint PCH. 2017-06-02 13:56:19 -07:00
i915_memcpy.c
i915_mm.c
i915_oa_hsw.c
i915_oa_hsw.h
i915_params.c drm/i915/uc: Add params for specifying firmware 2017-03-15 14:26:30 +02:00
i915_params.h drm/i915/uc: Add params for specifying firmware 2017-03-15 14:26:30 +02:00
i915_pci.c drm/i915: Unify GT* and GT3 definitions 2017-06-07 07:52:02 -07:00
i915_perf.c drm/i915/perf: rate limit spurious oa report notice 2017-05-13 11:03:43 +01:00
i915_pvinfo.h
i915_reg.h drm/i915: Remove unnecessary PORT3 definition. 2017-06-07 07:50:05 -07:00
i915_selftest.h
i915_suspend.c
i915_sw_fence.c drm/i915: Import the kfence selftests for i915_sw_fence 2017-05-17 13:38:02 +01:00
i915_sw_fence.h drm/i915: Remove kref from i915_sw_fence 2017-05-17 13:38:01 +01:00
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: Do not leak dev_priv->l3_parity.remap_info[] 2017-05-02 12:09:13 +03:00
i915_trace_points.c
i915_trace.h drm/i915: Add g4x watermark tracepoint 2017-05-10 16:48:32 +03:00
i915_utils.h drm/i915: Split execlist priority queue into rbtree + linked list 2017-05-17 13:38:09 +01:00
i915_vgpu.c drm/i915: return the correct usable aperture size under gvt environment 2017-06-02 14:28:46 +01:00
i915_vgpu.h
i915_vma.c drm/i915: Remove the vma from the drm_mm if binding fails 2017-03-09 10:43:55 +02:00
i915_vma.h
intel_acpi.c
intel_atomic_plane.c Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
intel_atomic.c drm/i915: Convert intel_sdvo connector properties to atomic. 2017-05-30 10:33:28 +02:00
intel_audio.c drm/i915: Reorganize intel_lpe_audio_notify() arguments 2017-05-03 16:20:48 +03:00
intel_bios.c drm/i915/vbt: split out defaults that are set when there is no VBT 2017-03-14 10:49:13 +02:00
intel_bios.h
intel_breadcrumbs.c drm/i915: Skip adding the request to the signal tree is complete 2017-06-08 12:33:08 +01:00
intel_cdclk.c drm/i915/cnp: Get/set proper Raw clock frequency on CNP. 2017-06-02 13:57:21 -07:00
intel_color.c drm/i915/glk: Improve rounding caused by pre-CSC gamma tables 2017-03-14 16:07:00 +02:00
intel_crt.c drm/i915: Convert intel_crt connector properties to atomic. 2017-04-12 10:53:22 +02:00
intel_csr.c drm/i915: update the firmware download URL 2017-03-28 11:17:37 +03:00
intel_ddi.c drm/i915/ddi: Avoid long delays during system suspend / eDP disabling 2017-06-01 15:07:22 +03:00
intel_device_info.c drm/i915/cnl: Configure EU slice power gating. 2017-06-07 07:29:42 -07:00
intel_display.c drm/i915: Move the unclaimed mmio detection into the powerwell for KMS 2017-06-08 09:27:17 +01:00
intel_dp_aux_backlight.c drm/i915: Drop AUX backlight enable check for backlight control 2017-05-26 15:02:14 +03:00
intel_dp_link_training.c drm/i915: Implement Link Rate fallback on Link training failure 2017-04-13 21:57:37 +03:00
intel_dp_mst.c Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
intel_dp.c drm/i915/cnp: Panel Power sequence changes for CNP PCH. 2017-06-02 13:59:41 -07:00
intel_dpio_phy.c
intel_dpll_mgr.c
intel_dpll_mgr.h
intel_drv.h drm/i915/skl+: consider max supported plane pixel rate while scaling 2017-06-01 09:48:19 +02:00
intel_dsi_dcs_backlight.c
intel_dsi_pll.c
intel_dsi_vbt.c drm/i915/glk: Calculate high/low switch count for GLK 2017-05-15 18:29:46 +03:00
intel_dsi.c drm/i915: Convert DSI connector properties to atomic. 2017-05-30 10:33:25 +02:00
intel_dsi.h drm/i915/dsi: arrange intel_dsi.h according to relevant files 2017-03-07 15:18:43 +02:00
intel_dvo.c drm/i915: Convert intel DVO connector to atomic 2017-04-12 10:53:29 +02:00
intel_engine_cs.c drm/i915: Check the ring is empty when declaring the engines are idle 2017-06-01 14:22:16 +01:00
intel_fbc.c drm/i915: Fix 90/270 rotated coordinates for FBC 2017-06-06 19:31:28 +03:00
intel_fbdev.c drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to UAPI 2017-05-22 09:49:48 +02:00
intel_fifo_underrun.c
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: Introduce buffer based cmd transport 2017-05-26 13:26:53 +01:00
intel_guc_loader.c drm/i915/guc: write wopcm related register once during uc init 2017-04-13 14:01:01 +03:00
intel_guc_log.c drm/i915: Treat WC a separate cache domain 2017-04-12 12:35:17 +01:00
intel_gvt.c drm/i915/gvt: Return -EIO if host GuC submission is enabled when loading GVT-g 2017-05-30 16:00:07 +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: Avoid format string expansion from engine names 2017-04-19 15:49:27 +03:00
intel_hdmi.c drm/i915/cnp: add CNP gmbus support 2017-06-02 13:59:32 -07:00
intel_hotplug.c drm/atomic: Acquire connection_mutex lock in drm_helper_probe_single_connector_modes, v4. 2017-04-06 21:29:23 +02:00
intel_huc.c drm/i915/huc: Update GLK HuC version 2017-05-22 09:50:03 +03:00
intel_i2c.c drm/i915/cnp: add CNP gmbus support 2017-06-02 13:59:32 -07:00
intel_lpe_audio.c drm/i915: Fix runtime PM for LPE audio 2017-05-15 14:44:11 +03:00
intel_lrc.c drm/i915/gen10: Set value of Indirect Context Offset for gen10 2017-06-07 07:29:58 -07:00
intel_lrc.h drm/i915: Sanitize engine context sizes 2017-04-28 12:11:59 +03:00
intel_lspcon.c
intel_lvds.c drm/i915: Convert LVDS connector properties to atomic. 2017-05-30 10:33:25 +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
intel_opregion.c drm/i915/opregion: debug log about invalid ACPI OpRegion VBT 2017-03-30 09:12:36 +03:00
intel_overlay.c drm/i915: Remove superfluous i915_add_request_no_flush() helper 2017-03-17 13:03:25 +00:00
intel_panel.c drm/i915/cnp: Backlight support for CNP. 2017-06-02 13:58:02 -07:00
intel_pipe_crc.c drm/i915: use memdup_user_nul 2017-05-08 09:28:39 +02:00
intel_pm.c drm/i915: Fix SKL+ watermarks for 90/270 rotation 2017-06-06 19:29:30 +03:00
intel_psr.c drm/i915/psr: disable psr2 for resolution greater than 32X20 2017-05-30 10:11:41 -07:00
intel_renderstate_gen6.c
intel_renderstate_gen7.c
intel_renderstate_gen8.c
intel_renderstate_gen9.c
intel_renderstate.h
intel_ringbuffer.c drm/i915: Micro-optimise hotpath through intel_ring_begin() 2017-05-04 15:40:38 +01:00
intel_ringbuffer.h drm/i915: Split execlist priority queue into rbtree + linked list 2017-05-17 13:38:09 +01:00
intel_runtime_pm.c drm/i915/cnl: Also need power well sanitize. 2017-06-07 07:30:45 -07:00
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Convert intel_sdvo connector properties to atomic. 2017-05-30 10:33:28 +02:00
intel_sideband.c
intel_sprite.c drm/i915: Workaround VLV/CHV DSI scanline counter hardware fail 2017-06-06 17:58:42 +03:00
intel_tv.c drm/i915: Convert intel_tv connector properties to atomic, v5. 2017-04-12 10:53:22 +02:00
intel_uc.c drm/i915/guc: Clear enable_guc_loading in case of init failure 2017-06-08 12:21:19 +03:00
intel_uc.h drm/i915/guc: capture GuC logs if FW fails to load 2017-05-26 13:59:56 +01:00
intel_uncore.c drm/i915: Remove decoupled MMIO code 2017-05-30 09:59:41 +03:00
intel_uncore.h drm/i915: Keep the forcewake timer alive for 1ms past the most recent use 2017-05-26 15:58:21 +01:00
intel_vbt_defs.h
Kconfig Merge tag 'topic/designware-baytrail-2017-03-02' of git://anongit.freedesktop.org/git/drm-intel into drm-intel-next-queued 2017-03-13 09:26:06 +01:00
Kconfig.debug Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-next 2017-05-30 15:25:28 +10:00
Makefile drm/i915/guc: Introduce buffer based cmd transport 2017-05-26 13:26:53 +01:00