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OpenCloudOS-Kernel/drivers/gpu/drm/i915
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Robert Bragg 26ebd9c734 drm/i915/perf: avoid poll, read, EAGAIN busy loops 
If the function for checking whether there is OA buffer data available
(during a poll or blocking read) has false positives then we want to
avoid a situation where the subsequent read() returns EAGAIN (after
a more accurate check) followed by a poll() immediately reporting
the same false positive POLLIN event and effectively maintaining a
busy loop until there really is data.

This makes sure that we clear the .pollin event status whenever we
return EAGAIN to userspace which will throttle subsequent POLLIN events
and repeated attempts to read to the 5ms intervals of the hrtimer
callback we have.

Signed-off-by: Robert Bragg <robert@sixbynine.org>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170511154345.962-3-lionel.g.landwerlin@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
 		2017-05-13 10:59:07 +01:00
..
gvt drm/i915: Use engine->context_pin() to report the intel_ring 2017-05-04 11:54:43 +01:00
selftests drm/i915: Use engine->context_pin() to report the intel_ring 2017-05-04 11:54:43 +01:00
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 drm/i915/tracepoints: Add request submit and execute tracepoints 2017-02-21 13:18:14 +00:00
Makefile drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
dvo.h
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dvo_ch7xxx.c
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dvo_ch7017.c drm/i915/lvds: Remove magic from PLL programming 2017-05-10 13:47:55 +03:00
dvo_ivch.c
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dvo_ns2501.c
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dvo_sil164.c
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dvo_tfp410.c
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i915_cmd_parser.c drm/i915: Rename intel_engine_cs.exec_id to uabi_id 2017-04-11 14:31:39 +01:00
i915_debugfs.c drm/i915/guc: Dump the GuC stage descriptor pool in debugfs 2017-05-11 12:26:50 +03:00
i915_drv.c drm/i915: Do not leak dev_priv->l3_parity.remap_info[] 2017-05-02 12:09:13 +03:00
i915_drv.h drm/i915: Support variable cursor height on ivb+ 2017-05-10 19:28:34 +03:00
i915_gem.c drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
i915_gem.h drm/i915: Squash repeated awaits on the same fence 2017-05-03 11:08:48 +01:00
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
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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: Sanitize engine context sizes 2017-04-28 12:11:59 +03:00
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 drm/i915: Copy user requested buffers into the error state 2017-04-15 12:39:57 +01:00
i915_gem_fence_reg.c drm/i915: Take rpm wakelock for releasing the fence on unbind 2017-03-06 14:38:18 +00:00
i915_gem_fence_reg.h drm/i915: Replace 4096 with PAGE_SIZE or I915_GTT_PAGE_SIZE 2017-01-10 20:54:32 +00:00
i915_gem_gtt.c drm/i915: don't do allocate_va_range again on PIN_UPDATE 2017-05-12 13:37:25 +01:00
i915_gem_gtt.h drm/i915: Avoid using word legacy with ppgtt 2017-03-03 16:46:23 +02:00
i915_gem_internal.c Linux 4.10-rc8 2017-02-23 12:10:12 +10:00
i915_gem_object.h drm/i915: Use pagecache write to prepopulate shmemfs from pwrite-ioctl 2017-03-09 10:46:07 +02:00
i915_gem_render_state.c scripts/spelling.txt: add "aligment" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
i915_gem_render_state.h
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i915_gem_request.c drm/i915: Use engine->context_pin() to report the intel_ring 2017-05-04 11:54:43 +01:00
i915_gem_request.h drm/i915: Copy user requested buffers into the error state 2017-04-15 12:39:57 +01:00
i915_gem_shrinker.c drm/i915: Do not sync RCU during shrinking 2017-05-11 15:58:23 +03:00
i915_gem_stolen.c drm/i915/gvt: Disable access to stolen memory as a guest 2017-02-16 11:59:13 +02:00
i915_gem_tiling.c drm/i915: Prevent concurrent tiling/framebuffer modifications 2017-03-01 17:57:17 +00:00
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/i915/userptr: Reinvent GGTT self-faulting protection 2017-03-16 10:21:25 +00:00
i915_gpu_error.c drm/i915: Capture CCID on ILK 2017-04-28 12:11:59 +03:00
i915_guc_reg.h drm/i915/huc: Add HuC fw loading support 2017-01-19 11:18:55 +02:00
i915_guc_submission.c drm/i915: Sanitize engine context sizes 2017-04-28 12:11:59 +03:00
i915_ioc32.c
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i915_irq.c drm/i915: Stop pretending to mask/unmask LPE audio interrupts 2017-05-03 16:19:21 +03:00
i915_memcpy.c
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i915_mm.c
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i915_oa_hsw.c
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i915_oa_hsw.h
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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: Eliminate HAS_HW_CONTEXTS 2017-04-28 12:11:59 +03:00
i915_perf.c drm/i915/perf: avoid poll, read, EAGAIN busy loops 2017-05-13 10:59:07 +01:00
i915_pvinfo.h
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i915_reg.h drm/i915: Support variable cursor height on ivb+ 2017-05-10 19:28:34 +03:00
i915_selftest.h drm/i915: Use fault-injection to force the shrinker to run in live GTT tests 2017-02-13 20:46:32 +00:00
i915_suspend.c
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i915_sw_fence.c gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level> 2017-03-01 09:44:11 +01:00
i915_sw_fence.h
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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.h drm/i915: Add g4x watermark tracepoint 2017-05-10 16:48:32 +03:00
i915_trace_points.c
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i915_utils.h drm/i915: Move uncore definitions into a separate header 2017-05-09 16:02:47 +03:00
i915_vgpu.c drm/i915: Fix vGPU balloon for ggtt guard page 2017-03-17 09:41:27 +00:00
i915_vgpu.h
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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 drm/i915: Exercise i915_vma_pin/i915_vma_insert 2017-02-13 20:46:41 +00:00
intel_acpi.c
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intel_atomic.c drm/i915: Skip useless watermark/FIFO related work on VLV/CHV when not needed 2017-03-03 16:50:10 +02:00
intel_atomic_plane.c drm/i915: Remove vma unpin in intel_plane_destroy 2017-05-11 11:30:27 +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 drm/i915/dsi: Fix swapping of MIPI_SEQ_DEASSERT_RESET / MIPI_SEQ_ASSERT_RESET 2016-12-20 16:28:25 +02:00
intel_breadcrumbs.c drm/i915: Apply a cond_resched() to the saturated signaler 2017-04-26 16:27:58 +03:00
intel_cdclk.c drm/i915: Fix rawclk readout for g4x 2017-05-05 19:49:47 +03:00
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: make a few DDI functions static 2017-03-31 11:32:41 -03:00
intel_device_info.c drm/i915: Add support for sprites on g4x 2017-05-10 16:48:32 +03:00
intel_display.c drm/i915: Fix hw state verifier access to crtc->state. 2017-05-11 11:29:58 +02:00
intel_dp.c drm/i915/dp: Check error return during DPCD capability queries 2017-05-10 13:47:40 +03:00
intel_dp_aux_backlight.c drm/i915: Restore brightness level in aux backlight driver 2017-05-12 15:51:20 +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 drm/i915: Convert intel_dp_mst connector properties to atomic. 2017-04-12 10:53:22 +02:00
intel_dpio_phy.c
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intel_dpll_mgr.c Linux 4.10-rc8 2017-02-23 12:10:12 +10:00
intel_dpll_mgr.h drm/i915: Remove unused function intel_ddi_get_link_dpll() 2017-02-10 11:40:27 +02:00
intel_drv.h drm/i915: Clean up cursor junk from intel_crtc 2017-05-10 19:03:00 +03:00
intel_dsi.c drm/i915/glk: Fix DSI "*ERROR* ULPS is still active" messages 2017-04-28 17:09:06 +03:00
intel_dsi.h drm/i915/dsi: arrange intel_dsi.h according to relevant files 2017-03-07 15:18:43 +02:00
intel_dsi_dcs_backlight.c
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intel_dsi_pll.c drm/i915/glk: Validate only DSI PORT A PLL divider 2017-02-28 11:54:52 +02:00
intel_dsi_vbt.c drm/i915/dsi: rename intel_dsi_panel_vbt.c to intel_dsi_vbt.c 2017-03-07 15:18:24 +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: Use engine->context_pin() to report the intel_ring 2017-05-04 11:54:43 +01:00
intel_fbc.c drm/i915: Use new atomic iterator macros in fbc 2017-03-13 12:06:40 +01:00
intel_fbdev.c drm/i915/fbdev: Stop repeating tile configuration on stagnation 2017-03-09 10:43:17 +02:00
intel_fifo_underrun.c drm/i915: Add FIFO underrun tracepoints 2017-03-03 16:50:11 +02:00
intel_frontbuffer.c drm/i915: Remove 'retire' parameter from intel_fb_obj_flush 2017-02-22 12:12:17 +00:00
intel_frontbuffer.h drm/i915: Remove 'retire' parameter from intel_fb_obj_flush 2017-02-22 12:12:17 +00:00
intel_guc_fwif.h drm/i915/guc: Use GUC prefix for CORE_FAMILY definitions 2017-04-05 10:06:38 +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: Turn on KBL platform support. 2017-03-29 15:28:51 +08:00
intel_gvt.h
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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/glk: Don't allow 12 bpc when htotal is too big 2017-04-26 19:03:36 +03:00
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/guc: write wopcm related register once during uc init 2017-04-13 14:01:01 +03:00
intel_i2c.c drm/i915: Introduce IS_GEN9_BC for Skylake and Kabylake. 2017-01-24 10:29:00 -08:00
intel_lpe_audio.c ALSA: x86: Register multiple PCM devices for the LPE audio card 2017-05-03 16:24:00 +03:00
intel_lrc.c drm/i915: set initialised only when init_context callback is NULL 2017-05-12 11:11:11 +01:00
intel_lrc.h drm/i915: Sanitize engine context sizes 2017-04-28 12:11:59 +03:00
intel_lspcon.c drm/i915/lspcon: Fix resume time initialization due to unasserted HPD 2017-02-16 11:59:10 +02:00
intel_lvds.c drm/i915: Store encoder power domain in struct intel_encoder 2017-02-27 09:07:51 +02:00
intel_mocs.c drm/i915: Emit to ringbuffer directly 2017-02-14 14:30:46 +00:00
intel_mocs.h
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intel_modes.c
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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: Check error return when converting pipe to connector 2017-05-10 13:47:49 +03:00
intel_pipe_crc.c drm/i915: use memdup_user_nul 2017-05-08 09:28:39 +02:00
intel_pm.c drm/i915: Add g4x watermark tracepoint 2017-05-10 16:48:32 +03:00
intel_psr.c drm/i915/psr: Fix compiler warnings for hsw_psr_disable() 2017-01-18 10:25:01 +00:00
intel_renderstate.h
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intel_renderstate_gen6.c
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intel_renderstate_gen7.c
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intel_renderstate_gen8.c
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intel_renderstate_gen9.c
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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: Micro-optimise hotpath through intel_ring_begin() 2017-05-04 15:40:38 +01:00
intel_runtime_pm.c drm/i915: WARN if the core runtime PM get helpers fail 2017-03-28 16:02:10 +03:00
intel_sdvo.c drm/i915/sdvo: Check error return from intel_sdvo_get_value() 2017-05-10 13:47:43 +03:00
intel_sdvo_regs.h
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intel_sideband.c drm/i915: Distinguish between timeout and error in sideband transactions 2017-02-27 17:22:19 +00:00
intel_sprite.c drm/i915: Pass intel_plane and intel_crtc to plane hooks 2017-05-10 18:59:36 +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: Make scratch register base and count flexible 2017-05-11 12:49:26 +03:00
intel_uc.h drm/i915/guc: Make scratch register base and count flexible 2017-05-11 12:49:26 +03:00
intel_uncore.c drm/i915: Fix __intel_wait_for_register_fw to not sleep in atomic 2017-05-10 20:06:41 +02:00
intel_uncore.h drm/i915: Move uncore definitions into a separate header 2017-05-09 16:02:47 +03:00
intel_vbt_defs.h drm/915: Parsing the missed out DTD fields from the VBT 2016-12-23 15:13:39 +02:00